The AHJ generally enforces the code, which specifically allows loading a
busbar with 120% of its rating when backfeeding solar into it. So it
depends on what you define as "correct". Following the code, or following
the laws of physics.I hate to admit it, but there are many things in
the
My AHJ nor my brothers did not enforce it so we've had a different experience.
On Sunday, March 10, 2024 at 10:45:01 PM PDT, (-Phil-)
wrote:
The NEC definitely accounts for this since 2011, and I know from experience
AHJs enforce it. (705.12 D 2)
There are 2 ways:1. Derate:
The NEC definitely accounts for this since 2011, and I know from experience
AHJs enforce it. (705.12 D 2)
There are 2 ways:
1. Derate: Replace the main with a lower amperage, or:
2. End Feed: Install the solar breaker at the opposite end of the busbars
and put a sign that states: "SOLAR PV
I'm going to chime in with a point. Probably plenty all ready know it, but
maybe some don't.
Virtually all home solar is actually kind of technically violating some
electrical rules. The reason is thatbreakers were not intended to be used to
back feed power, but that is the easiest way, so
Yeah, NEC requires a GFCI for all outdoor outlets. If you hardwire an EVSE
in, you don't need it, as the EVSE contains its own.
A common use for 15-50's outdoor is powering RV shore power.
On Sun, Mar 10, 2024 at 7:04 PM Bill Dube via EV wrote:
> The NEC has changed through the years
The NEC has changed through the years regarding GFCI protection.
120vac outdoor outlets were required to be GFCI protected since ~1972.
In the '80s when I worked as an electrician, outdoor 240 volt NEMA 14-50
outlets were not required to be GFCI protected, but when used to power a
hot tub, or
/mh
>
> REEVA Demo: http://youtu.be/4kqWn2H-rA0
>
> Fincastle Solar Weather Station
> <https://www.weatherlink.com/embeddablePage/show/a88920376f864ecabaed843dd8975b8d/signature>
>
>
>
>
>
>
>
> *From:* (-Phil-)
> *Sent:* Sunday, March 10, 2024 6:07 PM
> *To:
07 PM
To: Electric Vehicle Discussion List
Cc: Mark Hanson
Subject: Re: [EVDL] Adding a 14/50 EV courtesy outlet to a solar array
Yes, you'd need a subpanel, as any outlets you add could get 50A from the
breaker PLUS whatever your solar is generating. The 120v outlet without a
proper breake
I believe the way to do it codewise would be to add a subpanel at the base
of the solar array, with a breaker in it feeding the dedicated solar
circuit (the inverter or inverters -- often I end up with multiple
inverters to get to 50A anyway unless using a single 11.4kW, so am adding
an inverter
Yes, you'd need a subpanel, as any outlets you add could get 50A from the
breaker PLUS whatever your solar is generating. The 120v outlet without a
proper breaker to limit current is super dangerous, as you'll definitely
get 50A even at night, and even more during the day!
On Sun, Mar 10, 2024
In our area an EV charging station 240 v outlet must be GFCI protected and
those breakers are expensive. We've been recommending hard wired units and
try to convince the client to provide that and then we install it when we
are onsite.
On Sun, Mar 10, 2024 at 2:56 PM Mark Hanson via EV
wrote:
>
> Hi Folks
> I was reading in Solar Power World where a California solar installer adds a
> 14/50 240Vac 50A outlet on the same solar array 50a circuit (for EV
> charging). We have added 120vac courtesy outlets on our solar array and pass
> inspection even though NEC says solar must be on
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