by "Straightsix9904" (Straightsix9904)
Published 11/10/2017 at 14:30
by "Straightsix9904" (Straightsix9904)
Published 11/10/2017 at 14:30
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STARS: 0
Ok, I need electrician help for getting my new electric car to charge at my house; warning: this gets super technical!
Starting out; I have a house that is built in 1953, obviously ungrounded plugs. The plug for the EV has a “Service Ground Check” and will not charge unless a ground is present. Last night I did something admittedly dangerous but temporary and created a bootleg ground to trick it into charging my car.
I want to hook up the charger to 220 using a nema6-20r plug. Can I just buy a 30amp double pole gfci protected breaker and will that satisfy the service ground check? Or will I have to do a homerun and ground the plug at the breaker box? (This will require grounding rods as the box isn’t grounded)
Also, I was thinking of running the 220 off my dryer that is in the garage. The breaker will handle it as it is only a 15 amp charger. The wire running to my dryer is a 3 wire of 2 hot and one neutral. How do I wire he nema6-20r without a ground and a neutral wire?
"For Sweden" (rallybeetle)
11/10/2017 at 14:36, STARS: 9
I vote running a ground wire to a rod. The effort is worth not burning down your house.
"RamblinRover Luxury-Yacht" (ramblininexile)
11/10/2017 at 14:36, STARS: 0
Not an experienced electrician so much as advanced homeowner level knowledge: can you put a grounding rod down at the box, and just run it from the dryer two-hot and neutral? Sounds like what I’d do.
"Little Black Coupe Turned Silver" (littleblackcoupe)
11/10/2017 at 14:39, STARS: 1
I’ve found it best to leave electricity to the professionals... it’s seriously not worth burning your house and/or garage and/or that fancy electric car.
"Wacko" (wacko--)
11/10/2017 at 14:43, STARS: 1
your 3 wire 220 is not a 2 hot an one neutral. It’s 2 hots and one ground,
basically each hot is the others neutral, when they inverse phase
since your 220 is 2 110 circuits.
from the googles:
A typical 110v wiring schematic requires three different wires: hot, neutral, and ground. With 220v wiring, both three and four-wire setups are possible. The red and black wires in 220v setups each carry 110v, and the green wire is the ground.
"RamblinRover Luxury-Yacht" (ramblininexile)
11/10/2017 at 14:43, STARS: 0
Also, is the charger a three-wire two-hot one-ground dealie, or four wires? The neutral available at the dryer wouldn’t get used, I think, since isn’t a 6-20R a two-hot-plus-ground? In that event I wouldn’t worry about whether the neutral is grounded properly in the box or whichever, and just run your two hots and a local ground post.
"Wacko" (wacko--)
11/10/2017 at 14:44, STARS: 2
"OPPOsaurus WRX" (opposaurus)
11/10/2017 at 14:54, STARS: 3
why not just run a new line from the breaker box? Something liek this seems to me like it deserves its own breaker/circuit.
"Wacko" (wacko--)
11/10/2017 at 14:55, STARS: 1
I would recommend it’s own dedicated circuit from the breaker box, technically you can unplug the dryer and piggy bank off of it. But own circuit is a better/safer and permanent solution. It probably suggests using a GFCI breaker.
I’m guessing your breaker box is grounded to the houses Municipal metal plumbing like many old houses are. all my replies being said, since you re asking these questions you should get it done by a certified electrician.
"diplodicus" (diplodicus)
11/10/2017 at 15:27, STARS: 0
What charger are you using? Some quick googling for i3 chargers a bmwblog comes up showing a few different options for 240v and all draw at least 30a.
"Tekamul" (tekamulburner)
11/10/2017 at 15:31, STARS: 0
You need to run a new line from the box.
And if you don’t have a grounding rod, you should add one, because home fires suck.
"Officer Jim Lahey is not a real cop" (officer-jim-lahey)
11/10/2017 at 15:36, STARS: 2
Plus, you don’t want your insurance company pointing to unpermitted/noncompliant electrical work as the cause of said house fire.
"Straightsix9904" (Straightsix9904)
11/10/2017 at 15:37, STARS: 0
It is the BMW branded “original accessory”. But it is a rebadged Turbocord Dual 240/120v EV Charger
"diplodicus" (diplodicus)
11/10/2017 at 15:52, STARS: 0
I’d return it if you can and get one of these http://www.bmwblog.com/2014/09/24/installing-level-2-charger-electric-car/
There’s a bosch that is only 100$ more but double the current.
"Straightsix9904" (Straightsix9904)
11/11/2017 at 08:00, STARS: 0
It came in the trunk of my used car. I eventually want to get a juice box to charge at the full 7.8 amps the BMW is capable of.