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09-16-2011, 07:48 PM   #1
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## old Hotpoint elect. range. How many amps?

I purchased an older (probably 12+ years) used electric Hotpoint range to replace a propane stove at a hunting shack. nothing on the name plate says anything about amps. Just says 10.6 killowatts 120/240 and 8.2 killowatts 120/208. Want to put the right gauge copper wire in, as well as correct breaker for the amps? Plenty of power to load center, and run to range location is just shy of 40'.
8/3 with 40 amp breaker or 6/3 with 50 amp breaker?

09-16-2011, 07:59 PM   #2
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10.6 kw/240 volt= 44.16 amps, so go with the 50 amp and #6/3 wire.

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 The Following User Says Thank You to jbfan For This Useful Post: borrmabd (09-16-2011)
09-17-2011, 03:52 AM   #3
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Quote:
 Originally Posted by jbfan 10.6 kw/240 volt= 44.16 amps, so go with the 50 amp and #6/3 wire.

Column C of 220.55 says a 8kW demand factor for a 10.6 kW range, so a 40 amp breaker and 8/3 cable would work.

220.18(C)

 09-17-2011, 06:41 AM #4 Newbie   Join Date: Sep 2011 Posts: 4 Rewards Points: 10 So I could go either way? 50 amp breaker with 6/3 or 40 amp breaker with 8/3? I assume the 40 amp with 8/3 would save \$\$. Which would be safer? the 250 unit seniors building it came out of were using 50 amp breakers in all the units. Hmm
09-17-2011, 07:00 AM   #5
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Quote:
 Originally Posted by borrmabd So I could go either way? 50 amp breaker with 6/3 or 40 amp breaker with 8/3? I assume the 40 amp with 8/3 would save \$\$. Which would be safer? the 250 unit seniors building it came out of were using 50 amp breakers in all the units. Hmm
What kind of plug is on the end of the cable for the range? 40A or 50A? You can't put a 40A receptacle on a 50A breaker.

 09-17-2011, 07:08 AM #6 Newbie   Join Date: Sep 2011 Posts: 4 Rewards Points: 10 It didn't have a plug... so I was going to purchase a 4 prong (not even sure if they come in 40 and 50 amp). I thought I read somewhere that because of the short 6' distance in the cord...40 amp cord works as well?
09-17-2011, 07:31 AM   #7
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Quote:
 Originally Posted by borrmabd It didn't have a plug... so I was going to purchase a 4 prong (not even sure if they come in 40 and 50 amp). I thought I read somewhere that because of the short 6' distance in the cord...40 amp cord works as well?
40A and 50A receptacles are physically different as well. So you have to match them up. But as a previous poster said, use a 50A breaker, 50A plug, 50A receptacle and #6 wire.

BTW, the demand factor from the previous poster is only for calculating a service, not for sizing for the individual appliance.

 09-17-2011, 07:35 AM #8 Newbie   Join Date: Sep 2011 Posts: 4 Rewards Points: 10 Awesome. thank you. Hope to be in Manitoba again this year in a week goose hunting.
09-17-2011, 08:48 AM   #9
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Quote:
 Originally Posted by CheapCharlie BTW, the demand factor from the previous poster is only for calculating a service, not for sizing for the individual appliance.
This statement is not correct, you need to read the NEC sections quoted. They very specifically say that the de-rating table is applicable for a single kitchen range appliance.

BTW, you can use a 50 amp receptacle on #8 wire with a 40 amp breaker.
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09-17-2011, 08:54 AM   #10
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Quote:
 Originally Posted by CheapCharlie 40A and 50A receptacles are physically different as well. So you have to match them up. But as a previous poster said, use a 50A breaker, 50A plug, 50A receptacle and #6 wire. BTW, the demand factor from the previous poster is only for calculating a service, not for sizing for the individual appliance.
Would you please show me a NEMA designation for a 40 amp plug and receptacle.

09-17-2011, 08:59 AM   #11
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Quote:
 Originally Posted by brric Would you please show me a NEMA designation for a 40 amp plug and receptacle.
I wanna see it also.

09-17-2011, 12:15 PM   #12
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Quote:
 Originally Posted by CheapCharlie 40A and 50A receptacles are physically different as well. So you have to match them up. But as a previous poster said, use a 50A breaker, 50A plug, 50A receptacle and #6 wire. BTW, the demand factor from the previous poster is only for calculating a service, not for sizing for the individual appliance.
AFAIK, TANSTAAFAR (there ain't no such thing as a forty amp receptacle). Just 30's and 50's. A 40A circuit would use a 50A receptacle. And I'm pretty sure the article quoted specifically applies to kitchen range branch circuit sizing. #8 wire with a 50A receptacle on a 40A breaker would be correct.

 09-17-2011, 08:05 PM #13 Member   Join Date: Feb 2011 Location: Manitoba, Canada Posts: 147 Rewards Points: 79 Nema 14-50 Attached Images
09-17-2011, 08:25 PM   #14
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Quote:
 Originally Posted by CheapCharlie Nema 14-50

Yes that is 50 amp receptacle.

09-17-2011, 08:25 PM   #15
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Quote:
 Originally Posted by CheapCharlie Nema 14-50
What's your point? that is a single phase, four wire 50 amp receptacle. Where is thwe 40 amp you alluded to?

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