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 12-31-2012, 10:05 AM   #1
Member
 
Join Date: Feb 2012
Location: NE NC
Posts: 256
Share |
Default

Dedicated circuit for radiant floors...


I have two bathrooms with 4 total receps sharing a 20A breaker. It seems like all the heated floor mats reccommend a dedicated circuit for the installation. Anyone know of one that does not require its own circuit? Or Is there any reason I should be weary of connecting to the existing recep power? Other than going against manufacturers instructions. I can't see much more than a hair dryer and the floor heat running at the same time.

MisterSteve is online now   Reply With Quote
Old 12-31-2012, 10:50 AM   #2
Civil Engineer
 
Join Date: Mar 2009
Location: Boston
Posts: 4,170
Default

Dedicated circuit for radiant floors...


The best way to connect is a function of the total amperage draw of the floor mat, which you did not mention. The electric radiant floor heat in my kitchen uses approximately 12 watts per square foot, which is pretty typical. For a 100 square foot installation, that would require 1200 watts, which is about 10 amps at 120 volts (some mats can be purchased at 240 volts).

The problem with piggybacking off an existing circuit is that the mats draw continuously, so if you have a 10 amp draw, and you turn on a 12 amp hairdryer, you are going to blow the breaker on a 15 amp circuit, and possibly blow even a 20 amp circuit. If you are going to use a small draw mat, say 5 amps, you may be able to piggyback it on to an existing circuit.

Daniel Holzman is offline   Reply With Quote
Old 12-31-2012, 11:54 AM   #3
Semi-Pro Electro-Geek
 
Join Date: Jul 2009
Location: Arizona, USA
Posts: 2,544
Default

Dedicated circuit for radiant floors...


Quote:
Originally Posted by MisterSteve View Post
I can't see much more than a hair dryer and the floor heat running at the same time.
A hairdryer and floor heat at the same time will trip the breaker. Floor heat requires a dedicated circuit because it uses almost the entire capacity of a dedicated circuit.
__________________
I am a lawyer, but not your lawyer. And who cares anyways? We're here to talk construction. This is DIY advice, not legal advice.
mpoulton is offline   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
dedicated circuit or not jkwolfpack Electrical 14 01-24-2012 07:00 AM
dedicated circuit for gas stove & hood? acerunner Electrical 3 09-30-2011 05:58 PM
Why a dedicated line? tmorriss Electrical 16 02-22-2011 07:53 PM
Moving a Fridge, is a dedicated circuit required...or not? Snowy334 Electrical 7 07-03-2009 12:36 PM
Dedicated 20amp circuit chingon Electrical 1 03-31-2009 06:36 PM




Top of Page | View New Posts

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