I am having the same exact problem with my K&W BC-20, but at 96 volts and 12 amps. I actually burned out the charging inlet on my ev so I am upgrading to a 30 amp socket setup. What is going on is that the charger does not have PFC so it sucks lots off amps from the wall and the 20 amp connections aren't rate for continuous use. The K&W set at 15A @ 108 volts will draw close to 19-20 AMPs
I couldn't get the 30 AMP setup today, so I went to ACE and got a 20 AMP setup to replace my 15 AMP plugs.
I couldn't get the 30 AMP setup today, so I went to ACE and got a 20 AMP setup to replace my 15 AMP plugs.