Our outlets are 120V 15Amp NEMA 5-15P. My question is: Is an adapter plug a bad ... If the UPS has a 20a plug, you really need a 20a circuit (i.e., a 5-20 receptacle). If you have a 5-15 recep ...

The 20-foot-long Tesla mobile cord maxes out at the same 30 amps and comes with the same connectors. Tesla, though, also sells an adapter bundle to fit seven additional plug types, from NEMA 5-20 ...