I have the Nema 14-50 50 amp charger adapter, and am familiar with RV parks. Some of the state parks only have 30 amp service. can I use my 50 to 30 amp adapter with my Tesla? In other words can I plug Tesla’s 1450 adapter into my 30 amp adapter I use with my 50 amp RV when only 30 amps is available in RV parks? Tesla doesn’t sell the correct 30 amp adapter for the plug type, and I’d like to be able to charge when only 30 amps is available in a park.