David Kerzel wrote:
NEC 625 requires level 2 EVSE to be hard wired. 625 is written to set
standards for designing a EVSE and for commercial units. The EVSE for home
use is something the consumer buys and gets a professional to install.
Commercial EVSE units, assembled tested ready to go, must be UL listed and
installed per there instructions to comply with the NEC.
David, I have a copy of California's 2010 NEC Article 625 (the latest I
have access to). I cannot find anything in it that requires UL listing.
All it says is "listed". Even then, it only specifies that various
components (like the cord, or connector) be "listed" -- not the EVSE as
a whole.
"Listing" only means that an independent lab has tested the part or
product, to verify that it actually meets standards. UL is only one of
many independent labs. For San Jose to require "UL" testing is akin to
requiring only GE light bulbs, or only Ford automobiles.
In the entire NEC (1000+ pages), I cannot find one single instance of a
UL requirement for anything.
If San Jose really did mandate UL listing, it should be grounds for the
other testing laboratories (ETL etc.) to sue them for restraint of trade!
When the UL listed EVSE plugs in to a receptacle it is outside of the local
electrical inspection in most places.
That is the important point! The NEC does *not* have the right to
regulate anything plugged into an AC receptacle. They can only regulate
the wiring up to that receptacle.
An EVSE is not a charger; it is just a glorified expensive AC
receptacle. In the current situation, companies are fighting to
monopolize EV charging with these receptacles. Many have tried this in
the past, and failed. Their "standard" was abandoned, leaving any EV
owner who relied on it for charging to be out of luck.
That's why I think it is vital for EV owners to have a charging cord
that plugs into a traditional *standard* AC receptacle (NEMA 5-15, 14-50
etc.) -- not a special one for EVs only. Luckily, this is nothing but a
cord with a standard plug on one end, and the special J1772 (or
whatever) on the other end.
--
An engineer can do for a nickel what any damn fool can do for a dollar.
-- Henry Ford
--
Lee A. Hart, http://www.sunrise-ev.com/LeesEVs.htm
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