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#190138 - 11/07/09 02:14 PM Range cord vs circuit  
watersparkfalls  Offline
Member
Joined: Mar 2005
Posts: 216
Washington...Not DC
I have an island(slab)with a range in it, I will need to pull thwn through my raceway to feed it, the manufactures specs say it has a maximum amperage of 27.6 amps and requires a 40 amp cord for connection. Can I feed a 40 amp plug with only 30 amps? Seems as an apprentice, my old company got gigged for this exact same thing. What say you?
Thanks,
H20


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#190143 - 11/07/09 04:18 PM Re: Range cord vs circuit [Re: watersparkfalls]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,103
Estero,Fl,usa
230.23

Quote
(B) 30-Ampere Branch Circuits. A 30-ampere branch circuit shall be permitted to supply fixed lighting units with heavy-duty lampholders in other than a dwelling unit(s) or utilization equipment in any occupancy. A rating of any one cord-and-plug-connected utilization equipment shall not exceed 80 percent of the branch-circuit ampere rating.


Greg Fretwell

#190147 - 11/07/09 05:56 PM Re: Range cord vs circuit [Re: gfretwell]  
KJay  Offline
Member
Joined: Nov 2007
Posts: 763
MA, USA
What I have noticed, over the last several years anyway, is how difficult it is sometimes to decipher range manufactures listed installation instructions and electrical requirements.
Often they list a minimum circuit ampacity as well as a minimum conductor size that doesn’t seem to correspond directly to the nameplate rating of the appliance.

I can remember a couple of years ago with one dual-fuel range, the installation instructions said to install a 30A 4-wire receptacle in the location specified on the template, but when I read the actual electrical requirements in the instructions, they stated to use a #8 minimum conductor size for the branch circuit.

Because of this, I always try and get copies of the manufactures installation instructions whenever I get the appliance schedule for a job.



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