Lots of variability on installation cost depending on the extent of the work needing done. What does the quote all include? Will make big difference if just need a short run and add plug versus having to trench a new line and add a new panel, etc..
Zaphod,
Here are the details I obtained from the Tesla recommended guy, I explicitly asked him the gauge of wire, extra cost (if any) for an outlet a bit futher away from my panel (my panel is in the attached garage and is very close to where I will park the M3, the other M3 will be next to this one, I measured about 8.5 ft away, but that's along the ground distance, so will likely need 10 ft counting the sag from the M3 charger location down to the ground and back up to the HPWC/14-50 outlet)
$650 for 14-50 outlet:
using #8 for live and #6 gauge wire for ground
within 5 feet of panel
on 60 amps circuit on the panel
$800 for HPWC:
using #4 gauge for live and #6 for ground
within 5 ft of panel
on 90 amps circuit on the panel
Extra $/ft above 5 ft = $7.5/ft
He said it will take 4-6 hours for install and next day testing. I think he said they will do load calculation as well.
I didn't ask the other electrician (from Angies list) on gauge etc, his quote was $450 for HPWC hard wired in and $475 for 14-50 outlet.
It didn't sound like he would do load calc, but I did ask him if I can assume that if there are empty breaker slots in the panel that there is capacity? My panel pic attached.
KG