I've recently took over a job started by someone else. A 4500 sq single family with a 400A Underground Meter pedestal with Main CB's.
The power pole is 120' away and power is currently temporarily provided by a pre-existing overhead drop that's nailed to the house and tucks in under the meter.
A 4" PVC was placed in the ground by the GC to run Conductors underground from the pole to the meter.
"NOW my question is does Article 310.15 (6) apply to the cable leading from the pole to the meter. I want to use 500mcm triplex aluminum I don't see where in the code book says it's rated for 400A but at the supply house the wire says suitable for 400A but I sort of don't believe it. Otherwise I'm using 500mcm copper.
