NEMA 14-50 installed

[aspec818]

just got a NEMA 14-50 installed right under my breaker box. Cost would’ve been the same for the hpwc but I didn’t need the extra power. It was $500 which seems to be on the lower end in the Bay Area. Seems to charge at around 26-29 mi/hr at 32amps.

 

[vkana]

is it on 40A breaker? 50A breaker should give you 50*0.8 = 40amps

 

[AlanSubie4Life]

is it on 40A breaker? 50A breaker should give you 50*0.8 = 40amps

Not with the UMC that ships with the Model 3 it won't. (UMC Limit is 32A.)

 

[vkana]

Oh yeah, but Mobile Connector says 30mph for model 3

 

[AlanSubie4Life]

@vkana, the OP's climate control is on and the interior is warmer than the outside temperature (67 setpoint vs. 58 outside) so that is slowing the charge rate. It's using about 700 watts, to be specific.

Showing work:
Tesla assumptions:
310 miles from 75kWh according to Tesla: 242Wh/mi
Assuming Tesla's numbers are exactly correct: 30 mi/hr means: 30mi/hr*242Wh/mi = 7260W out of the charger internal to the car assuming 32A input from the UMC.

-----
32A @ 240V is 7680W available.

This Implies charger efficiency is 7260W/7680 = 94.5%

OP is getting 27mi/hr which is 6534W into the pack.

7260W-6534W = 726W

 

[Needsdecaf]

Yes, in that picture, the charging rate is certainly diminished by the fact that the climate is on and blowing heat. I have seen my charging rate decrease (and therefore the estimated charging completion time increase) by 30-40% as soon as I open the door and the heat kicks on. It's quite dramatic.

Also....$500 for that install? Makes me glad I don't live in the Bay area. I remember listening to Jason Camissa on the The Smoking Tire Podcast talking about Marin County area auto repair rates being ridiculously expensive as well, even for "normal" cars. Makes me appreciate living in Texas!

 

[steve in socal]

just got a NEMA 14-50 installed right under my breaker box. Cost would’ve been the same for the hpwc but I didn’t need the extra power. It was $500 which seems to be on the lower end in the Bay Area. Seems to charge at around 26-29 mi/hr at 32amps.

That is a great price for the Bay Area. Could you post the name of the contractor?

 

[fr100]

just got a NEMA 14-50 installed right under my breaker box. Cost would’ve been the same for the hpwc but I didn’t need the extra power. It was $500 which seems to be on the lower end in the Bay Area. Seems to charge at around 26-29 mi/hr at 32amps.

Is that based on $900/hr labor?

 

[aspec818]

That is a great price for the Bay Area. Could you post the name of the contractor?

[email protected]
Have done a bunch of HPWC installs. Tell him Alvin sent you.