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Any issue with having the switching and solar gear outside and Powerwall in garage?

jboy210

Supporting Member
Dec 2, 2016
4,849
2,982
Northern California
Hi,

This is probably a silly questions, but I will ask. The most logical spot to install the solar inverter and any gear connected to grid is on the outside of our garage right next to the PG&E meter and boxes. I prefer to put the powerwall(s) inside the garage so it is out of the weather and potential vandals. Is there any issue with doing this? Is is common?
 

Zythryn

Model Y custom Warming Stripes wrap.
Mar 18, 2009
2,169
1,189
Minnesota
The installers should be able to give you an absolute answer.
However, in our case our switching panel is in our basement, inverters are on the outside of the house, the PowerWalls are inside the garage. I don’t think you will have any trouble ;)
 
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KY-Lonewolf

Supporting Member
Oct 6, 2019
50
46
Kentucky
In my case:
Service Panels (house loads) - Basement
Inverters - Basement
ATS (for backup generator) - Basement
PV Loads Panel (inverters AC disconnect) - Basement
Generation Combiner Panel (inverters and PWs AC disconnect) - Outside next to meter
Backup Gateway - Inside Garage
Powerwalls - Inside Garage
 

PhatCat

Kisco Kid
Jun 14, 2012
438
612
Mt Kisco, NY
OP: Your setup is exactly the same as the installation in my house in Hawaii. The one thing the installer mentioned is that they are locating the powerwalls on a side wall so they will not be exactly hit by cars entering or leaving. The three powerwalls are being stacked front-to-back on the floor.
 

d21mike

Active Member
Aug 28, 2017
1,096
722
Torrance, CA 90503
This is exactly what I did. And my powerwalls are on the other side of inside the garage. They wanted other boxes inside but it was not good for me. Meter side of garage is where my wife parks her M3 and I park my MS next to her do have boxes on the wall would be issue for the wife. We also had two wall chargers installed next to our cars with 8’ cords. Load balance. All great.
 

gpez

Member
Apr 25, 2019
635
509
USA
My Powerwall, Powerwall Gateway, and Enlighten gateway are all outside on the north side of the house with the meter. The local utility had to upgrade my meter to one that supports two way power as well as having to install a production meter for production incentive calculations.

Everything except the Powerwall is on the ungated side of the house from the street it's hard to tell that anything is there since it is flush on the house and "hidden" behind my garbage and recycling cans. The Powerwall is on the same side of the house but behind a gated fence.

We chose this set up because our garage is 2 cars but is very tight already even with sedans. The side of the house the equipment is on is protected from direct rain due to the roof awning overhang and it doesn't get much below freezing here in the Pacific Northwest so keeping it warm wasn't a consideration for 90% of the year. All of this was suggested and approved by the local Tesla authorized installer that did our work.

In hindsight I may have moved the Powerwall inside but that would have required additional conduits and piercing of the garage envelope. With this set up the already existing entry point in to the garage to the electrical panel was the only thing needed so no more holes were drilled. It was simpler and cheaper this way, but again I may have considered putting the Powerwall inside to keep it more protected.
 

charlesj

Active Member
Oct 22, 2019
1,076
219
Monterey, CA
The installers should be able to give you an absolute answer.
However, in our case our switching panel is in our basement, inverters are on the outside of the house, the PowerWalls are inside the garage. I don’t think you will have any trouble ;)
Did your installation cost go up because of the locations not being central in one place?
 

Zythryn

Model Y custom Warming Stripes wrap.
Mar 18, 2009
2,169
1,189
Minnesota
Did your installation cost go up because of the locations not being central in one place?
No, but the quote was not given until they did a site survey, so they knew what they were getting into.
I would fully expect any installers, of any product to take into account the amount of materials needed for a job.
 

charlesj

Active Member
Oct 22, 2019
1,076
219
Monterey, CA
No, but the quote was not given until they did a site survey, so they knew what they were getting into.
I would fully expect any installers, of any product to take into account the amount of materials needed for a job.
Thanks. I guess Tesla knew what is needed from the pictures they requested from me where the installation should be.
 

Dan123

Member
Jun 19, 2018
451
297
Miami
Hi,

This is probably a silly questions, but I will ask. The most logical spot to install the solar inverter and any gear connected to grid is on the outside of our garage right next to the PG&E meter and boxes. I prefer to put the powerwall(s) inside the garage so it is out of the weather and potential vandals. Is there any issue with doing this? Is is common?

That's how I have it. I think that's common.
 

chrisbailey13

Member
Sep 17, 2019
96
75
Central Florida
Great. Unfortunately I do not have permission to view the images.
Hmmm...

full


full
 

mspohr

Well-Known Member
Jul 27, 2014
9,148
10,646
California
Hi,

This is probably a silly questions, but I will ask. The most logical spot to install the solar inverter and any gear connected to grid is on the outside of our garage right next to the PG&E meter and boxes. I prefer to put the powerwall(s) inside the garage so it is out of the weather and potential vandals. Is there any issue with doing this? Is is common?
I believe that there are some new regulations in California that prohibit a battery backup unit in a garage unless it is protected by a steel bollard. Might want to get it installed before the first of the year.
 

jboy210

Supporting Member
Dec 2, 2016
4,849
2,982
Northern California
I believe that there are some new regulations in California that prohibit a battery backup unit in a garage unless it is protected by a steel bollard. Might want to get it installed before the first of the year.

First of year is not going to happen. Steel bollards in front of potential fire sources had been a thing for years in California. Any condo has to have one or two in front of water heater in garage, or any gas lines near a driveway. My rental has them and it was built in 2013/14. You can buy one for $90-120 at Home Depot.

Do you need them is you wall mount?
 

mspohr

Well-Known Member
Jul 27, 2014
9,148
10,646
California
First of year is not going to happen. Steel bollards in front of potential fire sources had been a thing for years in California. Any condo has to have one or two in front of water heater in garage, or any gas lines near a driveway. My rental has them and it was built in 2013/14. You can buy one for $90-120 at Home Depot.

Do you need them is you wall mount?
Doesn't look like you can wall mount

608.2.3: Stationary Battery Arrays: Stationary battery arrays cannot exceed 50kWh and must be spaced 3’ apart and spaced 3’ from walls and other equipment.

Also

608.1.5: Vehicle Impact Protection: Vehicle impact protection (where applicable) is now required in accordance with section 312. This protection is typically provided by 4” diameter steel bollards placed no more than 4’ apart and should rise no less than 3’ above grade.

Challenges for batteries in the California fire code
 

jboy210

Supporting Member
Dec 2, 2016
4,849
2,982
Northern California
Doesn't look like you can wall mount

608.2.3: Stationary Battery Arrays: Stationary battery arrays cannot exceed 50kWh and must be spaced 3’ apart and spaced 3’ from walls and other equipment.

Also

608.1.5: Vehicle Impact Protection: Vehicle impact protection (where applicable) is now required in accordance with section 312. This protection is typically provided by 4” diameter steel bollards placed no more than 4’ apart and should rise no less than 3’ above grade.

Challenges for batteries in the California fire code

That 3 foot from a wall is going to be a challenge for any battery system. I hope they amend that or I will probably not get a powerwall. Not sure where one would put it inside or out and want to run 3+ feet of electrical conduit between wall and the Powerwall. Also does the 3 foot foot between "other equipment" mean Powerwalls need to be separated by 3 feet from each other?

If these are the codes and there is no variance I will likely not be able to install a Powerwall and will need to install something like a gas generator for backup from the PSPS.
 
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