Article 230 - Services; Centralized UPS Feeding Power to 2 separate building sections

Status
Not open for further replies.
A

Anthony Giordano

Member
Location
Oakland, NJ
Hello all, I have an interesting scenario that I would like some guidance and/or clarification on.

We have submitted a proposal for a new project for an existing client in Parsippany, NJ where the building is broken up into two sections, a "Main Building" & "East Wing", where each is served by a separate utility service and has it's own electrical service room, however the two sections are connected and are separated with a demising wall. The East Building contains a Data Center with an existing 200KVA UPS, and the Main Building contains a Network Center with an existing 300KVA UPS. Our new project would be providing a centralized redundant UPS in one of the two locations, served by one existing utility service, which would then have the requirement to feed power to the other location on the other side of the demising wall.

I have read through Section 230.3 One Building or Structure Not To Supplied Through Another, however there are different requirements and stipulations, but I believe that they only pertain to main service conductors and NOT feeders or branch circuit conductors.

1. Would providing power feeders to the other "building section" be a violation of the NEC or of any Fire Codes?
2. Or if we were to have the EPO (Emergency Power Off) wired to shunt the UPS off from either their Data Center in the East Wing Building or the Network Center in their Main Building, would we be O.K. according to building codes?

If anyone can shed further light on this topic, it would be greatly appreciated.

Thanks! Anthony G.
 
ramsy said:
See 210.5(C)(1) Branch Circuits Supplied from More Than One Nominal Voltage System.
Click to expand...

Ramsy,

Thanks for your reply. Here is the article that you referenced:
"(1) Branch Circuits Supplied from More Than One Nominal Voltage System.
Where the premises wiring system has branch circuits supplied from more than one nominal voltage system, each ungrounded conductor of a branch circuit shall be identified by phase or line and system at all termination, connection, and splice points in compliance with 210.5(C)(1)(a) and (b).

(a) Means of Identification.
The means of identification shall be permitted to be by separate color coding, marking tape, tagging, or other approved means.

(b) Posting of Identification Means.
The method utilized for conductors originating within each branch-circuit panelboard or similar branch-circuit distribution equipment shall be documented in a manner that is readily available or shall be permanently posted at each branch-circuitpanelboard or similar branch-circuit distribution equipment."

So this article talks about Means of Identification, but I am still unclear on whether what I proposed in my post is legal and not a violation of the NEC or not. If you could chime in any further, I would love to hear your input. Thanks!
 
Sorry my friend, legal questions are directed to law firm: Dewey, Cheatum, & How.
215.12(C)(1) Feeders Supplied from More Than One Nominal Voltage System.
 
Status
Not open for further replies.
Top