First, I am NOT an electrician but am creating specs for a floor plan and framing and I need to know what the requirements are for this electrical situation so I can figure out how to frame everything so that an appropriate path for the feeder wires will exist. We will be hiring an electrician but it takes a few days to a few weeks to get an electrician in around here and the framing is going up TODAY and tomorrow. Your help is appreciated.
This is a commercial setting: warehouse. 208Y/120V/200A service comes into meter, then to main 200A fused safety switch, then to a distribution panel that feeds existing 150A panel via breaker. Will be adding a 2nd breaker to feed new 3 phase 200A panel. Run is only about 20' from distribution panel to new one, though one wood-framed wall minimum (maybe 2, depending on what I decide), and takes 2 right angle turns.
Is AL 4/0-4/0-4/0-4/0 with 2/0 bare ground from breaker to new panel what is required?
One option that might fit (structurally) is SER in conduit mounted on wall for about 3', then 90 deg turn into wall NOT in conduit for about 9', then 90 deg turn back out of wall and into conduit along a wall for about 6'. I need to know my options, can SER be used and run in commercial warehouse setting:
-Stapled to the walls?
-Stapled/attached to the bottom of joists?
-Inside walls? If yes, what size hole in the studs is required?
-Inside conduit? If yes, is 2" conduit OK?
-And is it normal to strip the covering off of the lengths of the cable that will be inside conduit (assuming it switches between inside conduit and out)?
This is a commercial setting: warehouse. 208Y/120V/200A service comes into meter, then to main 200A fused safety switch, then to a distribution panel that feeds existing 150A panel via breaker. Will be adding a 2nd breaker to feed new 3 phase 200A panel. Run is only about 20' from distribution panel to new one, though one wood-framed wall minimum (maybe 2, depending on what I decide), and takes 2 right angle turns.
Is AL 4/0-4/0-4/0-4/0 with 2/0 bare ground from breaker to new panel what is required?
One option that might fit (structurally) is SER in conduit mounted on wall for about 3', then 90 deg turn into wall NOT in conduit for about 9', then 90 deg turn back out of wall and into conduit along a wall for about 6'. I need to know my options, can SER be used and run in commercial warehouse setting:
-Stapled to the walls?
-Stapled/attached to the bottom of joists?
-Inside walls? If yes, what size hole in the studs is required?
-Inside conduit? If yes, is 2" conduit OK?
-And is it normal to strip the covering off of the lengths of the cable that will be inside conduit (assuming it switches between inside conduit and out)?
