commercial 200 amp sizing

[Stevenfyeager]

I do almost entirely residential, so it's been a while for commercial. For a commercial 200 amp service for a local auto mechanic, I'm planning on using (3) 250 AL service entrance conductors in a 2 " PVC riser, and the point of attachment is the building. (Saving some money instead of using 3/0 Cu) Is it ok to use pvc pipe between the meter and panel instead of metal conduit? (opposite each other on the concrete wall) EGC #4 Cu. One 5/8 ground rod or two? Indiana. Do these sound ok? He presently has an old 60 amp service. Thank you.

 

[ActionDave]

PVC is fine. 250 Al and 4Cu egc good. Two ground rods if that's all you have to choose from,,,,, no building steel present?

 

[Stevenfyeager]

PVC is fine. 250 Al and 4Cu egc good. Two ground rods if that's all you have to choose from,,,,, no building steel present?

Thanks, I will check for building steel. He is adding on to an old concrete block wall and wood framed roof building, so there may not be any steel. I will try to ask the local inspector, too. I'm assuming I will also need to run a # 4 Cu to a water line and gas line (if there is one.) His furnace is a used motor oil type.

 

[kwired]

4/0 aluminum can be protected by 200 amp breaker, but calculated load can not be more then 180 amps.

1/2 inch ground rod is acceptable if it is listed, unless you can prove the first rod has a resistance of 25 ohms or less you will need a second rod.

Gas line only needs bonded by the EGC of the circuit that may energize it. But if you happen to have CSST gas piping, that opens a can of worms for bonding requirements - and those are specific to the particular product being used more so then an across the board bonding requirement.