Here's the list. Which one do you guys think I missed? 1. Critter Guards 2. Consumption Monitors 3. Attic Runs 4. Microinverters 5. Generator Modules 6. Bi-Annual Cleaning Service 7. Solar-Integrated EV Charger
The RDS (rapid shut down) requirement added to the most recent additions of the NEC (national electric code) works against those who want to try to install string inverters. The NEC basically requires you to install multiple failure points that simply aren't a problem when using string inverters. Also string inverters are typically at ground level and much more easily replaced. In my opinion string inverters are easier to troubleshoot because the whole array will stop functioning. String inverters are much more reliable regardless of the propaganda PREACHED to the contrary.
Had critter guards installed this week. The squirrels chewed on the wires and shorted when they got wet, tripping the breaker. They have thousands of acorns in my yard to eat but I guess they wanted a little variety.
RE the critter guards I have a barrel tile roof so I cannot use these (as you presented them) but I do have a thought about the skirts. I've seen these in my community on some of the flat tile roofs. My first thought about the skirts was I liked the look and the aerodynamics in possible strong wind storms. But several pros told me the skirts are NOT recommended because air flow under the panels is blocked thus causing excessive heat buildup and lowering the efficiency of the panels. Do you concur this? On the aerodynamics my guy also told me it's not necessary as the system he installed with Sunmodo TopTile hurricane rated mounts. So he said no need to worry about wind either.
Jack I like your channel. I've only subscribed to three channels on UA-cam. Yours is now the 3rd. I live in Tampa, FL. I have a 12.4kw (29 Maxeon (formerly Sunpower) M425s with IQ7HS inverters)) for my 3600 SqFt. two story home. Installed it May 2024. On a good late spring or summer sunny day I can generate avg 75-78 kWh of AC power in a day. about 20,000+ kWh/yr. I use about 18,000 kwh/yr in the home, at this point. I'm an industrial engineer by profession so I appreciate the no-nonsense, technical answers to relevant questions. RE the critter guards I have a barrel tile roof so I cannot use these (as you presented them) but I do have a thought about the skirts. I've seen these in my community on some of the flat tile roofs. But several pros told me the skirts are NOT recommended because air flow under the panels is blocked thus causing excessive heat buildup and lowering the efficiency of the panels. Do you concur this?
@@jackthesolarguy I was gonna use old pallets that I grabbed from behind the grocery store and some scrap lumber from the dumpster or FB Markteplace :) In all seriousness....you have a great channel keep up the good work.
I mounted mine along my backyard Cinderblock wall using 2x3" wood Rails and Tapcons to the brick, and then 1x2 wood to build square frames for each panel that offset them slightly from the wall, then 4" hinges mounted to each square frame then mounted back to the 2x3". You can use Gate T brackets from Lowes or home depot on the square frames to build the angled leg supports that line up in the cinderblock cracks and support the panels. When's summers over I can easily tilt all the panels more south, I can also fold the panels down out of the way for storms or maintenance. I mounted 4 panels for less than $50 and looks clean as heck.
@@mikeleaming5529 I would love to see a picture of your cinder-block wall mounts! I've thought about this idea, but my wall runs east to west. I'd have to tilt the panels well above the top of the walls in the winter to catch the low rising sun to the south during winter. I built a simple square table-like frame for my ground mount arrays. I used only 2x4's and 2x6's and 4"x4's as posts. The 4x4 posts stand on pavers that are just laid on the ground. Each of the 2x ground mount arrays holds 6x 340W panels. The weight of the wood, fasteners, and the panels keep it from moving in high winds. The panels/arrays lay flat like a table top. It has worked well for the last three years, but I wouldn't mind expanding to more panels on our privacy cinder-block walls. Cost ~$200 for each ground mount, did the work myself, they feed 2x AC300's with 8x B300's.
Critter guards is a very good extra to go for. Also using filtered water for washing. Thanks for the tips! On the integrated EV charger, a large number of states will provide a tax credit on the purchase of one, so that will make the cost of getting a bi-directional charger a worthwhile expenditure.
For the vertical run from the roof, I routed the conduit against the downspout. I routed the conduit horizontally between the bottom edge of the siding and the concrete foundation. I spray painted the conduit to closely match the siding; very unobtrusive method to aesthetically blend the build into the existing structure.
I have plenty of rain, but for me, there is a grim or film that slowly builds up on the surface. soap with a soft brush takes it off. It builds up enough over several years that it needs the cleaning. perhaps pollution? pollen? I don't know
With the increased temperatures in so many locations, I see this causing more fire issues and cable problems than critters ever could! Highly dangerous.
@@artsmith103 Inside the roof might be cooler, but it's obvious that black surfaces attract heat. With open ended panels there's also obviously a natural airflow that helps to cool the panels. Shut that airflow off, or significantly reduce it and the space under the panels will heat up. Why do you think that all installations gave a 2-4" space underneath? Why to other options have a mesh design to continue to allow airflow? Go ahead and try it and let me know what happens. I guarantee that it will reduce the lifespan of the panels, micro inverters and cables while also reducing output of the panels by a minimum of 2% just to make them look nice.
I've been trying to decide between micro inverters or string, however, I have decided to go with String as it is a single failure point instead of 29 failure points for my system. While yes, the whole system will go down, it's also 28 less items that could potentially fail and doesn't require the roof being accessed to fix it. I will be curious to find out how many people with 29 microinverters make it 25 years without an issue with one of them.
... then imagine you want to add more panels after five years but the manufacturer of the micro inverters is no longer around or the micro inverters are no longer compatible... String just makes more sense - especially with split PV panels equipped with diodes... just perhaps add another MPPT module.
install #1. have 17 microinverters. in my case, there warranty is 5 years. (Enphase) I think they are better now. install #2. In another house, its a string inverter (2 feeds) since they are two roof sides. String one was cheaper but its inverter is at capacity, so it would cost more if I want to add a few panels.
I design my solar systems to supply only one or more appliances and lighting, not the whole house. I use several cheaper charge controllers, 1 tied to each PV string, and all tied to a central busbar. Each charge controller runs at about 1/3 of capacity to charge my batteries and each may charge at a different rate depending on time of day and shading. All the batteries are tied to that central busbar so that all batteries are charged equally. Then my inverters are also tied to that busbar. The best thing about my designs is that if my batteries get low or I lose an inverter, the appliances are automatically switched back to grid power.
NJ Trinity Solar recently quoted me only installing Tesla string inverters & QCell 410w for the same price as Enphase and REC 460w panels. Watch out get several quotes and site surveys for a full refund.
the next step will be to buy a new inverter because your old inverter have only 94% rendement and the new one can have 95 % like that you do not need a ROI calculation because you never going to make the outcome from it.
Here's the list. Which one do you guys think I missed?
1. Critter Guards
2. Consumption Monitors
3. Attic Runs
4. Microinverters
5. Generator Modules
6. Bi-Annual Cleaning Service
7. Solar-Integrated EV Charger
The RDS (rapid shut down) requirement added to the most recent additions of the NEC (national electric code) works against those who want to try to install string inverters. The NEC basically requires you to install multiple failure points that simply aren't a problem when using string inverters. Also string inverters are typically at ground level and much more easily replaced.
In my opinion string inverters are easier to troubleshoot because the whole array will stop functioning. String inverters are much more reliable regardless of the propaganda PREACHED to the contrary.
You missed having an automatic transfer back to grid in case of failure.
Had critter guards installed this week. The squirrels chewed on the wires and shorted when they got wet, tripping the breaker. They have thousands of acorns in my yard to eat but I guess they wanted a little variety.
I have optimisers rather than microinverters, and a central inverter.
RE the critter guards I have a barrel tile roof so I cannot use these (as you presented them) but I do have a thought about the skirts. I've seen these in my community on some of the flat tile roofs. My first thought about the skirts was I liked the look and the aerodynamics in possible strong wind storms. But several pros told me the skirts are NOT recommended because air flow under the panels is blocked thus causing excessive heat buildup and lowering the efficiency of the panels. Do you concur this?
On the aerodynamics my guy also told me it's not necessary as the system he installed with Sunmodo TopTile hurricane rated mounts. So he said no need to worry about wind either.
Jack I like your channel. I've only subscribed to three channels on UA-cam. Yours is now the 3rd. I live in Tampa, FL. I have a 12.4kw (29 Maxeon (formerly Sunpower) M425s with IQ7HS inverters)) for my 3600 SqFt. two story home. Installed it May 2024. On a good late spring or summer sunny day I can generate avg 75-78 kWh of AC power in a day. about 20,000+ kWh/yr. I use about 18,000 kwh/yr in the home, at this point. I'm an industrial engineer by profession so I appreciate the no-nonsense, technical answers to relevant questions.
RE the critter guards I have a barrel tile roof so I cannot use these (as you presented them) but I do have a thought about the skirts. I've seen these in my community on some of the flat tile roofs. But several pros told me the skirts are NOT recommended because air flow under the panels is blocked thus causing excessive heat buildup and lowering the efficiency of the panels. Do you concur this?
Most of these points are why I am going to ground mount. If you have the room it seems the best option.
Ground mount is a great option. Slightly higher cost because of the racking/concrete/trenching, but comes with benefits.
@@jackthesolarguy I was gonna use old pallets that I grabbed from behind the grocery store and some scrap lumber from the dumpster or FB Markteplace :) In all seriousness....you have a great channel keep up the good work.
I mounted mine along my backyard Cinderblock wall using 2x3" wood Rails and Tapcons to the brick, and then 1x2 wood to build square frames for each panel that offset them slightly from the wall, then 4" hinges mounted to each square frame then mounted back to the 2x3". You can use Gate T brackets from Lowes or home depot on the square frames to build the angled leg supports that line up in the cinderblock cracks and support the panels. When's summers over I can easily tilt all the panels more south, I can also fold the panels down out of the way for storms or maintenance. I mounted 4 panels for less than $50 and looks clean as heck.
@@mikeleaming5529 I would love to see a picture of your cinder-block wall mounts! I've thought about this idea, but my wall runs east to west. I'd have to tilt the panels well above the top of the walls in the winter to catch the low rising sun to the south during winter. I built a simple square table-like frame for my ground mount arrays. I used only 2x4's and 2x6's and 4"x4's as posts. The 4x4 posts stand on pavers that are just laid on the ground. Each of the 2x ground mount arrays holds 6x 340W panels. The weight of the wood, fasteners, and the panels keep it from moving in high winds. The panels/arrays lay flat like a table top. It has worked well for the last three years, but I wouldn't mind expanding to more panels on our privacy cinder-block walls. Cost ~$200 for each ground mount, did the work myself, they feed 2x AC300's with 8x B300's.
Critter guards is a very good extra to go for. Also using filtered water for washing. Thanks for the tips! On the integrated EV charger, a large number of states will provide a tax credit on the purchase of one, so that will make the cost of getting a bi-directional charger a worthwhile expenditure.
Excellent point! I used to live in a state which had massive subsidies for EV’s and related products. Can be a good solution
For the vertical run from the roof, I routed the conduit against the downspout. I routed the conduit horizontally between the bottom edge of the siding and the concrete foundation. I spray painted the conduit to closely match the siding; very unobtrusive method to aesthetically blend the build into the existing structure.
In the UK we have a weekly cleaning service. Its called "rain".
I use a squeegee and the morning dew. It's called cheap!
I have plenty of rain, but for me, there is a grim or film that slowly builds up on the surface. soap with a soft brush takes it off. It builds up enough over several years that it needs the cleaning. perhaps pollution? pollen? I don't know
Wouldn't the skirt guard reduce air flow under the panels increasing panel temperature which reduces the panel efficiency?
That is correct, and is a downside of using the skirt guard as opposed to wire guard. Great point
With the increased temperatures in so many locations, I see this causing more fire issues and cable problems than critters ever could! Highly dangerous.
@simonpaine2347 I think you made that up. Roof should be much cooler with panels than without
@@artsmith103 Inside the roof might be cooler, but it's obvious that black surfaces attract heat. With open ended panels there's also obviously a natural airflow that helps to cool the panels. Shut that airflow off, or significantly reduce it and the space under the panels will heat up. Why do you think that all installations gave a 2-4" space underneath? Why to other options have a mesh design to continue to allow airflow?
Go ahead and try it and let me know what happens. I guarantee that it will reduce the lifespan of the panels, micro inverters and cables while also reducing output of the panels by a minimum of 2% just to make them look nice.
@@simonpaine2347 You said the roof would be hotter than no panels. That's what I corrected.
I've been trying to decide between micro inverters or string, however, I have decided to go with String as it is a single failure point instead of 29 failure points for my system. While yes, the whole system will go down, it's also 28 less items that could potentially fail and doesn't require the roof being accessed to fix it. I will be curious to find out how many people with 29 microinverters make it 25 years without an issue with one of them.
... then imagine you want to add more panels after five years but the manufacturer of the micro inverters is no longer around or the micro inverters are no longer compatible...
String just makes more sense - especially with split PV panels equipped with diodes... just perhaps add another MPPT module.
install #1. have 17 microinverters. in my case, there warranty is 5 years. (Enphase) I think they are better now. install #2. In another house, its a string inverter (2 feeds) since they are two roof sides. String one was cheaper but its inverter is at capacity, so it would cost more if I want to add a few panels.
A question with the critter guards, won't the mesh be a way better option than the panels because of airflow and cooling of the pannels?
That is correct. Mesh guards are more economical and effective, whereas the solid guard is more aesthetically pleasing
I design my solar systems to supply only one or more appliances and lighting, not the whole house.
I use several cheaper charge controllers, 1 tied to each PV string, and all tied to a central busbar.
Each charge controller runs at about 1/3 of capacity to charge my batteries and each may charge at a different rate depending on time of day and shading.
All the batteries are tied to that central busbar so that all batteries are charged equally.
Then my inverters are also tied to that busbar.
The best thing about my designs is that if my batteries get low or I lose an inverter, the appliances are automatically switched back to grid power.
When did they make an RX-8 EV?
NJ Trinity Solar recently quoted me only installing Tesla string inverters & QCell 410w for the same price as Enphase and REC 460w panels. Watch out get several quotes and site surveys for a full refund.
Good things to keep in mind.
Thanks
A solid skirt will reduce airflow under the panel, making it hotter, and thus reducing the output.
That is correct, and is a downside of using the skirt guard as opposed to wire guard.
I didn't see Nevada listed for a solar quote?
That must be a mistake. You can book in another state and put your address in for NV
The wire guard versus the solid pre-fab guard: The wire guard is much better since the air flows under the panels is far better. Heat is loss...
That is correct, and is a downside of using the skirt guard as opposed to wire guard.
what i am reading every time solar is free well with buying this the cost will only go up.
the next step will be to buy a new inverter because your old inverter have only 94%
rendement and the new one can have 95 % like that you do not need a ROI calculation
because you never going to make the outcome from it.
you said this was cheap
Relative to the cost of a solar investment, these add ons can be considered cheap.
Very misleading title!