I do mostly residential and light commercial work, so I'm not real experienced with larger commercial services and I'd like for the more experienced guys to double checked my calc. here:
1200A, 480/277v, 4-Wire, 3-Phase Service
Service will have 2, 600 Amp Services Discos
Each Disco I'm going to have Paralleled 3" RMC's
In Each Parallel I figured 4, 350mcm THHN derated @ 80%= 560 Amps allowing for larger breaker/fuse size of 600 Amp (using Copper)
I figured Electrode Conductor of 3/0 Copper
Then Service Feeder to Main Distribution Panel
I figured 4, Paralleled 350 Thhn's with 3/0 Copper Ground or am I allowed to use a
1awg copper ground for 600amps?
I figured 3" RMC for both runs
I want to make sure I'm right, before I price this out,
Thanks in advance for any help with this!
1200A, 480/277v, 4-Wire, 3-Phase Service
Service will have 2, 600 Amp Services Discos
Each Disco I'm going to have Paralleled 3" RMC's
In Each Parallel I figured 4, 350mcm THHN derated @ 80%= 560 Amps allowing for larger breaker/fuse size of 600 Amp (using Copper)
I figured Electrode Conductor of 3/0 Copper
Then Service Feeder to Main Distribution Panel
I figured 4, Paralleled 350 Thhn's with 3/0 Copper Ground or am I allowed to use a
1awg copper ground for 600amps?
I figured 3" RMC for both runs
I want to make sure I'm right, before I price this out,
Thanks in advance for any help with this!