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Richard Vedvik
Приєднався 16 жов 2011
Videos for enthusiasts of Car Audio (including wiring, electronics, acoustics, and sound quality), Electronics (including wiring and generators), and the Outdoors (including BWCAW). You can email me with any specific questions or needs.
Acoustical Engineer Explains - Speaker Adapters - Sound Quality - Episode 6 - 2023 SS Camaro
This video series details my efforts to construct acoustically dead speaker adapters in my 2023 SS Camaro, but applies to any vehicle. My methods and approach is from decades of installations combined with my professional career as an acoustical engineer making buildings quieter and sound better.
I describe automotive noise abatement treatment installation as strategically placing materials like sound-absorbing insulation or noise barriers in vehicle interiors to absorb or block noise. This reduces engine, road noise, tire noise, and wind noise; enhancing passenger comfort and audio clarity. Installation locations are chosen based on noise source proximity and material effectiveness, ensuring a quieter driving experience without compromising vehicle weight or performance.
A variety of materials will be used in this series, but the primary product manufacturer is resonixsoundsolutions.com/ . You can utilize this website for education as well as products. I've been friends with Nick for a long time and I know his intent is a quality product that performs well.
I describe automotive noise abatement treatment installation as strategically placing materials like sound-absorbing insulation or noise barriers in vehicle interiors to absorb or block noise. This reduces engine, road noise, tire noise, and wind noise; enhancing passenger comfort and audio clarity. Installation locations are chosen based on noise source proximity and material effectiveness, ensuring a quieter driving experience without compromising vehicle weight or performance.
A variety of materials will be used in this series, but the primary product manufacturer is resonixsoundsolutions.com/ . You can utilize this website for education as well as products. I've been friends with Nick for a long time and I know his intent is a quality product that performs well.
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Відео
Acoustical Engineer Explains - Door Noise Barriers - Quieting Cars - Episode 5 - 2023 SS Camaro
Переглядів 2276 місяців тому
This video series details my efforts to reduce unwanted noise and vibrations in my 2023 SS Camaro, but applies to any vehicle. My methods and approach is from decades of installations combined with my professional career as an acoustical engineer making buildings quieter. I describe automotive noise abatement treatment installation as strategically placing materials like sound-absorbing insulat...
Acoustical Engineer Explains - Deadening Doors - Making Cars Quiet - Episode 4 - 2023 SS Camaro
Переглядів 3056 місяців тому
This video series details my efforts to reduce unwanted noise and vibrations in my 2023 SS Camaro, but applies to any vehicle. My methods and approach is from decades of installations combined with my professional career as an acoustical engineer making buildings quieter. I describe automotive noise abatement treatment installation as strategically placing materials like sound-absorbing insulat...
Acoustical Engineer Explains - Door Sound Absorption - Quieting Cars - Episode 3 - 2023 SS Camaro
Переглядів 2196 місяців тому
This video series details my efforts to reduce unwanted noise and vibrations in my 2023 SS Camaro, but applies to any vehicle. My methods and approach is from decades of installations combined with my professional career as an acoustical engineer making buildings quieter. I describe automotive noise abatement treatment installation as strategically placing materials like sound-absorbing insulat...
Acoustical Engineer Explains - Deadening Doors - Making Cars Quiet - Episode 2 - 2023 SS Camaro
Переглядів 2976 місяців тому
This video series details my efforts to reduce unwanted noise and vibrations in my 2023 SS Camaro, but applies to any vehicle. My methods and approach is from decades of installations combined with my professional career as an acoustical engineer making buildings quieter. I describe automotive noise abatement treatment installation as strategically placing materials like sound-absorbing insulat...
Acoustical Engineer Explains - Sound Absorption - Making Cars Quiet - 2023 SS Camaro
Переглядів 4086 місяців тому
This video series details my efforts to reduce unwanted noise and vibrations in my 2023 SS Camaro, but applies to any vehicle. My methods and approach is from decades of installations combined with my professional career as an acoustical engineer making buildings quieter. I describe automotive noise abatement treatment installation as strategically placing materials like sound-absorbing insulat...
Part 2 - Electrical Engineer Explains - Modifying My Generator For Floating vs. Bonding Neutral!
Переглядів 5 тис.10 місяців тому
This video is a follow-up to my recent video explaining that showed how I modified my portable generator to switch between bonded neutral and floating neutral. This video explains WHY I made the modification and HOW I am implementing it into my home. Part 1: ua-cam.com/video/swYrC_MHSW8/v-deo.html If you'd like more information on why I did this modification, please refer to my previous video d...
Electrical Engineer Explains: Portable Generator Bonded vs Floating - How I modified my generator!
Переглядів 19 тис.10 місяців тому
This video is an explanation of how I modified my portable generator to switch between bonded neutral and floating neutral. If you'd like more information on why I did this modification, please refer to my previous video discussing the concerns with connecting a bonded neutral generator to your home: ua-cam.com/video/Nrnforx1uFI/v-deo.htmlsi=ta-N5D4y8f6eVtXS I made a Part 2 where I explain how ...
4K - 2014 Honda Accord with 210k miles - valve cover removal. Has Mobil 1 0W-20 prevented sludge?
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Instructions on replacing the valve cover on a 9th Generation Honda Accord Sport with the 2.4L in-line 4 cylinder engine with 210,000 miles. I am the original owner and have used Mobil 1 0W-20 at all necessary intervals. This is the first time I have removed the valve cover. Also discuss measuring valve clearances and cleaning procedures. The polished areas on the lobes are expected. While thos...
4K 2022 BWCAW EP16 Agnes/Oyster/LacLaCroix Trip - Did we find the best campsite in the BWCA?
Переглядів 4072 роки тому
This is the 4K Version for those with higher bandwidth connections. Photos are at 4K resolution, video is HD. In August 2022 we embarked on our longest BWCAW journey to date. 40 miles traveled with two amazing campsites. This video includes video reviews of four campsites with half of this video dedicated to what is likely the best campsite in the BWCAW. This video focuses on the campsites with...
2022 BWCAW EP16 Agnes/Oyster/LacLaCroix Trip - Did we find the best campsite in the BWCA?
Переглядів 1,6 тис.2 роки тому
In August 2022 we embarked on our longest BWCAW journey to date. 40 miles traveled with two amazing campsites. This video includes video reviews of four campsites with half of this video dedicated to what is likely the best campsite in the BWCAW. This video focuses on the campsites with both videos and photo slideshows with voice-overs. Table of Contents 0:20 Intro and Entry Summary 1:54 Oyster...
2022 BWCAW - Pack Essentials - Cooking Systems & Water Filtration - What I'm bringing and why.
Переглядів 5112 роки тому
As I prepare for our 2022 Boundary Waters Canoe Area Wilderness (BWCAW) trip from EP16 to Lac LaCroix, I was sorting cooking systems and water filtration systems and wanted to share my thoughts and experience with the various types of filtration and cooking.
2021 BWCAW - EP #1 - Trout Lake
Переглядів 1,7 тис.2 роки тому
This video documents the highlights of our August 2021 trip to Little Trout Lake which was north of Trout Lake.
Electrical Engineer Explains - Generator Neutral-Ground Bonding
Переглядів 43 тис.2 роки тому
What to do when you want to connect your generator to your home panel through a back-fed circuit breaker. Discussion on neutral-ground bonding with diagrams and details of neutral current and fault current paths.
2021 BWCA Planning - Fishing Rods & Reels
Переглядів 4703 роки тому
I discuss the fishing reels and rods that I will select for my August 2021 trip to Trout Lake in the BWCAW. I explain why I'm making the selections I am. I discuss ultra-light, light, light-medium, and medium pole selections. I discuss 20mm, 25mm, 35mm, and 40mm reels. I discuss line test and strength selections. Let me know what has worked well for you in the Boundary Waters.
Preparing Your Pack - The Essentials in 2021
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Preparing Your Pack - The Essentials in 2021
Electrical Engineer explains connecting generators to your home
Переглядів 147 тис.3 роки тому
Electrical Engineer explains connecting generators to your home
Healthcare Engineer Explains Fitting a 3D Printed Montana Mask for COVID 19
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Healthcare Engineer Explains Fitting a 3D Printed Montana Mask for COVID 19
Electrical Engineer Load Testing Ultracapacitors - The Case For Balancing Circuits
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Electrical Engineer Load Testing Ultracapacitors - The Case For Balancing Circuits
Zapco ST-6X DSP Amplifier Review - Spoiler - NO INPUT GAIN!?!?
Переглядів 8 тис.5 років тому
Zapco ST-6X DSP Amplifier Review - Spoiler - NO INPUT GAIN!?!?
How To Test Your Home Theater Subwoofer
Переглядів 12 тис.5 років тому
How To Test Your Home Theater Subwoofer
2019 BWCA - Second Trip - Lower Basswood Falls Campsite
Переглядів 5 тис.5 років тому
2019 BWCA - Second Trip - Lower Basswood Falls Campsite
BWCA Lower Basswood Falls Sights and Sounds
Переглядів 1,4 тис.5 років тому
BWCA Lower Basswood Falls Sights and Sounds
JL Audio VX10005i Tun fixing Honda Accord Radio Frequency Response
Переглядів 15 тис.6 років тому
JL Audio VX10005i Tun fixing Honda Accord Radio Frequency Response
Instructable! Using an RTA to measure frequency response and as an Oscilloscope
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Instructable! Using an RTA to measure frequency response and as an Oscilloscope
Use an RTA to measure clipping, frequency response, and more! Example: Xtrons head unit
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Use an RTA to measure clipping, frequency response, and more! Example: Xtrons head unit
Electrical engineer explains ultracapacitor Safety Tips and Tricks - Car Audio Applications
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Electrical engineer explains ultracapacitor Safety Tips and Tricks - Car Audio Applications
REVIEW - Klein Tools -Tradesman Pro Ultimate Electricans Bag
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REVIEW - Klein Tools -Tradesman Pro Ultimate Electricans Bag
I’m more confused now on what the best setup is for home use. I’m fortunate to have close friends who are Master Electricians. All of which have said I’m over complicating this subject. My Genmax 7500 is a bonded neutral generator, I’m installing a 50 amp outlet at the main with an interlock, literally every electrician I have talked to about this says to plug it in and run it as is. Why is this such a hot topic on UA-cam but guys in field tell me to stop worrying about it??
So, my understanding is that if your transfer switch switches both neutral and hot, you would keep the bond on your generator, correct? If so, and you are using a simple interlock device where the neutral is not cut, what happens if the power outage results in the loss of neutral from the transformer to your home and you have an unbonded generator? In that situation, would you essentially be in the same scenario identical to a transfer switch that switches neutral as well? And if so, would that be a bad thing to have your generator unbonded?
@Ryan96se the circuit breakers interlock will never switch neutral, only a transfer switch can do that. So the scenario you present cannot occur.
@@richardvedvik979 I guess what I am trying to say is, suppose a tree falls and takes the entire line down from the pole to your house. You are completely off grid. Both hots and the center tap (neutral) from the transformer are laying on the ground. If your generator is unbonded and tied to the bonded neutral in your main panel that is now going to the neutral laying on the ground, where is your ground then? Does a ground fault circle back from the main panel to the source (generator head center tap)? When does the ground rod next to your home come into play?
If you have a floating neutral transfer switch then a floating neutral generator setup but if you have a switched neutral transfer switch then you need the bonded generator setup, correct?
Is there a neutral ground bond in the breaker panel?
@@FlatOutFE Might not be on the same page as I don't believe in this case the neutral/ground bond in service panel is relevant.
@@garywebb9818, if there is a bond in your breaker panel then it definitely matters. Is this in an RV? Home? Was the transfer switch retrofitted before an existing system?
Question ... in one of your diagrams you show the generator receptical ground (green wire) connected to the grounding rode. Is it necessary to do this or can the green wire just connect to the recepticle case like it seems you did ?
Finally, somebody that explains in a more common sense, logical and non electrician terms in how a bonded neutral and floating neutral generator is used. I bet I’ve over 50 videos on this subject in a the past few days and it’s very confusing. Well it was up until now. Thank you !!
@@workharddieproud thanks!
Save time and just put a Neutral Ground Bonding Plug in one of your outlets. Just take it out when you don't need it.😁
A minimalist or someone with a minimal threat of an outage, could buy a pure sine wave 12 volt inverter with sufficient output to run the most important devices. No need to even take it out of the box. Just plan to spend 5 minutes when and if you need it to understand how it works, hook it to your car and stick an extension cord in it. I did this for 5 days, idling my F150 about 50% of the time. I kept the freezer and fridge going, some lights, fan and TV. I'd get the smallest one that will suffice, as they do have an overhead cost. Mine was 700 Watts. I used half a tank of gasoline. Now I've graduated to a large backup system, but I can loan my inverter to a neighbor.
Where do you get Ultratouch now? Unable to find it anywhere.
@@J-my6qj it is definitely harder to find, but it is not impossible. What I had in this video I bought when it was readily available and I always just bought large bags of it because I use so much.
@@richardvedvik979 Do you have any pointers, sir? Homedepot, Lowes and the usual suspects don't have any. There are other places that want to charge an arm and a leg to ship it.
Hello Richard I have been running my generator for 45 years and I away just hook up the two hot legs to my panel as the neutral and ground in the panel always work and if you want a floating neutral you can just disconnect the wire in the plug or outlet. I would like to know your opinion on putting on a exhaust extension Champion says that it may cause a problem with the generator, thanks Bert
@TheViking34482 I've added a car muffler to a gas generator before. The additional back pressure means you have to derate the generator. A 1992 Geo Metro muffler has a 1.5" connection and is fairly cheap.
Hello Richard I have been running my generator for 45 years and I away just hook up the two hot legs to my panel as the neutral and ground in the panel always work and if you want a floating neutral you can just disconnect the wire in the plug or outlet. I would like to know your opinion on putting on a exhaust extension Champion says that it may cause a problem with the generator, thanks Bert
My house has two power legs and a neutral into a meter base from the utility pole. From the meter it goes to the point of first disconnect on the outside of the house. It’s a single 200A main breaker in an Eaton box made for it. My bare copper conductor ground cable from my double ground rod goes into this point of first disconnect to a lug. The outside point of first disconnect neutral bar is case bonded with a supplied screw. From that exterior “main panel” my interior house 200A “sub” panel is fed with aluminum service entry cable…two hots, neutral and ground. This interior panel is NOT bonded and the neutral and grounds are on separate bars in their respective locations. However this interior panel (Square D QO) has a Square D Mechanical Interlock device with a 30A back feed breaker in that position for Generator connection. For connecting a generator I would turn off the outside 200A breaker (point of first disconnect) and also activate the interior interlock to shut off that 200A breaker. All I’ve done is disconnect the hot legs in both breaker flips. Now my neutral and ground are still bonded at the outside panel. If I hook up the Gen to the interior panel as per the interlocked back feed breaker….I still need floating neutral generator…correct?
@@NeilLB7 correct, the generator should be floating as it uses the neutral-ground bond in the main disconnect.
@NeilLB7 excellent description, thank you for the details.
Thank you for the fast response! I try to do things right.
I suppose I forgot to ask another question. Should I use an earth grounding conductor from my residential earth ground rods to my generator ground stud while it’s supplying my panel in a floating neutral setup? My Gen set will be supplying my QO interlocked breaker in the floating neutral scheme described earlier. The cable from my panel to the gen is 8ga four conductor (black white red green if I recall) rated for the 30 amps max. My questions are all for my own actions and risk. My thought is no I should not do that since it’s connected to earth ground via the Gen cable grounding conductor.
@NeilLB7 you should have 2 hots, 1 neutral, and 1 ground from your genset to your panel. The floating neutral generator will use the existing panel's grounding. There is no issue adding a dedicated ground rod at the generator and some codes would require it for larger installations.
Very informative video. Just acquired WEN inverter generator with floating neutral. Main use is to power appliances directly from the generator via extension cords. Based on your video, I should bond the neutral with ground. I acquired a neutral ground bonding plug. However, everywhere I read, it says don’t use such plug with floating neutral generators. Your opinion on what to do, please?
Excellent video. I have a question about the Generlink meter connection. They have a proprietary connector at the device. Most come with a 20' cord. Can you connect an extension cable to these cords safely? For example, the generator connection end is a L14-30 connector. Can you get an L14-30 extension cable to extend the proprietary Generlink cable?
@timr9082 yes, i see no reason why a longer cord would be an issue, just account for voltage drop with long distances and waterproof the connection.
Hey great video I have a question I'm new to the competitive audio scene and upgrading everything in my build currently running a 240 from Autotech a 500 farad super cap battery delete dual run of 0 gauge OFC to the back feeding a 72.5AH SCIB bank of the 2.9AH M5 pedestal cells rated at 75c on a Ruthless 10k and Ruthless 1500.4 I've literally dove in head first trying to learn everything to do with the hobby anyway I just competed for my first time with a single 15" Incriminator audio TYRANT rated for 5K RMS I got a 147.7 but was dropping to the low 15's on burps so I am supposed to be acquiring a 2000 Farad 6S4P bank in the morning and I am wondering if it will be enough to stabilize my voltage on burps and actually see a difference in a competition I can't find many videos on super caps and especially banks that big so I'm wondering if you might be able to help explain it a little and tell me if it's enough for what I'm trying to do also I want to add that I'm wired to 1 ohm currently on the single 15 BUT I have already ordered the second one should be here in a week or two and I will be wired down to 1/2 ohm
You have a lot going on there! There are many types of SPL competition, each one has a different strategy. Is this a trunk build in a Camry?
@richardvedvik979 yes it is and I have acquired the 2000 Farad XS power super cap bank since the last message for burps I found a balancer that I think will work for the 6S4P bank of 24 cells it's on the big Jeff website can you please tell me if it will work for my needs as it sits right now it has some homemade end bars on it connecting the outer cells with the cells in between only connected by the Link bars made for the Caps I'm wondering if the end cells being connected would affect the balancer in any way or if that won't work could I just use 6S LTO balancer one for each row of cells
Roughly how many of these batteries is needed for a 6000W Lanzer amp ? I have a 1000 cca battery in the front with a 200 amp 14V LEECE NEVILLE. On my 1985 suburban will a motorcycle thank you .
Since these are capacitors, and the bank needs to have a voltage rating that is higher than the operating voltage of the system. Since most cars have a 14.4V-15V alternator output, the bank needs to be rated higher than that. By wiring capacitors in series, we add their voltages, which is why I show six (6) 2.7V caps in series for a 16.2V rating.
You need Empirical Labs Arousor to get the audio e on. G'day.
How much would you charge to fill up all of my hollow cavities? I have a Tacoma
@travisjacobson682 This effort is not something I do for many vehicles. I've done it for others when combined with a full build. Disassembling a car to this level should be combined with all other aspects of treatment and wiring. Filling cavities is 1/20th of the effort of getting the car stripped then reinstalled.
Your explanation sounds logical but what's important is that there be a universal protocol that is understood and accepted - like driving full speed through a four way intersection.
@cometcal2 the problem I see is that the industry ignores this issue in residential applications. So there is no universal protocol, other than ignoring the problem.
@@richardvedvik979 Wiring logic is like solving math problems, There may be more than one way to get the correct result but not everyone has good logic.
I don't understand, why a portable generator is considered bonded? There is no connection to the ground, I mean.
Once we connect a generator to our home, we want to avoid adding a second neutral-ground bond. I have other videos describing this problem, as this video was part 2. Part 1 may explain your question.
Don't go cheap on finding an electrician - like a DIY neighbor. If the handyman get's hurt or killed - you're paying out of pocket. The electrician needs to be experienced, licensed, and bonded. They're insured.
Agreed. However, we know that people will seek the internet to DIY, so we want to add as much good information as we can.
Why 4 wires off of switch to two going to motor..thanks
This used both contacts of the switch thereby doubled the rated current the switch can handle.
That is correct. Thanks for replying.
Hi Richard, I have a new Pulsar GD10K generator and was wanting to separate the neutral from the ground except the wiring is way different on mine. When I took off the cover I have an aluminum cooling block and attached to the back is all the main coils and electronics and the wires that go to the control panel. I tried making sense of the schematic but it may as well be in ancient Egyptian. Any advice would be appreciated,or should I call their number and talk to a tech?
@@JamesDursi have you seen my video on breaking a neutral-ground bond? Link to the manual/schematic?
Thanks Richard, you're a huge help, I have questions and will confer with you at a later date. I appreciate your knowledge and willingness to share it with us!
Many people rely on those wago connectors which i feel is a dangerous practice…..yes they are easy to use but you are relying on spring tension (its noticeable how the one wire slipped back out of the wago) and the quality for that said metal inside the wago, actually connecting WIRE to WIRE with a wire nut or some type of mechanical crimp is more reliable and a better bond, why add another variable you dont need……..wagos are great for trouble shooting and removed thats about it in my opinion but your video was great!
Thanks for the comments! I considered crimping but this was a bit of an experiment, so servicing the connection was desired. The Lever-nut by Wago are UL listed for use on 600V AC systems, and have gained a lot of favor with large-scale commercial electricians. They are becoming the preferred solution when installing stranded wire or combining solid and stranded. The lever can lift up a bit without affecting the connection. A traditional wire nut has never been a good solution with stranded wire, since the wire nut was never designed to hold the wires together, just insulate a pre-twisted set of solid wires. We have all realized the wall-nut by Wago is not desirable as it isn't good for stranded wire and has a smaller contact patch. After a mechanical crimp, insulation is needed, but I do like mechanical crimps. While I rely on Super 33+ or Super 88 for any electrical tape purposes, having and insulated connection that is serviceable was desired here.
I was thinking of doing this but had the idea of using a key switch instead of a toggle so it can't accedently be bumped to the wrong position. Thanks for these vids, far clearer than anything else I've seen on this subject!
Thanks! A keyed switch would work also, it would just need to have sufficiently rated contacts.
OK After 45 years in the electrical craft I still can't understand why the 1/4 inch of difference between connecting the generators neutral to the Grounded/Neutral Conductor of the Service Entry Conductors and connecting that same neutral to the Grounded/Neutral Busbar; were I note that the US National Electric Code (NEC) specifically allows me to connect the Grounding Electrode Conductors; makes any electrical difference. My question is about the generators factory new condition and thus the generator's neutral is bonded to it's frame. If I put a saddle tap on the Grounded/Neutral Conductor of the Service Entry Conductors and connect the generator's Grounded/Neutral conductor on that saddle tap and tighten everything to specified torque the Code Making Panel for section 250 of the NEC thinks that is wonderful. If, instead, I connect the generators Grounded/Neutral Conductor to the Grounded/Neutral busbar a 1/4 inch away from the Grounded/Neutral Service Entry Conductor that is the END OF THE WORLD AS WE KNOW IT? Since You are a "EE", Electrical Engineer would you explain that 1/4 inch of lug metal making such a difference. Obviously I don't buy it. But maybe you know of some rational reason that I should. Tom Horne
Hi, Tom. While I'm not on the CMP, I spend a lot of time in NFPA sections. It appears that decisions fall into three categories: 1. a necessary approach for safety, 2. sponsored by industry, and 3. someone thought it was a good idea. My take is the key factor in bonding and grounding is reliability and repeatability in practice. There is no electrical difference where a connection is made if the resistance between options is negligible. The primary concern is that there is always resistance and some ground bars are just held in place with two screws, so the contact area is just the tub metal thickness * screw diameter * 2. As long as the installer takes care, as you describe, i'm happy.
I understand that not having two points of ground bonded to neutral is not proper, but in my opinion, the neutral is extremely important, years ago. I had a generator running when the neutral failed at the connection point, putting 240 through the house destroying a microwave And other things, since then I always keep the neutral bonded at the generator as well, so if the neutral is lost, the ground wire will take over the job. I realize this is not the proper way, but it gives me peace of mind.
I understand your approach, and the best solution with a bonded generator is a 3-pole transfer switch. The neutral is necessary, just as a good ground is, to prevent voltages from floating and damaging equipment. Ensuring the electrical installation is properly executed is important.
The backfed breaker for the generator feed needs a hold down. Usually that comes with the Homeline Interlock Kit. I don't see it attached. That is a code violation.
Good eye. The retaining bracket did not allow the cover to reinstall and fit properly, but Homline is budget and fitment issues are not uncommon with products that are dual-listed for QO and HOM (which this kit is). The retaining bracket is not an explicit NEC requirement, as other panel manufacturers do not include this bracket, but it is a manufacturer recommendation which NEC does require following. The purpose of the bracket is not to hold the breaker in-place, but to obscure access to the connections on the breaker.
If the ground and neutral are interrupted ( disconnected ) from the neutral of the service panel ( while the "main" is also off) would this still be necessary? Would the house not then be like providing power to any other device plugged in that required the Generator to be bonded?
If a 3-pole transfer switch is used, meaning the neutral conductor is switched with the phase conductors between utility and generator, then the generator is considered separately derived and must be bonded. It is very rare for a panel to have a neutral disconnect tied to the main breaker at the service entrance, at least in the US.
Just hit 110k so it's about time for a tune up. This was informative thx alot
Thanks for taking the time to share your knowledge. I have a question about the objectionable current flow in the diagram at 4:25. I understand that current takes all parallel paths back to the source but would there be current flowing on a the wire going out to the generator when it starts and ends at the same point? Seems if it starts and the neutral bus bar, goes to the generator then to the ground bus bar and then back to the neutral that there would be no potential difference to allow current to flow? Or is there just a minute voltage drop with virtually no resistance on that loop out to the generator that there ends up being a few milliamps of current?
Because the two paths are both low-resistance, the current split will be nearly equal, but not totally equal. The added wire and connection resistance in the path to/from the generator will result in a slight difference, maybe 60/40 or 55/45.
I'm late to the party. Great explanation that I doubt most folks are aware of when using a portable generator to provide backup power to your house. We have a Predator 8750 (7kW running) genie we use for home backup. The Predator has the Neutral/EGC bond in the receptacle panel not in the power head, I removed the bond. It our case it is unlikely we will ever use the genie standalone but did not want to prevent using it that way. So rather than using a switch I installed a Neutral/Ground jumper in a NEMA L14-30P twist-lock plug and hung it on the generator in case it every needed to be used standalone. This also eliminated the possibility of making a mistake as the L14-30 receptacle is how we connect it to the house. I added a label on the genie indicating it has an isolated neutral as a reminder in case anyone other then myself uses it standalone. Just a nit. It was not necessary to run additional wires to the power head as the neutral and ground conductors are available in the power panel. I assume you did it that way so you could keep the explanation simple.
Your solution makes sense, it's good that you were thinking about the issue. Yes, there are other ways to achieve this but I did want a simple solution.
I have the same generator as you. Thank you for identifying where the bond is, you saved me a lot of time!!
Electrical engineer and former journeyman electrician here. Why not just follow the NEC requirements? They exist for a reason. Lifting the EGC in the junction box is a mistake as it leaving the generator neutral bond intact while connected to your home breaker panel. Both are code violations, esp the second neutral bond. The ground rod to the generator, which presumably you added due to lifting the EGC as noted, is not needed and results in an additional hazard in that there is another path for neutral and fault currents to follow, ie: between the breaker panel ground rod and generator ground rod which exposes anyone in the vicinity to its potential. Likely the gnd rod is also a local code violation. The correct, and far simpler solution is to carry all 4 wires from the generator to their respective terminations in the breaker panel, eliminate the generator ground rod, and remove the neutral to gnd jumper in the generator. That is the safest approach, complies with the NEC, and has a chance of passing local inspection. Sheesh, there is so much bad intel on this subject.
I appreciate your comments. I'm happy to review your Code concerns, please list year, article, and section you're referencing. I assume you're referencing Art. 702. Art. 702.11 and 702.12 describe portable generator connection for Optional Standby Systems, but it ignores the problem I address. This video describes a solution for a problem that exists and is wide-spread: separately-derived generators being used in unswitched-neutral configurations. We agree that this common installation is a Code violation. The NEC does not adequately address this issue as it does not describe, the mis-match between the majority of commercially available products and their intended use. Neither 2023 Art. 250.34, nor Art. 445, address connecting portable generators to buildings and how to resolve bonding concerns, instead we just have 702.11 providing two options. 2023 NEC Art 250.6(B) lists ways to resolve objectionable current, and this solution satisfies either (B)(1) or (B)(3). Circulating current on normally non-current-carrying metal parts is objectionable, and dangerous. This is what I'm addressing with this video. I completely agree with you on the preferred solution, which I do mention several times, and that is exactly what I describe in a future video where I modify the generator to allow for a non-separately derived installation with the EGC path in-tact. However, asking a typical homeowner to open and modify generator bonding is less likely to be successful and safe than what I propose here. I'm weighing all of the options and trying to find the safest way to solve a problem that plagues installations with a solution that someone can accomplish easily. While I would prefer everyone just install 3-pole transfer switches, it's not realistic to draw that line in the sand and ignore reality. While I would prefer everyone modify their generator, it's also not reasonable. I'm making a case to the people that think it's OK to back-feed through a dryer receptacle. In this arrangement, there is no concern with a lack of fault current pathway as the two sources are mechanically interlocked. One area this video is lacking is the signage required by 702.7, which I have since added, but should have demonstrated.
How qualified are you, at the beginning of this video you talk about house power in terms of two phases there is no phases in a 120 240 system.
Go back to school smarty. 120 volts is single phase 240 volts is two phase. But obviously you know more.
@Cybertruck_69 is that right. So what is the phase angle ? Can't fix stupid, I'm referring to you
@Cybertruck_69 I have no time for the stupid. What is the phase angle then
Thank you very much for your series on wiring the transfer switch and the generator modification. This may be a stupid question but wouldn't it be sufficient to keep the generator unmodified (bonded) if and only if, the ground wire from the generator is lifted as shown in your earlier video (not connected to anything in the home). Wouldn't that be sufficient allow only one path back to the generator via the home bonding in the panel? Also if there was a fault at the generator or exterior connection receptacle, then the electricity could flow thru the bonding in the generator to ground via the neutral to the home ground? Thank you for helping us understand this topic
@JR-jn8jp tou are correct, my other video stands alone, allowing people to follow that step and not modify the generator.
How many square ft of guardian and CLD squares did you use on each door?
That's a good question, I used just under one box of Guardian per door as I only had 1.5 pieces left from the two boxes. I used a lot of CLD, the door surface area x3.
Can you *not* connect the neutral white wire from your inlet box to your electrical panel? would this cut the path to your generator?
@thimitri1 neutral is needed, it is the path back to the source. Without the neutral, all return current would be on grounds.
I don’t find this bag Pls send me a link
Sadly, it is discontinued. I still use mine. Finding one used may be the best solution.
Can the L14-30 receptacle on the portable generator by its self have a floating neutral, while maintaining a bonded neutral for the 20A 120V receptacles, so that they can be used while powering the house with the L14-30 receptacle? Or as shown in your previous video, you detailed how to isolate the ground at the inlet plug box to prevent that dual path to ground. In this scenario would the 20A 120V receptacles be usable?
@usafchief8985 with my process of isolating at the house receptacle, the generator can remain bonded and you can use the receptacles on the generator at the same time.
My generator has 2 white wires coming from the stator like yours but also have two whites going to the generator panel. They are running parallel and only one was jumped to ground. What’s going on here? Why was only one jumped, why are the two neutrals separated? Since I’m wanting it floated, after removing the jumper, should I connect all 4 together or leave the two sets separate like they are now?
Sorry for the delay. I would need to see a manufacturers wiring diagram and photos to advise on exactly what your wires are doing. You need to identify the generator's neutral-ground jumper, which may be one of the wires you describe.
@@richardvedvik979thanks. I’ve since found out that Duromax doesn’t know what they are talking about. They claim it’s floating out of the factory… but it’s not. It’s bonded.. they say it is floating because they have the stator and motor isolated from the frame using rubber mounts… I have corrected this by removing the jumper. I’m just confused as to why they would make this claim since doesn’t align with electrical code definitions.
What if you had a subpanel in your house where the grounds and neutral were separate. Can you put the generator to the subpanel to feed those breakers with the generator bonded neutrals and grounds together? Or do you still have to separate the generator neutrals and grounds?
@ctbt1832 the problem with trying to backfeed a sub panel is you cannot interlock the home's main breaker and generator breaker. So it's an unsafe condition. For bonding, there will still be two N-G bonds in the system.
I currently have an alpine c701 processor but I’m Having ground noise with it is this one similar to that one?
@evercontreras6725 I've ran a H701 before, it was the model before the H800. What else is in your signal path?
@@richardvedvik979 I have RCAs
@@richardvedvik979 is close to the distribution block
@@richardvedvik979 is close to the distribution block
@richardvedvik979, thank you for taking the time to create and post this video. Very clean implementation that allows for the greatest flexibility of use with your generator and a minute amount of future work to use it as a true portable or a whole house power source. With larger portable generators, and as "easy" as this modification was for your particular unit, I wonder why this "feature" is not a standard. The generator manufacturers know that many (most?) of their larger generators are going to be used as back up power for a house, to me it makes good sense for them to incorporate this into their build and then the consumer "knows" it has been implemented correctly.
I appreciate your video collection.. well done sir. From my studies and electronics background.. I recognise the bonded ground parallel problem with connecting to house panel with interlock. Do you know if the meter extension lifts the nuetral from utility? It doesnt look like it.. because the nuetral lugs are bus barred, not the hot legs.. So Im trying to understand which is best.. I understand the switch you installed on your generator And I understand the need to create a single pathway for nuetral ground.. which I have bonded nuetral generator. I was considering using a 3 phase disconnect to completely severe the UTILITY including their nuetral.. but that would be a major step involved asside from the interlock device.. it could be done, but would need mounted next to the service panel with clear instructions for disconnect first BEFORE INTERLOCK activation.. This 3 pole disconnect would illiminate the parallel pathing problem. And I would not need to create a floating nuetral switch like you did for yours.. Does the 3 pole disconnect feature at the service panel work correctly in your mind? I live in Florida under FPL My service panel is an older GE with shared nuetral ground bussbar.. I recognised the nuetral bonding and the parallel as an issue which is how I made my way to your video collections.. The meter extension seems fault proof, but the 3pole discconect should also do what I want. Your thoughts please.. safety and simplicity is also my goal.. to correctly illiminate the parallel nuetral/ ground and bonding issue
I cant add to the original comment question, so here is only option. My portable gen. Is an INVERTER generstor. Ryobi model RYi6522. I tested across all recepticals ground and nuetral.. it is fully bonded with breakers.. the 120 duplexes are gfci equipped. So..it wont work the meter extension transfer switch according to the manufacturer. So I have to figure out a salution to break UTILITY nuetral.. as described in original posted question. The 3 pole switch matching my service panel amp rating.. is the only option Im able to find so far.. With the configuration of my utility meter box mounted directly behind my service panel.. I have about 2.5ft of the large utility conductor to work with to go to 3pole disconnect sub panel.. and then buy new same guage to run back into service panel to main breaker and nuetral lug. I dont see any other options.. unless you know something I havnt found. The idea is to install both 30 amp L14 30 and 50amp strait blade external generator recepticals for standard, or upgraded generators..(obviously not both at the same time, just either or, but thats just an option at this point) Wanting to use #6 to backfeed gen 50amp breaker, nuetral/ ground to handle the 50amp gen set. L14 30amp will never be under rated, and the 50 amp option is already prewired.. thats the plan anyway.. Thoughts?
Sorry for the delay. The meter disconnect is described (and shown) in 2023 NEC Art. 702.5(B). This section does not clarify if the generator needs to be separately derived or not, so you'd have to verify with the meter-mounted transfer switch you'd have access to and your utility allows. Your best option is to switch the neutral and leave the generator bonded, as you suggest. Another good option is to revise the generator so it is not bonded and then you'd leave the wiring as-is. I have a video on revising the generator.
For your second post, the L14-30 on the RYi6522 would be best connected to another L14-30 recessed male receptacle as you expect. Routing through a 3-pole manual transfer switch would be preferred, but is also an expensive endeavor. Or, if we can find a wiring diagram, you could modify the generator to be floating neutral, but you'd then be unable to use it in standalone mode, as my video on modifying generator bonding describes.
I wonder if you can just get a neutral grounding plug which when plugged into 120 v receptor on the generator, you canvert it into a neutral bonded generator. This has been done for a lot of RVers when they have a floating neutral generator like Honda.
This describes the opposite scenario - where a bonded generator is connected to a home.
RVs typically don't have NG bond in the breaker panel. It's done at the pedestal. When a floating neutral generator is used you can typically just make a receptacle plug that has a jumper between the neutral and ground contacts. This just plugs into one of the generator receptacles to make the generator bonded.
When connected to the house with a generator that has been modified to the floating neutral I've seen the generator needs to be connected to a ground via the grounding lug on the generator. Can you explain that case? Does the generator need to be ground ed to a grounding rod via the grounding post on the generator? I've also read it need to be attached to a grounding rod that is 8 feet in the ground. Why?
Great content thank you for your time making these videos. In your first video you said that generators come bonded. But i have seen many generators especially ones to small to run your house that come floating neutral. Some of these generators have the proper outlet for transfer switch and some don’t. My question is what is the intent of the manufacturer selling these floating neutral generators?
The diagrams are awesome... helped me a bunch. My generator is floating neutral. Where I'll place the generator is very near the electric meter, which has a ground rod to it. So I plan to run my generator ground to that ground rod. Make sense?
Excellent video
Thank you for posting this. Question - the material you use for sound absorbtion - in case I am "allergic" to dust, do you know of other alternatives that would work as well? I am considering "3M Thinsulate SM600L" - it has no adhesives, so it could be folded and cut into pieces. Any other absorbers that you like?
just wear a mask