Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 01-29-2008, 06:51 PM   #1
Newbie
 
Join Date: Jan 2008
Posts: 16
Share |
Default

how determine size of service


I read a lot of posts and articles that say something like, " if you have 100amp service.."
I'm trying to figure out what that exactly means.
For example, I have a main panel that has a main breaker that is two 100 amp breakers side by side, one for each phase.
Now, is that considered "100 amp service" or "200 amp service"?
To my logic it should be 200 amp service, since I have 100 amp available for each phase.

tikicarver is offline   Reply With Quote
Old 01-29-2008, 07:03 PM   #2
Member
 
Join Date: Jan 2008
Posts: 70
Default

how determine size of service


that would generally be called a 100amp service, and there should be a breaker tie so that both poles are disconnected at the same time

nacko is offline   Reply With Quote
Old 01-29-2008, 08:10 PM   #3
Licensed Electrical Cont.
 
Speedy Petey's Avatar
 
Join Date: Feb 2004
Location: NY State
Posts: 6,810
Default

how determine size of service


That is a 100A service.
You DO NOT add up the breaker as you thought.
A single breaker is a single pole breaker. A double breaker, such as your main, is a double-pole breaker.
Your main is a two-pole 100 amp breaker.
You have 100 amps @ 240v.
__________________
Sometimes I feel like if I answer any more questions it is like someone trying to climb over a fence to jump off a bridge and me giving them a boost.
Answers based on the 2008 & 2011 NEC.
Speedy Petey is online now   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Size of whole house fan needed Doug Crf General DIY Discussions 20 02-25-2011 11:29 PM
Service size pipe 3/4 or 1 inch? kgphoto Plumbing 6 01-29-2008 06:23 PM
200 amp panel with a 100 amp service? alexz Electrical 10 07-29-2007 10:00 PM
Suspected open/loose service neutral mrtomwj Electrical 5 09-28-2006 08:46 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.