Electric Baseboard Heaters - Electrical - DIY Chatroom Home Improvement Forum


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 12-21-2011, 04:46 PM   #1
Newbie
 
Join Date: Dec 2011
Posts: 5
Rewards Points: 10
Cool

electric baseboard heaters


i'm looking to install a couple of electric baseboard heaters in my home there 240v 4800w on a 100a service here is my question what size conductor and breaker i did some home work and found two different ways with two different answers thanks gary

Advertisement

garyjackel1 is offline   Reply With Quote
Old 12-21-2011, 05:22 PM   #2
Electrician
 
Join Date: Nov 2005
Location: Winnipeg, Manitoba
Posts: 1,159
Rewards Points: 534
Default

electric baseboard heaters


Amps=Power/Voltage

4800/240=20A

In Canada that would have to go on a 30A breaker, I beleive it is the same in the USA, someone should be by that can let us know if I am correct on that.

Advertisement

darren is offline   Reply With Quote
Old 12-21-2011, 07:10 PM   #3
Newbie
 
Join Date: Dec 2011
Posts: 5
Rewards Points: 10
Default

electric baseboard heaters


that was one of the ways i did it and came up with the same answer 20a breaker and 12/2 but what about the appliance overcurrent protection section 422.11 (E) (3) 150% 20a x 1.5 = 30a so then this would now be a 30a breaker with 10/2 unless i'm reading this wrong ???
garyjackel1 is offline   Reply With Quote
Old 12-21-2011, 07:40 PM   #4
Electrical Contractor
 
kbsparky's Avatar
 
Join Date: Sep 2008
Location: Delmarva
Posts: 3,368
Rewards Points: 2,000
Default

electric baseboard heaters


You would need at least a 25 Amp circuit to feed such a load. Electric heat is considered a continuous load.

Oh, and BTW, the pertinent section of the Code is article 424, not 422.
__________________
-KB

Life is uncertain -- eat dessert first!!

Last edited by kbsparky; 12-21-2011 at 07:42 PM. Reason: added code info
kbsparky is offline   Reply With Quote
Old 12-21-2011, 07:42 PM   #5
Licensed Electrical Cont.
 
Speedy Petey's Avatar
 
Join Date: Feb 2004
Location: NY State
Posts: 6,904
Rewards Points: 2,162
Default

electric baseboard heaters


Quote:
Originally Posted by garyjackel1 View Post
that was one of the ways i did it and came up with the same answer 20a breaker and 12/2 but what about the appliance overcurrent protection section 422.11 (E) (3) 150% 20a x 1.5 = 30a so then this would now be a 30a breaker with 10/2 unless i'm reading this wrong ???
A) PLEASE try to write in sentences. Your posts are hard to read.

B) 422.11 does NOT apply. You need Art. 424.
__________________
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 offline   Reply With Quote
Old 12-22-2011, 11:07 AM   #6
Newbie
 
Join Date: Dec 2011
Posts: 5
Rewards Points: 10
Cool

electric baseboard heaters


ok so back to my original question what size conductor and breaker would i need for the electric baseboard heaters 240v 4800w
garyjackel1 is offline   Reply With Quote
Old 12-22-2011, 01:11 PM   #7
Member
 
Join Date: Oct 2011
Posts: 236
Rewards Points: 180
Default

electric baseboard heaters


10/2 on a 25 or 30A breaker to be code compliant but it would work perfectly with 12ga on 20 amp breaker in real life, unless heater will runs for more than 3 hours consecutive
carmusic is offline   Reply With Quote
Old 12-22-2011, 01:18 PM   #8
Member
 
joed's Avatar
 
Join Date: Mar 2005
Location: Welland, Ontario
Posts: 8,378
Rewards Points: 3,550
Blog Entries: 4
Default

electric baseboard heaters


That is a 20 amp load. No way it should be put on a 20 amp breaker.
Use 10/2 cable and a 30 amp breaker.
__________________
Do not PM with questions that can be asked in a forum. I will not respond.
joed is online now   Reply With Quote
Old 12-22-2011, 01:50 PM   #9
Member
 
Join Date: Oct 2011
Posts: 236
Rewards Points: 180
Default

electric baseboard heaters


Quote:
Originally Posted by joed View Post
That is a 20 amp load. No way it should be put on a 20 amp breaker.
Use 10/2 cable and a 30 amp breaker.
remember that it is not only one heater, it is multiple heaters (will they run simultaneously for long periods??) and a 20 amp breaker can handle 20 amp and should never trip but by code he need 25 or 30 amp
carmusic is offline   Reply With Quote
Old 12-22-2011, 03:47 PM   #10
Licensed Electrical Cont.
 
Speedy Petey's Avatar
 
Join Date: Feb 2004
Location: NY State
Posts: 6,904
Rewards Points: 2,162
Default

electric baseboard heaters


Quote:
Originally Posted by carmusic View Post
10/2 on a 25 or 30A breaker to be code compliant but it would work perfectly with 12ga on 20 amp breaker in real life, unless heater will runs for more than 3 hours consecutive
The 3 hours does NOT figure into this application.
By code fixed electric heat must ALWAYS be considered a continuous load.

10/2 on a 25 or 30. Period.
__________________
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 offline   Reply With Quote
The Following User Says Thank You to Speedy Petey For This Useful Post:
Jim Port (12-23-2011)
Old 12-22-2011, 05:14 PM   #11
Newbie
 
Join Date: Dec 2011
Posts: 5
Rewards Points: 10
Cool

electric baseboard heaters


now you can understand why i was getting concerned about witch article is correct it's 10/2 30a double pole correct ??
garyjackel1 is offline   Reply With Quote
Old 12-22-2011, 06:17 PM   #12
Member
 
Join Date: Nov 2011
Posts: 128
Rewards Points: 75
Default

electric baseboard heaters


Not to take you off topic, but have you considered a mini-split heat pump instead of baseboard electric? Much more efficient in most areas.
kwilcox is offline   Reply With Quote
Old 12-22-2011, 06:44 PM   #13
Newbie
 
Join Date: Dec 2011
Posts: 5
Rewards Points: 10
Default

electric baseboard heaters


i don't know that much about heat pumps and i already have the electric baseboard heater thanks anyway
garyjackel1 is offline   Reply With Quote
Old 12-22-2011, 08:47 PM   #14
Member
 
Missouri Bound's Avatar
 
Join Date: Apr 2011
Location: Almost Arkansas
Posts: 2,764
Rewards Points: 2,000
Default

electric baseboard heaters


Quote:
Originally Posted by kwilcox View Post
Not to take you off topic, but have you considered a mini-split heat pump instead of baseboard electric? Much more efficient in most areas.
Efficiency is wonderful. Have you ever compared the cost between the two? Not exactly comparing apples to apples.
Missouri Bound is offline   Reply With Quote
Old 12-23-2011, 10:52 AM   #15
Member
 
Join Date: Nov 2011
Posts: 128
Rewards Points: 75
Default

electric baseboard heaters


Well, 4800 watts produces about 16400 BTU. At .13/KWH that costs about .62/hr. Averaging this for a day would be about $7.50 (given 12 hours on). This increases your electric bill by $223/mo during heating season.

By comparison, a YMGI 18K BTU mini split delivers minimum of 14,500 BTU at 5 degrees F (16,400 BTU at 15F) and is $1400 delivered from breezone.

http://www.breezzone.com/category.ph...y=61&list_id=1

Installation by a professional HVAC installer including electrical would cost no more than $500. For mine, I did the electrical myself and got my local HVAC guy to run line sets, evacuate and pressurize for $100 as a side job.

Anyway, this unit draws 2500Watts max with an average of 1600 due to the inverter technology it employs.

Sooo... given the same parameters:

2000 watts average at .13/KWH costs .26/hr or $3.12/day or about $94/mo, a savings of $129/mo.

Given the difference in initial investment is about $1500 (those baseboards + wiring gotta cost about $400) then payback is about 12 heating months. Note that this doesn't take into account the energy tax credit on the investment due to the YMGI Energy Star rating.

Figure 5 years as a conservative and reasonable payback guesstimate provided electric rates don't change. Probably closer to 3 when you figure in the energy credit write off.

Increase in rates will skew this downward dramatically.

Keep in mind that this HVAC strategy reduces cooling costs in summer as well. I haven't even started to figure that into this quick comparison. My 9K BTU YMGI minisplit saved me money in summer as well because at 22 SEER, it is way more efficient than my central air unit. My main unit ran noticeably less last summer.

Advertisement


Last edited by kwilcox; 12-23-2011 at 11:04 AM.
kwilcox 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
Electric baseboard heaters ? ants1929 HVAC 11 03-11-2011 09:23 AM
Electric Baseboard Heater Questions mark2741 HVAC 0 12-31-2010 01:08 PM
Programmable Electric Baseboard Heaters Proulx06 HVAC 4 12-21-2010 10:55 PM
closing off outlets above electric baseboard heaters abieslas Electrical 6 11-20-2008 12:45 AM
Removing Baseboard Electric Heaters gieriscm Electrical 12 11-12-2007 05:59 PM




Top of Page | View New Posts