johnlocke wrote: ↑
Sat Feb 01, 2020 5:22 pm
Tsiah wrote: ↑
Fri Jan 31, 2020 11:40 pm
mxp wrote: ↑
Sun Jan 14, 2018 10:05 pm
Why is the NEMA 14-50P plug chosen?
My guess is because it's an RV park outlet. You theoretically could charge the car just about anywhere in the country.
It's nearly impossible to find a 40 amp plug and a 30 amp plug would be out of compliance for any charge period for more than 3 hours (by code you have to de-rate the plug 20% if it's in continuous use for more than 3 hours). That leaves the 14-50 plug as the obvious choice. The big plus is that they are as common as dirt and used in RV parks and campsites all the time. Most homes won't have one unless there's an electric range installed. It's becoming more common in new construction to include one in the garage for future EV use. Anything over 50 amps is normally hardwired to a breaker.
I'm guessing mxp might just be wondering why as EVs don't need a neutral, why the Leaf EVSE didn't just come with a 6-50 plug
and to that I'd agree it's probably because the 14-50 standard is much more common than the 6-50 standard. Tesla also standardized on the 14-50 very early on so it's kind of a standard for higher-powered EVSEs.
I really like the L14-30 plug or even L6-30 standard as it's not nearly as bulky as the range plug 14-50 and it's a locking plug but being a 30a standard it's not really robust enough to supply the 27.5a some Leafs can pull continuously, for that you need a 40 or 50a plug and since a 40a plug is nonstandard, 50a was the standard used.
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a