Wire Size Calculator - Electrical - DIY Chatroom Home Improvement Forum
Advertisement


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

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

Reply
 
Thread Tools Display Modes
Old 02-28-2011, 08:47 AM   #1
Newbie
 
Join Date: Dec 2009
Posts: 29
Rewards Points: 25
Default

Wire size calculator


I tried the search feature on this page and did not find the answer, so here is another stupid question.

When using a wire size calculator I found on line, there is a space for "One Half The Total Circuit Length".

Now, my new garage will have a sub panel 80 feet away from the main panel. Does this mean that I would put 40 feet into the calculator?

Thanks
Brian

By the way, I just want to thank members of this chatroom for the help and advice you have sent my way.

Advertisement

brjl is offline   Reply With Quote
Old 02-28-2011, 10:00 AM   #2
Member
 
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 7,213
Rewards Points: 2,528
Default

Wire size calculator


The total circuit length is a round trip so half the circuit length is the distance between the two items (panels, boxes, etc.)

To add to the complexity, there are different rules for wires hung in free air (such as overhead) versus wires in Romex cables or buried or in conduit. And a further calculation, called derating, for several circuits' worth or wires running juxtaposed. The rule of 14 gauge for up to 15 amps and 12 gauge for up to 20 amps is for wires within cables running singly.

Advertisement

__________________
(One morning on WRKO Radio) The tub's not clean! Let's remodel the bathroom.
(One afternoon on WRKO Radio) It's time for an oil change. I'm going to trade in the car for next year's model.

Last edited by AllanJ; 02-28-2011 at 10:03 AM.
AllanJ is offline   Reply With Quote
Reply


Thread Tools
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 and type of entrance wire for 200A? Beemer533 Electrical 7 03-15-2010 10:54 PM
HALP! Master/Remote Dimmer troubles! Confuserated Electrical 9 02-12-2010 03:30 PM
hooking up dryer....bronx ny code SURFBUG Appliances 6 10-14-2008 09:41 PM
What size wire do I have? 737Pilot Electrical 4 10-09-2008 09:47 PM
Wire size and Breaker size for remodel ?? Skydmark1 Electrical 12 12-15-2007 05:00 PM




Top of Page | View New Posts