Range Question- Common Question But Eager To Learn Info! - Electrical - DIY Chatroom Home Improvement Forum

 DIY Chatroom Home Improvement Forum range question- common question but eager to learn info!
 Register Blogs Articles Rewards Search Today's Posts Mark Forums Read

10-12-2012, 06:37 AM   #1
Member

Join Date: Nov 2011
Location: MA
Posts: 167
Rewards Points: 152

## range question- common question but eager to learn info!

i have an electric range/double oven and the instructions state that it needs a MINIMUM of 40amp 240v dedicated circuit. the label on the front states that at 120/240v its rated for 13.8 Kw. isn't there a NEC code that states ranges over 12 Kw need a 50 amp circuit?

out of curiosity because i don't know a whole lot about commercial power, the label also says at 208Y/120v the power rating is like 6 or so Kw; is that 3 phase power?

10-12-2012, 07:04 AM   #2
Resi EC

Join Date: Aug 2012
Location: Kansas
Posts: 480
Rewards Points: 252

Table 220.55, Note 1, would apply

Table 220.55 Column C is for ranges from 8 3/4 to 12 kw.
For 1, 12kw rated range a demand of 8 kw is allowed.

Note 1. For ranges over 12 kw 5% shall be added for every kw and major fraction. (in a nut shell)

So with a 13.8 kw range it would be 8kw + 10% = 8.8kw
8800/240= 36.6, next higher would be 40a

If my math is incorrect I'll be corrected by someone

Yes 208/120 is for 3 phase.

 10-12-2012, 10:31 AM #3 Member     Join Date: Nov 2011 Location: MA Posts: 167 Rewards Points: 152 that is crystal clear! thanks, i have the 2011 nec pocket edition at home and i will double check. i have read heated arguments in the past on here about whether its better to just run a 6/3 w/50amp rather than a 8/3 with 40 amp to "future proof" the kitchen. its a starter home so i will most likely do the 8/3 with 40amp breaker.

 10-12-2012, 06:57 PM #4 Licensed Electrician     Join Date: Mar 2012 Location: SE Wisconsin Posts: 4,352 Rewards Points: 2,006 It really doesn't matter what the NEC states, you have to go by the manufacturer's instructions. They, in a sense, trump the code. __________________ __________________________________________________ ______________ Answers based on the National Electric Code. Always check local amendments.
 10-12-2012, 08:03 PM #5 Member     Join Date: Nov 2011 Location: MA Posts: 167 Rewards Points: 152 yes i have heard that, the instructions explicitly state a MIN of 40 amp circuit; that leaves interpenetration that 50 amp is suitable as well. now quoting office space, is the BARE minimum in this case worse or is perfectly adequate and recommended?
10-12-2012, 08:14 PM   #6

Join Date: Mar 2012
Location: SE Wisconsin
Posts: 4,352
Rewards Points: 2,006

__________________
__________________________________________________ ______________
Answers based on the National Electric Code. Always check local amendments.

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are Off Pingbacks are Off Refbacks are Off Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post IIchrisII Electrical 4 07-27-2009 08:37 PM drtbk4ever Appliances 5 05-26-2009 09:56 AM nyc_apt_dweller Electrical 4 03-05-2009 08:34 PM Jeremy Hillary Boob, PhD Electrical 3 01-15-2009 04:06 PM tulsa442 Electrical 20 04-15-2008 09:58 PM

Top of Page | View New Posts