Air compressor

[HB]

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I am putting in a new Rockworth air compressor. I have ran a 10/3 underground wire for power(30'). The motor is 5 HP running. I need a cord to plug the motor in with. Should I use a 10 ga.or will 12 work for this. I know where I was working at we ran 12 ga. wire (200')to a 1 hp motor with 12 ga. plug 220 volts.

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[zxcvbob]

220 volts, right? Then twelve will be fine. (assumes reasonable length cord.) It's not easy finding a 20A plug that will accept #10 cord.

Bob

[Joe]

If you get a NEMA 6-30R receptacle and 6-30P plug you won't have to fight with it. If using stranded wire consider getting some crimp fittings to make it easier. Easy to find at any place the pros hang out.

Joe

[Phisherman]

That's a hefty motor. Use 10 ga for 120 volts, 12 ga for 220v.

[ransley]

Rockworth, is that a chinese company trying to mimic the famed Rockwell co.

[Hb]

Hb had written this in response to

: It is from the UK as best i can tell. They have a website. There is a distributer in Rock Hill.SC. As far as the cord I am only going 4' to the plud that is coming from the breaker with the 10/3 solid wire. It does not have the cord to plug into the wall. so12/3 should be fine. Te weird part is they do not have this one listed on their website. RW7580V2 80 gallon

------------------------------------- ransley wrote:

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[Hb]

Hb had written this in response to

:

I just looked at the motor aga> HB wrote:

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[zxcvbob]

According to table 400-5(A), the ampacity of all common types of flexible cords and cable is 25A for 12 gauge with 2 current-carrying conductors (and the ampacity of the uncommon types, like HPN, is 30A)

I might be tempted to use a dryer cord and a 10-30R outlet for this application.

What size breaker are you going to use, (20 or 30A) or are you going to use 25A fuses? That really determines the proper plug configuration.

Bob

[Hb]

Hb had written this in response to

:

30 amp Thanks for all the help. I think i got it.

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