Again, if the HPWC draws more than 60amps, up to 100 amps, it won’t matter, the line is build to handle 100amps. House wiring can handle. The HPWC, is fried, that’s why they have a fuse in the HPWC. A 60Amp, breaker won’t protect a 48amp HPWC. The voltage has never changed, is still 240v.