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I am installing a new 240v receptacle in the garage to charge my electric vehicle. The charger requires a 20 amp breaker and will pull 16 amps. I plan to run 30' of 12/2 UF-B wire beneath the floor in the 3' crawl space to the outside wall electrical panel. Question - must the ground wire be insulated or can it be bare?

  • Which type of 240V receptacle is this? NEMA 6? – ThreePhaseEel Mar 1 '17 at 1:55
  • Some chargers require 4 wire. The neutral is insulated and the equipment ground can be bare. What is the model of the charger? – Ed Beal Mar 1 '17 at 4:33
  • EVSE = Chargers4evs model (see Amazon.com) while receptacle is NEMA 6-20 – John Dyson Mar 1 '17 at 4:42
  • Also don't pay $26 for a 6-20R receptacle. Sometimes Amazon's prices are cray. – Harper Mar 1 '17 at 16:55
  • I caught that Amazon bazaar price for the receptacle also. Home Depot sells the same one for $5.28. Leviton 20 Amp Double Pole Single Outlet, White Model # R52-05821-0WS – John Dyson Mar 1 '17 at 18:41
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You can use standard 12-2 with ground on this outlet. The equipment ground wire is not individually covered.

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