Grain of Salt, yes ... and that IS the operative word here. (though I don't have a license to do either PV or breaker/panel installs) Consider the following:Boomer23 wrote:The AV electrician just left here. The contractor is Aliso Electric for my area.
General information, word of mouth from the AV guy to my electrician, so take with a grain of salt:
* Mine was only his second assessment. Someone in Newport Coast with a Tesla who's also getting a Leaf was his first appointment this morning.
* EVSE installations will begin October 1
* First Leaf deliveries will be around Dec 21
* My area will be among the first, but he had no real concrete info about San Diego timing
For my electrical installation:
1. My 100A panel will not need to be upgraded. I don't have house air conditioning or a pool or spa and no other large amperage hogs. He was only concerned about physical space on the panel and the physical location of my 30A solar system breakers in terms of heat generation and "nuisance" breaker trips due to heat. We found a 20A breaker that doesn't seem to power anything, so that may be able to be removed and provide extra space.
2. He'll give me a quote for a Southern Cal Edison (SCE) TOU meter, already mentioned by others, that will attach to the grid side of the panel and possibly make things even easier in terms of not disturbing the existing panel. He didn't know about SCE's charges for the additional meter, if any, or any additional monthly charges. He plans to find out in the next few days because he know's he'll be asked about that constantly.
3. My panel is mounted on the exterior wall of my rear bedroom wing and not convenient to the garage. He'll run conduit through an attic and across a patio cover to the garage and then flex conduit inside the garage. The run was estimated at 60 feet, which is longer than the 35 foot run that Nissan has been quoting as standard. I take that to mean extra cost for the materials and labor for the longer run. This may also mean that my City will require a cutoff switch in the garage since the main panel is not in line-of-sight to the EVSE.
. . . . . . . . . . . . . snip
SCE DID AWAY with new TOU applications October of last year. This contracter obviously doesn't even know that you can no longer get it:
http://www.sce.com/residential/rates/sp ... of-use.htm
Therefore yes ... "grain of salt".
Our PV uses TWO 30amp breakers (PV feed in from TWO 4Kw inverters) and even though we have a 225amp panel, we STILL needed to upgrade our low amp main breaker to 200amp. All that to say, "GET a 2ND OPINION" from a PV installer, as to whether you need more than a 100amp panel ... ESPECIALLY if you're installing a 240v charger. PV installers seem to know WAY better when it comes to panel size/main breaker requirements / dynamics of power feeding from multiple directions. Better to find out NOW, than when the city inspecter comes out and calls the AV plan an abortion waiting to happen.
"Grain of Salt"
I've been told by TWO licensed electricians that the charger should use a 40amp breaker because it has the ability to draw about 7% OVER 30 amps. In any event, the very long run of wire you're planning means you'll need a more expensive / larger guage of wire, too.
Lastly, we got a call yeaterday from AV. ANOTHER call. The first call was to CANCEL our assessment date on July 2nd. Reschedueled to the 5th. The 2nd call was to cancel or reschedueled date for July 5. Over the decades, we've watched EV's of all sorts turn to vapor ware . . . . so we know how to be patient. Then Nissan says "Next big anouncement will be June 30" (or earlier). Nothing. Then AV cancels us. Then AV cancels us again. This whole process is predictably going south - and going slow ... so like you said ... grain of salt.