To my knowledge, this was a problem with the aluminum wire alloy used in the 60's and 70's, AA-1350, but is not a significant problem with the modern aluminum alloy AA-8000 when used with terminals rated for aluminum. So as long as the EVSE terminals are rated for aluminum, I wouldn't hesitate to use aluminum wire.
Most modern homes use 200A service I believe. I just installed a new 200A service at my house although I probably rarely use more than 40A at any one time. The main reason I did that upgrade is so that my (yet to be installed) solar system won't be limited by the service entry equipment.
I didn't know they did aluminum still for residential...nlspace wrote: ↑Sun Jan 19, 2020 9:23 pmIt's not cheaper if your house catches on fire.
Aluminum wire creeps under the pressure of the screw terminals, which results in looseness of the electrical connection, then arcing across the gap occurs and generates heat in the junction.
Special grease and fittings are used with aluminum wire in an attempt to mitigate this, but periodic inspection and re-tightening of the bolts and screws are needed. Aluminum may be used for the transformer pole-to-house wiring, but usually crimp lugs are used to make those junctions.
Use copper and sleep easy, just consider the cost difference as cheap fire insurance.
AFAIK still 27.5 amps. I hear 7.7kw mentioned occasionally, but again, AFAIK, it hasn't been implemented. They are still relying on DCFC speeds, ironically.
Smart move.Kind of leaning to 50 amp breaker, 60 amp capable wire, and 14-50, so that I don't need to worry about adapters, then the wire is there if I ever need it with a new breaker.
That's a lot of wall switchesFlyct wrote: ↑Mon Jan 20, 2020 7:29 pmSmart move.Kind of leaning to 50 amp breaker, 60 amp capable wire, and 14-50, so that I don't need to worry about adapters, then the wire is there if I ever need it with a new breaker.
I have an older Schneider Eaton hard wired EVSE at my house since 2015. Its wired with #6 THHN which is good to 65 amps, but it’s protected with a 40 amp breaker since the ESEV draws max 30 amps. It’s served me very well for about 4 years now charging my 2015, then 2018 leafs, and now my 2019 Leaf plus. It puts in 25 miles of range each hour the car is being charged.
At the barn/shed at our country vacation house I also ran #6 in flex conduit to a 14-50R receptacle. That is protected with a 40 amp breaker. I bought a spare Nissan 120/240 ESEV plugged on eBay for about $250 and leave it there all the time. I turn that breaker on only when charging. I may be using that receptacle for my RV at times.
There’s another one listed right now on eBay https://www.ebay.com/itm/2019-Nissan-Le ... 4602333350
Picture of the Hard wired Eaton in garage at house. It’s right below the CB panel.
Here’s the one in the barn at country vacation house as I was wiring it. If you look closely it’s connected to a 40 amp breaker in the barn 60 amp sub-panel.