Could the electricians in the forum please advise me on this situation? My parking space in the underground parking garage of my condominium happens to be very close to a 120V outlet. Unfortunately, it is a 2-hole female outlet and the Kona charging plug that comes with the car has a 3-prong fitting. Would it be safe for me to use a small, plastic adapter with 2-prongs on one side and a 3-hole fitting on the other side---plugging this adapter into the wall and before a household extension cord (3-prong & 3-hole) and then my Level 3 Kona charging unit? If that is not recommended, how can I charge my car from a 2-hole wall outlet using my stock Level 3 charging unit?