ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

>> Home >> Electrical-Photos >> Classifieds >> Subscribe to Newsletter >> Store

ECN Forum Forums General Topics of the Trade General Discussion Area OH Service

Featured:

Electrical
Clearance
*
Tools
*
Books
*
Test Equipment

Advertisement:-Left

PPE for Women

40 CAL PREMIUM Lightweight
Arc Flash PPE Kits

Recent Gallery Topics:

What in Tarnation?
by timmp, September 10

Plumber meets Electrician
by timmp, September 10

Who's Online Now

0 members (), 301 guests, and 10 robots.

Key: Admin, Global Mod, Mod

Print Thread

Rate Thread

OH Service

#27258 07/06/03 11:39 PM

Joined: Aug 2002

Posts: 33

Mike_Riverside Offline

Member

In a 200A OH service tri-plex will be 1/0, should the riser also have 1/0, or 3/0 because it is in conduit? Riser will be CU THWN-2, Sun Resist.

[This message has been edited by Mike_Riverside (edited 07-06-2003).]

Tools for Electricians:

Re: OH Service

#27259 07/07/03 03:11 PM

Joined: Jan 2001

Posts: 1,044

Shinnston, WV USA

Tom

Member

Mike,

If this is a service for a dwelling, 2/0 copper is fine, if it is for any other occupancy, you'll need at least 3/0 copper.

Tom

Few things are harder to put up with than the annoyance of a good example.

Moderated by dougwells, electure, gfretwell, HotLine1, Scott35, Trumpy

Link Copied to Clipboard

New!

Master Electrician's Exam Prep Based on the 2026 NEC

Tools for Electricians

Advertisement:-Right

Dirt Auger System

Switch Bit - Interchangeable Flex Bit System

Member Spotlight

Niko
Campbell, CA

Posts: 356
Joined: August 2006