Hi guys...I'm in a debate about the size of a service lateral and the main disconnects that feed a single family dwelling.
This is how I see it...
Calculated load: 260 amps
Service lateral conductors: 2-500MCM AL and 1-350MCM AL in a 3" pvc conduit from pole to 320 amp residential meter socket.(table 310.15(B)(6) allows 500MCM at 350amps)
Then from the 320 meter I'll run 2-2" PVC conduits with 2-4/0 AL and 1-2/0 AL in each to 2-200amp main breaker panels ajacent to each other in the dwelling basement.
The other side says:
Since 500 MCM AL is only rated for 350 amps then I can NOT use 2-200amp main breaker panels...because that would require 400 amp rated service lateral conductors.
They say the panels can only be rated at 150amp each.
I said the service lateral conductors need only be rated for the load to be served.
I said I could put 6-100amp main panels in the house if I wanted and it would be code compliant.
Any comments??
thanx,
shortcircuit
