Future proof garage electric supply for electric car
Future proof garage electric supply for electric car
Author
Discussion

cerbfan

Original Poster:

1,199 posts

257 months

Saturday 19th October 2013
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Currently at first fix with my extension and want to put in suitable cabling to future proof the garage for an electric car (or 2). Anyone any idea how many amps I should allow for per charging point for say a Tesla Model S? I've tried to look on the internet but it all seems a bit confusing.

cptsideways

13,887 posts

282 months

Saturday 19th October 2013
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Get on the Renault electric site, think it tells you there.

McWigglebum4th

32,414 posts

234 months

Saturday 19th October 2013
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The most you can get on a domestic supply is 32amps

So the answer is 32 amps


Oh and you are a hippy

cptsideways

13,887 posts

282 months

Saturday 19th October 2013
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Also as your at it, stick some solar panels on the roof, its free motoring then

davepoth

29,395 posts

229 months

Saturday 19th October 2013
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The Tesla "supercharger" units that they're installing in the US are 250 amp at 400V, approximately 90KWh. That's enough to fully charge the model S in around an hour and would be good for 250 miles or so.

cerbfan

Original Poster:

1,199 posts

257 months

Saturday 19th October 2013
quotequote all
I'll just get a 'my other cars a Cerbera' sticker to ensure I don't get branded a hippy but those Model S are impressive and cheap to run from a tax point of view.

As for 32A maximum that's not the case is it as my hob needs a 50 Amp supply.

amstrange1

617 posts

206 months

Saturday 19th October 2013
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From the Tesla website:

"11 kW capable on-board charger with the following input compatibility: 85-265 V, 45-65 Hz, 1 phase 40A or 3 phase 16A (Optional 22 kW capable Twin Chargers increases three phase input to 32A and single phase input compatibility to 80A)".

So 40A single phase would be the cheapest for you, or get a 16A 3-phase supply put in there.

cerbfan

Original Poster:

1,199 posts

257 months

Wednesday 23rd October 2013
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Just a quick update to this, I've decided to just run 16mm T&E into the garage as this should be ok for a 60A breaker with the 50A setting on the Tesla charger which seems to be as much as you can go without getting in 3 phase in any case.

adamfawsitt

558 posts

243 months

Wednesday 23rd October 2013
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cerbfan said:
Just a quick update to this, I've decided to just run 16mm T&E into the garage as this should be ok for a 60A breaker with the 50A setting on the Tesla charger which seems to be as much as you can go without getting in 3 phase in any case.
Enjoy the Model S (I ordered mine too!) when it comes - worth speccing an (optional) second charger if you are looking for rapid home charges - 3 phase 32A supply will fully recharge in 4 hours.

McWigglebum4th

32,414 posts

234 months

Wednesday 23rd October 2013
quotequote all
adamfawsitt said:
cerbfan said:
Just a quick update to this, I've decided to just run 16mm T&E into the garage as this should be ok for a 60A breaker with the 50A setting on the Tesla charger which seems to be as much as you can go without getting in 3 phase in any case.
Enjoy the Model S (I ordered mine too!) when it comes - worth speccing an (optional) second charger if you are looking for rapid home charges - 3 phase 32A supply will fully recharge in 4 hours.
I think this man speaks sense and it would be HIGHLY advisable to get 3 phase installed as then the garage is completely future proofed


And this advice has nothing to do with it lets you buy cheap industrial machinery

CrutyRammers

13,735 posts

228 months

Wednesday 23rd October 2013
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McWigglebum4th said:
And this advice has nothing to do with it lets you buy cheap industrial machinery
hehe True - I soon wished I'd put it in mine when I started looking for lathes and things