One of the items we had to look at when performing pump rotation checks was the 480 v lube oil tank heater. I'd always tell the new guys that we could tell if it was wired incorrectly if the lube oil got colder instead of hotter. That was so much fun.
Funnily enough, the day after watching this video my twin element hot water system gave up the ghost after tripping out over the last week or two. After prodding around with my tick tester, I finally gave up on it and bought my first Klein tool (only based on your recommendation of the brand), the simple ET40 voltage tester. With a couple of minutes of prodding with the Klein tester, a faulty thermostat was diagnosed. The Klein paid for itself almost in its first use.
You need to change the title of this channel to Einstein electric university because it seems like you you have to have a masters degree in electrical engineering to do the things you do! Absolutely love all your videos!
Very clear and informative. Where someone might get confused, is that you should probably draw line in the tank where it switches between both elements. It’s a much smaller tank on the top so the water heats up quicker. then it transfers over to the bottom tank which is bigger. I know you know all of this. But I think someone who doesn’t know what they’re looking at is going to get confused. You should just does every draw the line to show the quick recovery tank .
Wow. Never realized there was a thing as a three phase element. I thought a three phase water heater had 3 elements top, middle and bottom and connected to A-B, A-C & B-C. Never heard of duel volt elements either but it makes sense of connecting them in parallel for the lower voltage and in series for the higher voltage.
In my area just about everyone has nature gas water heaters so only wired a few in and troubleshoot them. A fiend had super hard water that caused one of the elements to burn out every year. We have a large rich pharmaceutical plant nearby that installed an electric boiler during one of the energy shortages. Ran off 4,160 Volt three phase. Cost a fortune to run so they only turned it on once a year for halve a day during a weekend.
Something to consider.... if the heater is in the garage, it's usually a 30amp circuit. If you swap the bottom T-stat with the kind used on the top where it transfers current to another t-stat, you can feed an EV car charger off the 2nd thermostat. So after your water heater is satisfied, it can then charge your car at up to 24amps.
Would have no problem doing that genius trick in my own house but with so many sue happy lawyers and liability issues including not listed would not offer it to any customers.
Very clever idea!! While on the subject of EV chargers and water heaters, specifically cord and plug connected. It seems that at one time, a cord and plug connection was allowed for a water heater, we found that while helping Dad remodel his 1973 ranch home. Panel was located in a bedroom closet, water heater was in the laundry/utility area on the opposite end of the home and connected via a nema 6-30 receptacle, as a means of disconnect. This is obviously no longer permitted, but you could use a nema 6-30 for a EV charger and water heater, and simply decide which to connect, if say there's limited space in the panel to add a new 240V circuit for an EV charger. I do not recommend this and am not responsible for any damages from following this suggestion.
@@Sparky-ww5re I gotta say that those plugs are not intended for daily plug cycles. The J1772 plug however is. If you are going to plug a portable EVSE in, please leave it there and don't unplug it every day. Now if you want to use the thermostat trick I mentioned above and put a 6-30 receptacle on that, ok then.
@@GeorgeWashingtonLaserMusket Good point. Most cars charge at a max of 32amps. Exceptions are teslas and the new electric pickups. However, most cars can charge quite satisfactorily at 240v 12 or 16 amps. The rule of thumb is XX amps at 240v equals XX miles per hour charging. So 12amps gives 12 miles per hour. If the car is parked for 8 hours, that's 96 miles by morning. So your future proof 50amp outlet is quite correct, but a 24amp charger will cover an awful lot of people's cases. Most people drive 30 miles a day.
A dual voltage element connected to the higher voltage is Kirchhoff’s Voltage Law in action. Some electric kilns, for example, have multiple elements and selector switches to control the firing rate, and depending on the settings, might use 2 elements in parallel, 2 elements in series, or something like that. If you were in an environment where say only 240 volts or 277 volts was available for some reason, you could for example, rig up two 120V 500 watt halogen worklights in series. The 277 volt system will make the lights brighter and not last as long, as you would have 138.5 volts supplied to each bulb, 130 volt bulbs be better in this example.
You should do a video about any experience you have with customers not trying to pay, and or how you go about protecting yourself from scandalous customers And what avenues to take if ever dealing with non paying customers.
Awesome video! Listen, I would really appreciate it if you could do like a financial aspect to what’s it’s like owning a company. Like bid pricing, material cost, how much time you have to finish the job and when you start to lose money in a job site. Thanks!
Or... There is a set of interlocking contactors switching the heater elements similar to a home hot water heater. The contactors would be in a box close by with fuses or breakers. Control wires, possibly 120v would go from the energizing coil(s) to a control panel with temp controllers and displays where an operation can monitor the temps, etc.
I am off grid solar and have a heat pump water heater. But it's backup heat source is the conventional 4500 w elements. Since 4500w would eat up 1/2 of my inverter power, I swapped them for 1500w elements. Takes longer to heat the water but it doesn't make me use interlocks of power management. Also the heat pump water heater pulls 360w when running in heat pump mode. So when the heat pump is functioning, I really don't even know the hot water heat pump is running.
Good stuff. Living in SoCal. These issues will be important now that Commiefornia is pushing hard to go 100% electrification. Yes new homes this year will likely not be plumbed for natural gas. They are also going after existing housing stock. Don’t ask silly questions about the power grid handling all this usage. Lol. By the way California will be a Boom for electricians. At this point they are busier than other trades.
Almost makes me re-think my career decisions, one of the problems with a parochial-college prep HS education. Hope none of my electrician buddies see this.
I like your video I gave just enough information. I was wondering if you were trying to find an easier way to make it to be followed. Can you use numbers? I like to label things with wire numbers to keep it straight and also to make it easier for the person coming behind me I’m curious about the picture submitted what are the terminals without wire for?
Can you do a video on grounding a multi family house. Example: 3 gang meter base feeding 3) 100amp panels, seperate ground rods or largerconductor and split bolt/daisy chain ect
My first house had electric hot water heater. At one time it actually had two different electric meters: one for the house, and one specifically dedicated to the water heater. Communist Edison then changed their billing such that a certain number of kilowatt hours were at a reduced rate, and everything went through 1 m. Electric hot water heater is extremely expensive, And the minerals in your water will destroy those heaters very very quickly. They must be flushed on at least a monthly basis.
@@Texas_krazy Of all people, Tex, You should know that a hot water heater does indeed heat hot water. I live in Phoenix, and for about five months of the year, my hot water heater heat hot water!
What happens if you take a 220v single phase water heater (4500 watts element) and hook it up to 110v? Does it just take twice as long or longer to heat? Does the wattage go up, stay the same, or go down?
Power (W) is equal to V^2 / R, so by halving the voltage on the same element you will reduce the power output by a factor of 4. Likewise, doubling the voltage will quadruple the power. So a 10 ohm element will deliver 1,440 watts of heating at 120V, 5760 watts at 240V, and 23,040 watts at 480V. The surface area of the heating element becomes an important factor at this point, as you risk damaging the element if the watt density rises above what the material is rated to handle.
@@ivandiaz5791 Indeed, current scales linearly with voltage in a resistive load. We can use Ohm's law directly (I=V/R) or divide the watts by volts. In the10 ohm example above, the same element draws 12 A @ 120 V, 24 A @ 240 V, and 48 A @ 480 V. Answering the OP's question directly, powering an element intended for 220 V at 110 V will increase the heating time by _at least_ a factor of four. In an ideal case it would be 4x, but in the real world you have to account for heat loss from the vessel to the environment. You might never be able to reach your target temperature if the rate of energy you're adding (watts) is less than the rate of loss to the environment. Down that road lies the dragon "differential equations", though, so "at least 4x" is good enough. :)
If we take as given that there is enough headroom in the main breaker, and we are able to easily run a second 240V circuit to the water heater, is there any downside to converting your sequential water heater to a simultaneous one?
What heat pump is going to produce the temperature needed to toast anything without destroying the refrigerant? Remember that a heat pump is just a refrigerator in reverse.
Great video/content! I have a rental property and new tenant needs an 80 gallon H20 tank. Only one I can find is light duty commercial Rheem dual element that ships as a simultaneous element wiring 4500/4500. The spec sheet says it can be field converted to non simultaneous via the terminal block L1 & L2 single phase. I only have 30 amp dual pole 240. Have any experience with these types of commercial units that are field convertible? thanks in advance sorry so long!
Hey Dustin, do you mind talking about troubleshooting . I’m experiencing a loss of power to a specific bedroom on a house and the breaker is tripped, there’s many reasons as we all know what would cause it to trip but wanted to see if you could make a video on troubleshooting residential breakers and circuits
I would put a clamp-on ammeter on a conductor and reset the breaker while I watched it. You can this was determine if there is a short circuit or if the breaker is defective. If the current draw does not exceed the breaker rating, the breaker is bad. If it exceeds the rating of the breaker, there is a short or low resistance faulting the circuit.
How do I install a 2 pole 30 amp breaker in an 50Amp RV for a instant tankless hot water heater? Can I add a small sub panel and add the 2 pole breaker and each pole can be on a separate leg of the 50 amp system? I cannot find clear information about this so any help would be greatly appreciated. Also us there a difference between regular breakers and RV breakers?
@@jahmanborneo1343 I'm from west Phoenix.....buckeye actually but I currently live on the central Oregon coast. And I don't want to use propane I'm fine with the electric and I'm not worried about tripping a breaker because the 50 amp system has plenty of power to be able to run an ac as well as the hot water I just won't use both ACs while using the hot water heater and the heater o have is sealed up very nicely I am not worried about critters. And this water heater can pull power from separate legs from the electrical system so it won't be making a significant dent in power consumption. Not to mention. It won't be constantly running only while showering. I already have a water softener and filtration system as well as UV. This unit is only 5.5KW and as I said that will be separated between 2 legs so about 2700 watts per leg. A 50 amp system can handle 12kw... 6kw per leg so I'll be fine I'm sure. But I appreciate your advice still and I plan to be going back to Arizona within the next year so if you know a reputable place I'd definitely be interested. Thank you!
@@mccarthymccarthy237 RVs typically do NOT have 240v appliances or devices, so the two 'hot legs' are simply used as two different 120v lines, to two SEPARATE power buses - therefore 100amps of usable power is CERTAINLY and COMMONLY possible - many of us certainly do especially during the hot summer 'two air conditioners at the same time' months!
@@mccarthymccarthy237 If you were to fully load one leg to 50 amps to the neutral, so 120 VAC, with nothing on the other leg, and then exceeded it, the ganged 50 amp breaker would trip. If instead, you started adding load to the other "hot" leg to neutral at 120 VAC, you could add up to 50 amps on that leg as well (since we're talking 120 VAC). At that point the neutral would be carrying 0 amps.
If you're talking about how reversing two leads will change motor direction it's simple. If you have a phase sequence of A-B-C-A-B (remember you're dealing with a circle) and you switch A and C you get C-B-A-C-B. If you switch A and B you get B-A-C-B-A. B and C gives A-C-B-A-C. Note that each of the reversals has a C-B-A in it, the reverse of the original A-B-C.
Actually, you can't tell from the photo whether it's simultaneous or alternate because you don't have the control portion. The element banks could be bridged in parallel off one contactor or controlled from two contactors.
There's a problem with the Y or star configuration. Unless the elements are also rated for 277 volts, you will be overdriving the heating elements and thus shortening their life.
I disagree with the answer you gave to the quiz. My answer would have been "you can't tell from that picture" because you don't see the other end of those two sets of 3-phase wiring. It looks to be industrial equipment, so I'll use industrial terms. Each of those sets of 3-phase wiring should be coming through contactors, one contactor for each 3-phase set. I haven't seen a dual ganged 3-phase contactor, but I don't see why that wouldn't exist, so in that case it would be simultaneous. If a single control wire is controlling both contactors it would be simultaneous (if it isn't obvious that the contactors are wired in parallel, look at the wire number labels if they haven't fallen off). If each contactor has it's own control wire then you still don't know. You then have to look at what is controlling the contactors to determine if it is set up to control in simultaneous or separate modes. IMHO, you are making too many assumptions on what you can't see.
@@BowensBlvd Definitely commercial. The only residential three-phase would be a large multi-unit and the individual units would be wired for single-phase anyway.
They could actually be driven off a single contactor. This is common is large industrial electric ovens where there are multiple three-phase banks in parallel.
No. The dip tube brings cold water to the bottom. In a residential dual element heater the upper element heats the water that is then drawn off the top. If the water at the top is at the set temperature then the thermostat switches the current to the bottom element to preheat the incoming water When the temperature of the water at the top drops below the threshold the thermostat switches back to the upper element to bring the output water back to temperature.
most commercial jobs ive done over the last few years dont use element water heaters anymore. its going the way of the dinosaur. insta hots are exponentially better
Electric water heater suck. I don’t care if you have to bring him barbecue bottles of natural gas to fire it up, but replace it with a gas water heater
Love the drawing board! Really helps illustrate what you're talking about.
One of the items we had to look at when performing pump rotation checks was the 480 v lube oil tank heater. I'd always tell the new guys that we could tell if it was wired incorrectly if the lube oil got colder instead of hotter. That was so much fun.
Funnily enough, the day after watching this video my twin element hot water system gave up the ghost after tripping out over the last week or two. After prodding around with my tick tester, I finally gave up on it and bought my first Klein tool (only based on your recommendation of the brand), the simple ET40 voltage tester. With a couple of minutes of prodding with the Klein tester, a faulty thermostat was diagnosed. The Klein paid for itself almost in its first use.
You need to change the title of this channel to Einstein electric university because it seems like you you have to have a masters degree in electrical engineering to do the things you do! Absolutely love all your videos!
Very clear and informative. Where someone might get confused, is that you should probably draw line in the tank where it switches between both elements. It’s a much smaller tank on the top so the water heats up quicker. then it transfers over to the bottom tank which is bigger. I know you know all of this. But I think someone who doesn’t know what they’re looking at is going to get confused. You should just does every draw the line to show the quick recovery tank .
Love the triad set up. Feels very efficient when dealing with higher wattage devices.
Greatly explained in a very detailed manner bro, keep rolling!
Love this content ,as an HVAC-R installer. This did show quite a bit.
That board you use to illustrate was definitely worth the money.
Wow. Never realized there was a thing as a three phase element. I thought a three phase water heater had 3 elements top, middle and bottom and connected to A-B, A-C & B-C. Never heard of duel volt elements either but it makes sense of connecting them in parallel for the lower voltage and in series for the higher voltage.
Now I know why I am not an electrician this is way over my head good presentation
In my area just about everyone has nature gas water heaters so only wired a few in and troubleshoot them. A fiend had super hard water that caused one of the elements to burn out every year. We have a large rich pharmaceutical plant nearby that installed an electric boiler during one of the energy shortages. Ran off 4,160 Volt three phase. Cost a fortune to run so they only turned it on once a year for halve a day during a weekend.
Something to consider.... if the heater is in the garage, it's usually a 30amp circuit. If you swap the bottom T-stat with the kind used on the top where it transfers current to another t-stat, you can feed an EV car charger off the 2nd thermostat. So after your water heater is satisfied, it can then charge your car at up to 24amps.
clever trick!
Would have no problem doing that genius trick in my own house but with so many sue happy lawyers and liability issues including not listed would not offer it to any customers.
Very clever idea!! While on the subject of EV chargers and water heaters, specifically cord and plug connected. It seems that at one time, a cord and plug connection was allowed for a water heater, we found that while helping Dad remodel his 1973 ranch home. Panel was located in a bedroom closet, water heater was in the laundry/utility area on the opposite end of the home and connected via a nema 6-30 receptacle, as a means of disconnect. This is obviously no longer permitted, but you could use a nema 6-30 for a EV charger and water heater, and simply decide which to connect, if say there's limited space in the panel to add a new 240V circuit for an EV charger. I do not recommend this and am not responsible for any damages from following this suggestion.
@@Sparky-ww5re I gotta say that those plugs are not intended for daily plug cycles. The J1772 plug however is. If you are going to plug a portable EVSE in, please leave it there and don't unplug it every day. Now if you want to use the thermostat trick I mentioned above and put a 6-30 receptacle on that, ok then.
@@GeorgeWashingtonLaserMusket Good point. Most cars charge at a max of 32amps. Exceptions are teslas and the new electric pickups. However, most cars can charge quite satisfactorily at 240v 12 or 16 amps. The rule of thumb is XX amps at 240v equals XX miles per hour charging. So 12amps gives 12 miles per hour. If the car is parked for 8 hours, that's 96 miles by morning. So your future proof 50amp outlet is quite correct, but a 24amp charger will cover an awful lot of people's cases. Most people drive 30 miles a day.
A dual voltage element connected to the higher voltage is Kirchhoff’s Voltage Law in action. Some electric kilns, for example, have multiple elements and selector switches to control the firing rate, and depending on the settings, might use 2 elements in parallel, 2 elements in series, or something like that. If you were in an environment where say only 240 volts or 277 volts was available for some reason, you could for example, rig up two 120V 500 watt halogen worklights in series. The 277 volt system will make the lights brighter and not last as long, as you would have 138.5 volts supplied to each bulb, 130 volt bulbs be better in this example.
You should do a video about any experience you have with customers not trying to pay, and or how you go about protecting yourself from scandalous customers And what avenues to take if ever dealing with non paying customers.
Awesome video! Listen, I would really appreciate it if you could do like a financial aspect to what’s it’s like owning a company. Like bid pricing, material cost, how much time you have to finish the job and when you start to lose money in a job site. Thanks!
Or... There is a set of interlocking contactors switching the heater elements similar to a home hot water heater. The contactors would be in a box close by with fuses or breakers. Control wires, possibly 120v would go from the energizing coil(s) to a control panel with temp controllers and displays where an operation can monitor the temps, etc.
I am off grid solar and have a heat pump water heater. But it's backup heat source is the conventional 4500 w elements. Since 4500w would eat up 1/2 of my inverter power, I swapped them for 1500w elements. Takes longer to heat the water but it doesn't make me use interlocks of power management. Also the heat pump water heater pulls 360w when running in heat pump mode. So when the heat pump is functioning, I really don't even know the hot water heat pump is running.
How long have you had your heat pump water heater? How do you like it? It sounds like it is a great choice for energy conservation.
@@markpetri3405 about six months. It’s in the basement. Serves double duty as a dehumidifier too. No issues. It just works.
Good stuff. Living in SoCal. These issues will be important now that Commiefornia is pushing hard to go 100% electrification. Yes new homes this year will likely not be plumbed for natural gas. They are also going after existing housing stock. Don’t ask silly questions about the power grid handling all this usage. Lol. By the way California will be a Boom for electricians. At this point they are busier than other trades.
Nice one Dustin the visuals really work well.
Thanks for making these videos
Great info. Justin Thank you.
You'll often find a lot of 600v electric water heaters here in Canada in large commercial buildings.
Almost makes me re-think my career decisions, one of the problems with a parochial-college prep HS education. Hope none of my electrician buddies see this.
Another amazing video! Thank you kindly for all you do! 🥰
I like your video I gave just enough information. I was wondering if you were trying to find an easier way to make it to be followed. Can you use numbers? I like to label things with wire numbers to keep it straight and also to make it easier for the person coming behind me
I’m curious about the picture submitted what are the terminals without wire for?
LOL! what a great teacher! you're great!
The steam generators I used to work on would use 2 480 heating elements with a contractor controlling them.
Hey Dustin,
Could you do a short video on how to wire a 2x2' lighting fixture with a LED emergency drive. Like which wire goes exactly where.
Thanks
I work at a car wash and we have a huge 480 volt water heater
Can you do a video on grounding a multi family house. Example: 3 gang meter base feeding 3) 100amp panels, seperate ground rods or largerconductor and split bolt/daisy chain ect
My first house had electric hot water heater. At one time it actually had two different electric meters: one for the house, and one specifically dedicated to the water heater. Communist Edison then changed their billing such that a certain number of kilowatt hours were at a reduced rate, and everything went through 1 m. Electric hot water heater is extremely expensive, And the minerals in your water will destroy those heaters very very quickly. They must be flushed on at least a monthly basis.
Reduced rate for electric water heaters was done away with DEREGULATION of the industry. All on one meter now?
It's a water heater, it doesn't heat hot water. I'm sorry bud, I hate correcting people, but on this topic I feel that I must.
@@Texas_krazy sport for asking questions on discord
@@Texas_krazy sorry for questions on discord
@@Texas_krazy Of all people, Tex, You should know that a hot water heater does indeed heat hot water. I live in Phoenix, and for about five months of the year, my hot water heater heat hot water!
What happens if you take a 220v single phase water heater (4500 watts element) and hook it up to 110v? Does it just take twice as long or longer to heat? Does the wattage go up, stay the same, or go down?
P = IE
Half the voltage results in half the wattage, and thus, twice as long to heat up.
Power (W) is equal to V^2 / R, so by halving the voltage on the same element you will reduce the power output by a factor of 4. Likewise, doubling the voltage will quadruple the power. So a 10 ohm element will deliver 1,440 watts of heating at 120V, 5760 watts at 240V, and 23,040 watts at 480V. The surface area of the heating element becomes an important factor at this point, as you risk damaging the element if the watt density rises above what the material is rated to handle.
@@icanreadthebible7561 Wrong. Current will not be the same. The other commenter is correct with his calculation.
@@ivandiaz5791 Indeed, current scales linearly with voltage in a resistive load. We can use Ohm's law directly (I=V/R) or divide the watts by volts. In the10 ohm example above, the same element draws 12 A @ 120 V, 24 A @ 240 V, and 48 A @ 480 V.
Answering the OP's question directly, powering an element intended for 220 V at 110 V will increase the heating time by _at least_ a factor of four. In an ideal case it would be 4x, but in the real world you have to account for heat loss from the vessel to the environment. You might never be able to reach your target temperature if the rate of energy you're adding (watts) is less than the rate of loss to the environment. Down that road lies the dragon "differential equations", though, so "at least 4x" is good enough. :)
@@skroz1 hi...want to hear more about damage
Can u go over how to diagnose a problem with the different types of water heaters u described in the video
If we take as given that there is enough headroom in the main breaker, and we are able to easily run a second 240V circuit to the water heater, is there any downside to converting your sequential water heater to a simultaneous one?
Thank you for not calling it a "hot water heater". 👍
Could you do a video on trouble shooting / fault finding using the multimeter on electrical circuits and motors etc.
Ground faults on a 3 phase system is something I wish i had to do less in industrial facility's
Great idea: A heat pump toaster. More efficient than your old-fashioned toaster.
What heat pump is going to produce the temperature needed to toast anything without destroying the refrigerant? Remember that a heat pump is just a refrigerator in reverse.
Great video thanks 👷♂👍
Great video/content! I have a rental property and new tenant needs an 80 gallon H20 tank. Only one I can find is light duty commercial Rheem dual element that ships as a simultaneous element wiring 4500/4500. The spec sheet says it can be field converted to non simultaneous via the terminal block L1 & L2 single phase. I only have 30 amp dual pole 240. Have any experience with these types of commercial units that are field convertible? thanks in advance sorry so long!
Hey Dustin, do you mind talking about troubleshooting . I’m experiencing a loss of power to a specific bedroom on a house and the breaker is tripped, there’s many reasons as we all know what would cause it to trip but wanted to see if you could make a video on troubleshooting residential breakers and circuits
I would put a clamp-on ammeter on a conductor and reset the breaker while I watched it. You can this was determine if there is a short circuit or if the breaker is defective. If the current draw does not exceed the breaker rating, the breaker is bad. If it exceeds the rating of the breaker, there is a short or low resistance faulting the circuit.
Where did you find your white board??? How much does it cost? What brandname?
The person that sent that picture is not working on a regular water heater. That is a small Dri-steem humidifier. It's a low pressure steam generator.
Does an electric hot water heat water as well as a natural gas one?
My $0.02 -- the "simultaneous" diagram describes how a tankless or "insta-hot" water heater works. Endless hot water in exchange for $$$.
First love this
How do I install a 2 pole 30 amp breaker in an 50Amp RV for a instant tankless hot water heater? Can I add a small sub panel and add the 2 pole breaker and each pole can be on a separate leg of the 50 amp system? I cannot find clear information about this so any help would be greatly appreciated. Also us there a difference between regular breakers and RV breakers?
@@jahmanborneo1343 I'm from west Phoenix.....buckeye actually but I currently live on the central Oregon coast. And I don't want to use propane I'm fine with the electric and I'm not worried about tripping a breaker because the 50 amp system has plenty of power to be able to run an ac as well as the hot water I just won't use both ACs while using the hot water heater and the heater o have is sealed up very nicely I am not worried about critters. And this water heater can pull power from separate legs from the electrical system so it won't be making a significant dent in power consumption. Not to mention. It won't be constantly running only while showering. I already have a water softener and filtration system as well as UV. This unit is only 5.5KW and as I said that will be separated between 2 legs so about 2700 watts per leg. A 50 amp system can handle 12kw... 6kw per leg so I'll be fine I'm sure. But I appreciate your advice still and I plan to be going back to Arizona within the next year so if you know a reputable place I'd definitely be interested. Thank you!
Rv are 120 1 leg ove power I believe don’t no newer one
@@mccarthymccarthy237 a 50 amp rv has 2 legs of 120V 50 Amps each
@@mccarthymccarthy237 RVs typically do NOT have 240v appliances or devices, so the two 'hot legs' are simply used as two different 120v lines, to two SEPARATE power buses - therefore 100amps of usable power is CERTAINLY and COMMONLY possible - many of us certainly do especially during the hot summer 'two air conditioners at the same time' months!
@@mccarthymccarthy237 If you were to fully load one leg to 50 amps to the neutral, so 120 VAC, with nothing on the other leg, and then exceeded it, the ganged 50 amp breaker would trip. If instead, you started adding load to the other "hot" leg to neutral at 120 VAC, you could add up to 50 amps on that leg as well (since we're talking 120 VAC). At that point the neutral would be carrying 0 amps.
Just thinking that maybe you could explain how three phase panels can be CCW or CW.
If you're talking about how reversing two leads will change motor direction it's simple. If you have a phase sequence of A-B-C-A-B (remember you're dealing with a circle) and you switch A and C you get C-B-A-C-B. If you switch A and B you get B-A-C-B-A. B and C gives A-C-B-A-C. Note that each of the reversals has a C-B-A in it, the reverse of the original A-B-C.
Actually, you can't tell from the photo whether it's simultaneous or alternate because you don't have the control portion. The element banks could be bridged in parallel off one contactor or controlled from two contactors.
The Day I learned how a water Heater worked changed my Electrical career..... (Air..ray)..chuckle...
Can i put my pop tart in the hot water heater to heat it up or use my furnace instead of the toaster?
I came here to find out if it is normal for a brand new water heater elements to operate everytime hot water is run 2 to 5 minutes?
There's a problem with the Y or star configuration. Unless the elements are also rated for 277 volts, you will be overdriving the heating elements and thus shortening their life.
in this video you had 240v with 3phase. wouldnt this be 208v?
208V 3 phase would be a wye configuration. 240V 3 phase would be a delta configuration. Just depends on how the transformers are configured
I disagree with the answer you gave to the quiz. My answer would have been "you can't tell from that picture" because you don't see the other end of those two sets of 3-phase wiring. It looks to be industrial equipment, so I'll use industrial terms. Each of those sets of 3-phase wiring should be coming through contactors, one contactor for each 3-phase set. I haven't seen a dual ganged 3-phase contactor, but I don't see why that wouldn't exist, so in that case it would be simultaneous. If a single control wire is controlling both contactors it would be simultaneous (if it isn't obvious that the contactors are wired in parallel, look at the wire number labels if they haven't fallen off). If each contactor has it's own control wire then you still don't know. You then have to look at what is controlling the contactors to determine if it is set up to control in simultaneous or separate modes. IMHO, you are making too many assumptions on what you can't see.
Agreed, just by seeing that it seemed like it was industrial or commercial setting. Up top could go to a switch gear and ect
@@BowensBlvd Definitely commercial. The only residential three-phase would be a large multi-unit and the individual units would be wired for single-phase anyway.
They could actually be driven off a single contactor. This is common is large industrial electric ovens where there are multiple three-phase banks in parallel.
Hay I’ve been seeing videos of diy where they tell a bunch of bad information for electrical work
most commercial buildings nowadays use tankless/instahot water heaters. elements are going the way of the dinosaur
7:08 ... HVAC/Plumbers have to use their brains from there, I landed my 3 wires, good luck lol classic electrician.
Water heaters draw the hot water from the bottom of the tank through an internal pipe not the top of the tank.
No. The dip tube brings cold water to the bottom. In a residential dual element heater the upper element heats the water that is then drawn off the top. If the water at the top is at the set temperature then the thermostat switches the current to the bottom element to preheat the incoming water When the temperature of the water at the top drops below the threshold the thermostat switches back to the upper element to bring the output water back to temperature.
always wondered how the element in the water, didn't break down and create a short in the water. Say toaster in bathtub.
Aren’t those feeders in the pipe the video is about a code violation
most commercial jobs ive done over the last few years dont use element water heaters anymore. its going the way of the dinosaur. insta hots are exponentially better
I assume you're talking about a gas tankless water heater
@@hunterbrooks6207 no. Electric
@@hunterbrooks6207 240 v just like the normal ones
They do use elements too but at a higher amperage rate. 9.5kw x3 elements.
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This was a good video
Duplex Motors.,
So.. Who's your new master?
Lol, no matter..
Now I know why I'm not
Electric water heater suck. I don’t care if you have to bring him barbecue bottles of natural gas to fire it up, but replace it with a gas water heater
I've installed many 480v water heaters. I didn't think it was that rare.