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devranjandas
Active Contributor

Join Date: Jun 2007
Posts: 24

MCB rating for half HP Motor

04/25/2008 9:42 AM

What MCB should I use for a half HP single phase motor knowing the fact that a motor draws more current when it starts.
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JRaef
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United States - Member - New Member Engineering Fields - Power Engineering - New Member

Join Date: Sep 2006
Location: California, USA, where the Godless live next door to God.
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#1

Re: MCB rating for half HP Motor

04/25/2008 6:02 PM

D curve, but it also depends on the manufacturer.

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badar
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Join Date: Apr 2008
Location: Riyadh - Saudi Arabia
Posts: 29
#2

Re: MCB rating for half HP Motor

04/26/2008 4:21 AM

what is the starting current of motor?
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Sciesis2
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#3

Re: MCB rating for half HP Motor

04/26/2008 1:57 PM

Same old story... WHERE ARE YOU?? or in your case what Mains voltage do you use? This will have a major impact on the size of circuit breaker you need. We can't even begin to guess without that information.

Much Thanks

Bill
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#4

Re: MCB rating for half HP Motor

04/28/2008 7:46 AM

What voltage?

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devranjandas
Active Contributor

Join Date: Jun 2007
Posts: 24
#6
In reply to #4

Re: MCB rating for half HP Motor

04/29/2008 1:03 AM

230V single phase 50Hz
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Pebbles
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Join Date: Jun 2007
Location: Missouri
Posts: 86
Good Answers: 1
#5

Re: MCB rating for half HP Motor

04/28/2008 4:10 PM

I need 450' of hog house wire.

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badar (1); devranjandas (1); JRaef (1); Pebbles (1); PWSlack (1); Sciesis2 (1)

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