said by alkizmo:Up here in quebec you rarely if ever see a 400 amp commercial install, once you get into that kind of power demand you usually jump straight to a 3 phase service. most strip malls and the like that have individual services for each storefront will normally only have a 200 amp connection (light the lights run the cash register) and heat with gas. You start seeing the 3 phase at the bigger service stations, restaurants and car dealers. said by telco_mtl:
Interesting, the 400 amp residential installs we usually see in these parts have a twin mast, sealed remote meter box feeding a single 400 amp switch that in turn feeds a bus duct that 2-3 breaker panels come off of, interesting to see how its done in other parts.
Commercial installations though have single mast with single meter.
It's probably just a "code" thing that we can't have single mast 400A in residential installations in Quebec. Maybe it's a run lenght thing.