HighTechLab
AKA Dexter - CTO of Current Connected, LLC
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did I hear someone mention pushing the limits???
EG4 Indoor 280Ah 48v WallMount Battery
- Thread starter EG4_Jared
- Start date
ruralsolar
New Member
I was looking at the Big Battery Rhino for this reason, I have wall space but not much floor space so the less than 5 inch depth is intriguing. Price point is not as good though compared to this EG4 or the Ruixu wall mount units
I really have to agree with this, and hope we see a change to this in the manual. Space is often a problem, and forcing us to spread things out for no real reason related to safety or performance does a disservice to everyone but bureaucrats and insurance adjusters looking for any reason to deny a claim. Please don't feed either of those two beasts.
Here in Ontario, the rule is 1m spacing between ESS units/batteries, OR as per manufacture's installation instructions. So even here, we'd have to space it out 12" then, even though it was tested closer together and is safe that way.
I'm not sure if I'd be buying these at some point, but for everyone's sake, it would be beneficial if the manual was updated.
Can these be controlled/monitored through the EG4 Comms Hub? For those of us with a rack already in place - this would be an easy way to continue to add storage in a smaller footprint, but I don't want to have to replace those I already have.
EG4_Jared
Online Support for EG4 Electronics
Not at this time. However, I will send this over to our engineering team.
EG4_Jared
Online Support for EG4 Electronics
EG4_Jarrett
Solar Enthusiast
UpNorthMan
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Is there a requirement of minimum open distance in front of the batteries?
I live in Minnesota so NEC 2023 code. My potential power shead is 6' X 6'. I am hoping to place them back to back. (I see now that they require 7" spacing. )
I live in Minnesota so NEC 2023 code. My potential power shead is 6' X 6'. I am hoping to place them back to back. (I see now that they require 7" spacing. )
wpns
Solar Joules are catch and release
Where do you see that?
UpNorthMan
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wpns
Solar Joules are catch and release
Sorry, I got confused by your reference to back-to-back spacing (while maybe querying front to back spacing)
UpNorthMan
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With the lack of response. I will assume that in my circumstance that I need to have a minimum of 36" of clearance in front of the unit. So no back to back install.
wpns
Solar Joules are catch and release
Why can't you mount them back-to-back and still have 36" clearance in front of both of them? I mean, _HOW_ you are going to do that is an open question, but the only official spec EG4 has posted is 7" side clearance...With the lack of response. I will assume that in my circumstance that I need to have a minimum of 36" of clearance in front of the unit. So no back to back install.
UpNorthMan
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The shed is 72" square for the out side dimensions. I figure, by the time I insulate it. I will loose 6 more inches. Which brings me down to 66" wall width. It's actually one of those aluminum sheds that the railroad uses at crossings for their electrical equipment. All aluminum and critter proof. Very happy with it's build. And I couldn't build something like it for the same price.
My goal is to mount around 60k worth of batteries and 1 or 2 inverters in it. Plus the extras. I can start my own thread relating to my system when I'm really serious. But the question still remains.
What is the minimum clearance requirement for the front face?
As far as I understand, I'm not a electrician. A breaker panel needs a minimum width of 30" (or panel width, which ever is greater) and 36" in front. Does a ESS follow this also???
My goal is to mount around 60k worth of batteries and 1 or 2 inverters in it. Plus the extras. I can start my own thread relating to my system when I'm really serious. But the question still remains.
What is the minimum clearance requirement for the front face?
As far as I understand, I'm not a electrician. A breaker panel needs a minimum width of 30" (or panel width, which ever is greater) and 36" in front. Does a ESS follow this also???
timselectric
If I can do it, you can do it.
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If it will not need maintenance (in place), no maintenance requirements apply.
Since you have to send it out for repairs. (Not going to open it up, where it sits)
And once connected, you don't even need to access the screen.
That said....
If you are getting this inspected, you will have to see what your local AHJ wants you to do.
wpns
Solar Joules are catch and release
Probably depends if you are talking code or just reasonable functionality. In order to get UL 9540 certification (as I understand it), the mfr must pick some combination of spacing, connections, capacity, wiring, etc, etc, etc, and then submit for the certification. They don't get to ask UL "Hey, what's the minimum spacing?", they have to get (or fail) certification for 12" or 7" or 2" side to side (front to back or back to back isn't specified). I suppose if they wanted to they could resubmit for 5" spacing if they failed 2" spacing (or whatever), but that's a lot of money for very little (sales) gain. No-one is looking at two different mfrs and choosing an ESS based on side to side spacing requirements (even if your AHJ doesn't require 12 feet just to be obnoxious and they don't care what the UL9540 requires).
So, while I agree that specifying front to back (or front to front, or back to back, or front clearance, or something else) would make your life easier, it doesn't help the mfr, so they aren't going to bother. And it doesn't help _ME_, because I want to put the PP outdoor wall-mount batteries front-to-back with essentially no clearance, and if they specify something it's harder for me to comply than if they don't specify anything and it's "whatever your AHJ will let you get away with".
Does that help? If it's not specified, you get to do whatever you want (or whatever your AHJ will allow). If it is specified, it's another constraint on what you may do.
wpns
Solar Joules are catch and release
Another thought, if you insulate it you may need to manage heat rejection in warm weather.
Well insulated with an HVAC split?
UpNorthMan
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Thank you both, timseletric and wpns, for your response. I think I understand both of your responses. And I agree that there is no motivation for a battery builder to make the certification test more difficult. It's sounds like a nail biting process as it is. I will plan accordingly.
As far as cooling, a hot summer day may only be 95 degrees. It may have hit 100 degrees, but it's rare. The shed already has provisions for ventilation on the backside. So I'll install a fan with a thermostat for summer. In the winter I'll cap the ventilation with some insulation and turn the heat on. We get mighty cold in the winter.
As far as cooling, a hot summer day may only be 95 degrees. It may have hit 100 degrees, but it's rare. The shed already has provisions for ventilation on the backside. So I'll install a fan with a thermostat for summer. In the winter I'll cap the ventilation with some insulation and turn the heat on. We get mighty cold in the winter.
wpns
Solar Joules are catch and release
From the latest (v1.4) manual for the PP outdoor:
/*
• The battery can be installed against a flat wall, but the weight of the battery should not be fully supported by the wall. To help with this requirement, the battery comes with pre-installed feet that should be used to allow some of the weight of the battery to rest on the ground.
• If the battery is installed against a wall, EG4 insists the wall to be made of non-combustible material. If this is not possible, then the unit MUST have a minimum of 2 in. (50.8mm) of clearance from the wall to prevent heat transfer to the wall surface. Also note that whatever mounting solution that is used to grant the 2 in. clearance from the wall MUST be a non-combustible material.
• If installing on flat ground as a standalone unit, ensure there is proper drainage on the ground surrounding the battery to maintain integrity of the module over time and prevent damage from flooding. If installing against a wall, ensure at least a 12 in. gap on each side of the unit for adequate airflow and operations.
*/
Check the latest PP Indoor manual to see what it says, but there’s clearly enough ambiguity above to throw the final decision on the AHJ.
/*
• The battery can be installed against a flat wall, but the weight of the battery should not be fully supported by the wall. To help with this requirement, the battery comes with pre-installed feet that should be used to allow some of the weight of the battery to rest on the ground.
• If the battery is installed against a wall, EG4 insists the wall to be made of non-combustible material. If this is not possible, then the unit MUST have a minimum of 2 in. (50.8mm) of clearance from the wall to prevent heat transfer to the wall surface. Also note that whatever mounting solution that is used to grant the 2 in. clearance from the wall MUST be a non-combustible material.
• If installing on flat ground as a standalone unit, ensure there is proper drainage on the ground surrounding the battery to maintain integrity of the module over time and prevent damage from flooding. If installing against a wall, ensure at least a 12 in. gap on each side of the unit for adequate airflow and operations.
*/
Check the latest PP Indoor manual to see what it says, but there’s clearly enough ambiguity above to throw the final decision on the AHJ.
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