208V Heater? - 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 01-22-2010, 03:41 PM   #1
Member
 
Join Date: Jul 2009
Posts: 61
Rewards Points: 79
Default

208V Heater?


I'm looking to replace the monster 220V wall heater in my bathroom that sounds like a B-24 bomber on takeoff. I found a "Stiebel Eltron" on amazon that looks good but it says it's 208V? I assume that would work on my circuit but just trying to figure out why it's 208V?
thebigsee is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-22-2010, 03:51 PM   #2
Member
 
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 8,597
Rewards Points: 2,800
Default


Certain systems known as 3 phase systems have standard 120 volt power where two hot legs used together have 208 instead of 240 volts.

These are not common in residential areas but may be found in buildings that are part commercial part residential. There are three hot leads (and one neutral) and each residence gets two hot leads just as in a 120/240 volt service.

It is not certain whether a 208 volt heater will work on a 240 volt circuit. If the heater contains a motor (blower motor) that motor may be damaged by 240 volt overvoltage. The heating elements will run a little hotter but practically speaking, the heater framework will probably withstand this.

Going the other way, 240 volt equipment not containing motors loaded to near maximum rating will probably work OK on 208 volts.
__________________
Stick to your lawn watering schedule until it really starts to pour. After the storm you have only the same number of rest days you always had and then you need to start watering again.

Last edited by AllanJ; 01-22-2010 at 03:59 PM.
AllanJ is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-22-2010, 03:56 PM   #3
Licensed Electrical Cont.
 
Speedy Petey's Avatar
 
Join Date: Feb 2004
Location: NY State
Posts: 7,828
Rewards Points: 2,006
Default


It's most likely work, but not properly.

Find one that is 240v.
Speedy Petey is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-22-2010, 04:03 PM   #4
Member
 
Join Date: Nov 2007
Location: Central MN
Posts: 367
Rewards Points: 266
Default


Do you have a link to the heater?




I'll add that most heaters are 208-240 volt, and can be ran on any voltage in that area. (Output wattage will vary) Big thing is to look at the nameplate, one thing you sometimes can't do when you purchase stuff online. It could be a typo at the website.

A general rule is if something is listed at straight 208 V, it would be unwise and possibly dangerous to run on 240V.
junkcollector is offline   Reply With Quote
Old 01-22-2010, 05:33 PM   #5
Electrical Contractor
 
kbsparky's Avatar
 
Join Date: Sep 2008
Location: Delmarva
Posts: 3,368
Rewards Points: 2,000
Default


IF your heater is rated for use only on 208 Volt systems, the element will put out 33% more watts when connected to a 240 Volt source. If it is not rated for this, it will: (1) Overload your circuit, and/or (2) burn out the unit.
__________________
-KB

Life is uncertain -- eat dessert first!!
kbsparky is offline   Reply With Quote
Old 01-22-2010, 06:10 PM   #6
Member
 
Join Date: Jul 2009
Posts: 61
Rewards Points: 79
Default


Quote:
Originally Posted by kbsparky View Post
IF your heater is rated for use only on 208 Volt systems, the element will put out 33% more watts when connected to a 240 Volt source. If it is not rated for this, it will: (1) Overload your circuit, and/or (2) burn out the unit.
Thanks for all your responses. I believe the unit (http://www.irawoods.com/Stiebel-Eltr...ric-Fan-Heater) somehow can manage to run at either 208V or 240V -- here's what the description says:

"The CK 20 E is capable of running at either 208V, producing 1500 watts; or at 240V where it produces 2000 watts."
thebigsee is offline   Reply With Quote
Old 01-22-2010, 06:12 PM   #7
Member
 
Join Date: Jul 2009
Posts: 61
Rewards Points: 79
Default


Quote:
Originally Posted by junkcollector View Post
Do you have a link to the heater?




I'll add that most heaters are 208-240 volt, and can be ran on any voltage in that area. (Output wattage will vary) Big thing is to look at the nameplate, one thing you sometimes can't do when you purchase stuff online. It could be a typo at the website.

A general rule is if something is listed at straight 208 V, it would be unwise and possibly dangerous to run on 240V.
Here's the link:

http://www.irawoods.com/Stiebel-Eltr...ric-Fan-Heater
thebigsee is offline   Reply With Quote
Old 01-22-2010, 07:14 PM   #8
Member
 
Join Date: Nov 2007
Location: Central MN
Posts: 367
Rewards Points: 266
Default


Quote:
Originally Posted by thebigsee View Post

Thanks.

From the specs:

Quote:
... The CK 20 E is capable of running at either 208V, producing 1500 watts; or at 240V where it produces 2000 watts.
junkcollector is offline   Reply With Quote
Old 01-22-2010, 07:19 PM   #9
Idiot Emeritus
 
Join Date: Mar 2008
Location: Fernley, Nevada (near Reno)
Posts: 1,910
Rewards Points: 80
Default


The CK 20 E will work just fine on 240 volts. It's designed for either voltage. No re-connection is needed.

Rob
micromind is offline   Reply With Quote
Old 01-22-2010, 08:09 PM   #10
Member
 
Join Date: Jul 2009
Posts: 61
Rewards Points: 79
Default


Thank you!
thebigsee is offline   Reply With Quote
Sponsored Links
Advertisement
 
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
Pilot on Williams millivolt wall heater goes out every 8 to 16 hours wornways HVAC 30 06-22-2011 03:29 PM
208v heater phil dufour Electrical 6 04-19-2009 09:47 PM
Water heater problem bear1957 Plumbing 23 11-01-2007 03:53 PM
Periodic release from (I think) the T&P valve on the water heater alexz Plumbing 3 08-15-2006 10:31 AM




Top of Page | View New Posts