Cool text this morning from customer

[EG4 Electronics James]

Love seeing these installs.
I remember 10 years ago as an installer when this was totally impossible, so thankful for the DIY community as well as @Will Prowse ‘s wonderful platform

 

[schmism]

so there is a steel rack those batteries are hung on?

 

[AntronX]

Looks like rusty steel. Wood 2x4s would break under that kind of weight. 180 kWh of batteries.

 

[timselectric]

Those long exposed bus bars are scary.

 

[cowduck]

Looks incredibly dangerous actually.

 

[G00SE]

That’s pretty rad! Like the idea of hanging the batteries that way too

 

[ricardocello]

Those long exposed bus bars are scary.

Holy crap, those are near-floor to ceiling busbars!
Keep your socket wrenches and tire irons away from those!

 

[JRH]

Those long exposed bus bars are scary.

I missed the hell out of that … duhh…..mine are only a foot long and it scared me …so I built clear covers

 

[740GLE]

Looks like rusty steel. Wood 2x4s would break under that kind of weight. 180 kWh of batteries.

If it’s a steel rack, I’m curious how those bus bars are mounted to the steel rack. That’s a lot of trust for whatever insulators are there, I hope they double stacked them for added insurance.

 

[ricardocello]

Can anyone tell where the 18kpvs tie into the busbars?

 

[Brucey]

Can anyone tell where the 18kpvs tie into the busbars?

Looks like top and bottom.

 

[Bluedog225]

I have concerns.

 

[sunsurfer]

That should keep the hot tub warm well into Sunday.

 

[SparkyJJO]

If it’s a steel rack, I’m curious how those bus bars are mounted to the steel rack. That’s a lot of trust for whatever insulators are there, I hope they double stacked them for added insurance.

Looks like wood block?

 

[Danke]

Love seeing these installs.

not surprised

 

[dfw_dude]

damn -- I have two of those EG4 indoor batteries and thought I was doing pretty good, lol. I'd love a 3rd, but have to be somewhat reasonable on the ole' bank account.

To be fair - both of mine are running excellent I'm only like 1.5 hours west of Signature Solar where I got all my gear, slowly but surely building up my ground mount system outdoors, I think I'm at 20 battery cycles currently? only 7980 left, hahah

 

[shopman]

Looks like those bus bars are mounted on chunks of wood being used as isolation mounts. Wood is conductive, especially when it gets wet. Another "my house burned down" in the making.

 

[utkvols]

Don't lean your broom up there when you are sweeping the floor!

 

[740GLE]

Looks like those bus bars are mounted on chunks of wood being used as isolation mounts. Wood is conductive, especially when it gets wet. Another "my house burned down" in the making.

I can see it now, I’m more curious at the through bolts from bus bar to 2x4 insulator to the steel rack. Prob a plastic/delrain bushing with a collar.

 

[OffGridForGood]

Two 18kPV $10,000
12 EG4 batteries $40,000
28kW PV + racks $15,000
other parts $10,000
Labor ? $25,000
Wow, I think we are seeing what a $100k system looks like
We couldn't even imagine a system like this 4-5 years ago, when guys were spot welding 18650 cells into packs to build a system - remember?
Signature Solar, Current Connected, Watts247 are doing a lot of great work getting products & systems out.
Imagine what we will see posted in 2029 in the forum...exciting times ahead.

 

[mciholas]

From the EG4 manual:



The rear bracket does not appear to be design to support the entire weight of the battery (282 lbs). This install appears to use that bracket and there doesn't seem to be any support under the battery. Even the units near the floor appear to have their feet removed and seem to be supported by the rear bracket.

This is 3400 lbs supported in a questionable way.

This also doesn't meet the 7 inch unit to unit spacing specified in the manual.

Mike C.

 

[OzSolar]

Two 18kPV $10,000
12 EG4 batteries $40,000
28kW PV + racks $15,000
other parts $10,000
Labor ? $25,000
Wow, I think we are seeing what a $100k system looks like
We couldn't even imagine a system like this 4-5 years ago, when guys were spot welding 18650 cells into packs to build a system - remember?
Signature Solar, Current Connected, Watts247 are doing a lot of great work getting products & systems out.
Imagine what we will see posted in 2029 in the forum...exciting times ahead.

It's certainly impressive but I'm asking myself what they are doing to need 36kW of instantaneous power. You'd need to be totally off grid with 2 EV's and all electric house to come close that sort of draw.

Are they trying to run 20kW of heat strips during an ice storm power outage? I'm in the office now but used to be the electrician in the field. Our utility meters scroll through different screens, one shows the all time peak KW and I never saw one over 27kW. That was a 6000ft2 all electric house, hot tub, 2 x water heaters and 2 x heat pumps with strips, a swimming pool and an EV. The owner was paying no attention to when or how they used power and never even came close to justifying thier 400 amp service, let alone a 200 amp. A 200 amp service pencils out to 48kW.

Don't hear me judging anybody, just curious how much attention was paid to choosing this size of a system.

 

[OffGridForGood]

It's certainly impressive but I'm asking myself what they are doing to need 36kW of instantaneous power. You'd need to be totally off grid with 2 EV's and all electric house to come close that sort of draw.

Are they trying to run 20kW of heat strips during an ice storm power outage? I'm in the office now but used to be the electrician in the field. Our utility meters scroll through different screens, one shows the all time peak KW and I never saw one over 27kW. That was a 6000ft2 all electric house, hot tub, 2 x water heaters and 2 x heat pumps with strips, a swimming pool and an EV. The owner was paying no attention to when or how they used power and never even came close to justifying thier 400 amp service, let alone a 200 amp. A 200 amp service pencils out to 48kW.

Don't hear me judging anybody, just curious how much attention was paid to choosing this size of a system.

I wondered the same thing, but as you say we don't know what their loads are, or what solar potential they have.
Comparing to my own system - that runs my home and business next door - this sizing seems odd.

I would love to have 168kWh ESS, but honestly my current 99.6 allows plenty of storage for my needs, and I only run 13kW of Solar and I'm not in sunny Arizona or SoCal. I wonder if this system will hit 100% charge by 10:00AM most days of the year.

 

[Brucey]

It's certainly impressive but I'm asking myself what they are doing to need 36kW of instantaneous power. You'd need to be totally off grid with 2 EV's and all electric house to come close that sort of draw.

Are they trying to run 20kW of heat strips during an ice storm power outage? I'm in the office now but used to be the electrician in the field. Our utility meters scroll through different screens, one shows the all time peak KW and I never saw one over 27kW. That was a 6000ft2 all electric house, hot tub, 2 x water heaters and 2 x heat pumps with strips, a swimming pool and an EV. The owner was paying no attention to when or how they used power and never even came close to justifying thier 400 amp service, let alone a 200 amp. A 200 amp service pencils out to 48kW.

Don't hear me judging anybody, just curious how much attention was paid to choosing this size of a system.

From the metal building backstop may be powering a workshop or other thirsty machines versus a house.

 

[OffGridForGood]

what they are doing to need 36kW of instantaneous power.

Correct me if this isn't right, but the EG4 18k PV is actually 12kW output yes?
So x 2 this is 24kW max output? (about 100 Amps 240)