whisky-dave wrote:

Andy Burns wrote:

The 3 hours at 40+ Amps

what makes you think it's 40 amps + ?

I thought that's where we started weeks ago, that you expected to be
able to trip a 32A breaker with the heaters, and I gave you the 2.7
hours figure?

As John has calculated, if the supply is so "soft" that it drops to
202V, it might only be able to supply 140A, so a short circuit could
last long enough to cause serious damage ...