We have 6-sets of 600mcm that are shown to terminate in an existing utility owned service vault(its more like a room with controlled access)There is an existing service that is already in this vault,the wiring method used was a wireway that dead ended and from there they supprted the conductors(exposed) with a piece of uni-strut as they went into the utility cabinet.Our situation does not allow us to use conduit it would be next to impossible,we were thinking as an alternative method,- using wireway with a transition to cable tray,however looking @ 392.3 (a) uses permitted,I dont see where we can install our "XHHW" conductors on open tray.We have inquired the local wiring inspector to pay us a visit,however I like to have a game plan to present to him,instead of just asking how-any thoughts?thanks.
Service Conductors
- Thread starter jflynn
- Start date
- Status
- Location
- Massachusetts
Of course I code be wrong but that room sounds like it is under the NESC and not the NEC. I would consult the utility about what they want. In the past I have built strut racks for the cables in rooms like this.
charlie
Senior Member
- Location
- Indianapolis
Bob is exactly right . . . as usual. 
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Sickening, ain't it?charlie said:Bob is exactly right . . . as usual.
rookie4now
Senior Member
charlie said:Bob is exactly right . . . as usual.
Responses based on the 2008 NEC, unless stated otherwise.
Charlie,
Glad to see that the NEC has finally recognized Bob
- Status