[RE-wrenches] Flammable Vapor Ignition Resistant

[Jason Szumlanski]

That's a first for me. The Enphase battery is sealed, but I don't know if
that qualifies as sealed against vapor.

I'd reach out to Enphase to get some guidance on that. It's always
something with these AHJs.

Jason Szumlanski
Principal Solar Designer | Florida Solar Design Group
NABCEP Certified Solar Professional (PVIP)
Florida State Certified Solar Contractor CVC56956
Florida Certified Electrical Contractor EC13013208


On Tue, Sep 9, 2025 at 4:13 PM Zeke Yewdall via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> My interpretation of this is that he wants to make sure that the battery
> cannot ignite a flammable vapor cloud from gasoline being spilled in
> the garage.  If he's saying that no electrical equipment that might create
> a spark (such as with a relay or switch or circuit breaker) can be below
> 18", that may be the case.   I might be completely off base here, but I
> don't think it has anything to do with it being a battery really, but just
> a piece of electrical equipment that might have relays or sparking things
> inside?  Maybe?  In which case... does the 5p have any relays or
> contactors, or is it's BMS all solid state?  And second question would be
> can you document that.
>
> Zeke
>
> ---------------------------------
> Seeking your suggestions and direction. My AHJ - after acknowledging that
> the Enphase 5p battery has a floor mount option - now insists that it must
> be 18-inches above the garage floor unless I can produce something that
> says it is "Flammable Vapor Ignition Resistant."
>
> We all know there is no open flame from an ESS and I know the 9540A
> depicts a battery at 6-inches.
>
> Anybody run into this and have suggestions on what I might show back to
> the AHJ?
>
> Howard "Scot" Arey
> Owner, Solar CenTex
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