I do occasional maintenance for a local hotel. 100A 3 phase incomer.
I was there this week and noticed they had had 4 EV chargers fitted in their car park. Now, the cable supplying the DB they have fitted, was fitted by me 2 years ago. They have taken out a newish Hager DB to fit a Fusebox one in its place. No idea why they'd do that, as it would have been easy to buy new Hager RCBOs and surge devices. Anyway, the cable is 10mm 4 core. How on earth do they run 4 chargers off that, as well as the (minor) loads for the bar area? Is it usual to have load protection/limitation on such an array of chargers?
And on a similar point, the total load required by the hotel isnt great, electric cooking, partial panel heating, but adding 4 chargers seems to be getting toward the limit of the incoming supply. Is this negated by the load limitation devices (if fitted)?
