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 02-19-2013, 06:50 PM   #1
Member
 
ericmunyon12345's Avatar
 
Join Date: Feb 2013
Posts: 55
Rewards Points: 75
Default

Easy sufficiant service check?


Let's say I want to add a couple circuits for a garage or addition. I know the calculating method where you multiply sq. ft. By 3, add 1500 for appliance and laundry circuits, other fixtures... 10000 watts at 100%, and so on (the formula is not my question). Is there a way to get a general idea with a clamp meter. For example, if each leg of a 100 amp service is well under 100 with appliances, etc. turned on, is that a reasonable way to see if existing service is able to handle new circuit(s)? If so, would it follow the 80% safe capacity rule as with branch circuits?

ericmunyon12345 is offline   Reply With Quote
Old 02-20-2013, 06:28 AM   #2
Electrical Contractor
 
jbfan's Avatar
 
Join Date: Jun 2004
Location: Newnan GA
Posts: 5,871
Rewards Points: 2,138
Default

Easy sufficiant service check?


Yes, you can turn everything on a place an amp probe on each leg.
This will tell you the current draw at that time.

Us the highest rated between the heat and a/c.

There is no 80% rule for the service.

__________________
Yes I am a Pirate, 200 years too late. "Jimmy Buffett"
jbfan is online now   Reply With Quote
The Following User Says Thank You to jbfan For This Useful Post:
ericmunyon12345 (02-20-2013)
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
Have I "been had"? Not_My_Area HVAC 21 06-27-2011 06:03 PM
How to properly ground electric service mac70pete Electrical 1 05-25-2011 05:39 PM
Sanity Check For HVAC Service havocwreaker HVAC 19 04-26-2010 12:06 PM
Big electrical mess -- need a sanity check. flashingcursor Electrical 9 04-14-2010 08:48 PM
Service mast options bsperr Electrical 6 12-09-2009 08:48 AM




Top of Page | View New Posts

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