kmcdonal
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- Nissan 350Z, Subaru WRX
Ah, now that I look at it more closely, the electrician didn't install the 14-50 even though that is what is on the invoice. He did 6-50r. Sounds like I need to get him to swap that out. Thanks for the help everyone.for those of you playing along at home - here is a picture of a NEMA 14-50R - the is the "receptacle" your electrician will install in your garage - and if you find a hotel or campground with RV hook ups you're likely to find one of these receptacles.
NEMA 14-50 is 240 volts @ 50 amps - single phase AC power - EV charging can only use 80% of the rated load for code/safety reasons - so you are allowed to draw 40 amps on this type of circuit - the power rating is therefore the following match
watts = volts * amps
240 volts * 40 amps = 9,600 watts
kiloWatts is a measurement of 1000 watts
so 9,600 watts is 9.5 kiloWatts (kW)
do this for one hour and you get 9.6 kiloWattHours (kWh)
your Taycan battery is a 93 kWh battery - but only 83.4 kWh is "unlocked" for your use by Porsche
so to charge your Taycan from empty you need to shove approximately 84 kWh into the battery to take it from 0% to 100%
if you plugged into a RV outlet - time to charger is therefore
84 kWh / 9.6 kW = 8.75 hours - round up for charging overhead and loss - and 9-10 hours of charge time from a NEMA 14-50.
the following receptacle types are all 50 amp circuits and identical electrically for the most part:
NEMA 14-50
NEMA 10-50
NEMA 6-50
NEMA SS2-50 - marine shore power connector & concert venues - this is essentially the locking version of the NEMA 14-50 plug and more appropriate for "outdoor" use…
these are all just different "shape" plugs designed for 240 volt 50 amp electrical circuits - your EVSE can charge from any of them if you have an adapter that converts 14-50 to a 6-50 - they are electrically identical from the EVSE's perspective, and the only difference is the actual shape/layout of the metal connectors
electricity is all the same!
but fundamentally the plug is just a pattern for:
120 volt hot "leg" of the connection - left120 volt hot "leg" of the connection - right120 volt neural "leg" of the connection - bottomground connection - top