help wiring my compressor

[Spunks]

Hi guys, I have a 2 stage ingersoll rand 60 gal compressor that I'm looking to temporarily wire in my basement about 10-15 feet from my panel until I get electric ran to my garage which will be a while. I have limited knowledge in electrical and I'm not sure exactly what I need.

From what I have read in my searches on this forum, it is recommended that the compressor is to be hard wired but when I bought it (used by the way) it had a plug. I'm thinking of using this plug for now.

So what would I need as far as wire type and breaker?

Sticker on the motor

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Plug that it came with

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[nadogail]

You have a 230 volt motor that needs a two pole 30 amp breaker and #10 wire, plus the appropriate twist lock receptacle

 

[pattenp]

Here's the catch. To be wired NEC compliant being listed as 5HP motor it needs to be hardwired with wire that has a minimum of 35A capacity such as #10 THHN or #8 Nm. 30A plug only has a 3HP rating. It's okay to use 30A breaker, but if you experience startup tripping then up it to a 40A.

 

[wyliesdiesels]

U will also need a disconnect if not within sight of and more than 50' from panel.

 

[Spunks]

Here's the catch. To be wired NEC compliant being listed as 5HP motor it needs to be hardwired with wire that has a minimum of 35A capacity such as #10 THHN or #8 Nm. 30A plug only has a 3HP rating. It's okay to use 30A breaker, but if you experience startup tripping then up it to a 40A.

Ok so I will get a 40A two pole breaker and at least #10 wire. It sounds like hard wiring it would be better which I don't mind doing. I don't want to do any damage to the compressor. Would there be anything else I would need to hard wire it?

U will also need a disconnect if not within sight of and more than 50' from panel.

I tried looking under the "disconnect" section on the home depot website and I'm not sure what I need. Could you recommend one?

The compressor will be about 10-15 feet from my panel, if there was any issue wouldn't the breaker trip at the panel?

 

[aircommuter]

You might look for an A/C disconnect, just a box with a way to disconnect power, some use a switch , some just a pullout device, those compressors usually have a disconnect at pressure switch that might qualify. It is mainly for you final install, you need a box to connect to anyway, might as well use a disconnet for that purpose.

 

[Spunks]

You might look for an A/C disconnect, just a box with a way to disconnect power, some use a switch , some just a pullout device, those compressors usually have a disconnect at pressure switch that might qualify. It is mainly for you final install, you need a box to connect to anyway, might as well use a disconnet for that purpose.

Ok I understand. What amp should I get? 40A or more?

 

[Norcal]

A pullout A/C disco comes in 3 flavors, 30A, and 60A, fusible, and 60A non-fusible.

 

[Spunks]

A pullout A/C disco comes in 3 flavors, 30A, and 60A, fusible, and 60A non-fusible.

Any one would work?

 

[Spunks]

I do have this from an old dryer. Would this work?

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[wyliesdiesels]

Ok so I will get a 40A two pole breaker and at least #10 wire. It sounds like hard wiring it would be better which I don't mind doing. I don't want to do any damage to the compressor. Would there be anything else I would need to hard wire it?




I tried looking under the "disconnect" section on the home depot website and I'm not sure what I need. Could you recommend one?

The compressor will be about 10-15 feet from my panel, if there was any issue wouldn't the breaker trip at the panel?

The disconnect is for servicing.

But the panel is only 15' away? Is it within sight of the compressor? If so then u dont need a D/C...

 

[Spunks]

The compressor will be in a storage room so I wouldn't say within sight no. I don't mind purchasing a D/C if its really recommended

 

[Norcal]

A 60A non-fusible pullout disco is cheap.

 

[sberry]

In a home garage if the disc was local wouldn't loose sleep over it.

 

[marklc]

Not sure you would need a disconnect at all if you are plugging it in? Unless I missed something which is highly possible LOL.

 

[pattenp]

Not sure you would need a disconnect at all if you are plugging it in? Unless I missed something which is highly possible LOL.

The plug shown earlier is only rated up to 3HP and should not be used as a disconnect for a 5HP motor.

 

[wyliesdiesels]

The compressor will be in a storage room so I wouldn't say within sight no. I don't mind purchasing a D/C if its really recommended

Not only is it recommended but it is required by code since the compressor is not within sight of the panel...

 

[marklc]

I see, ok

 

[Spunks]

Ok picked up a 40A two pole breaker, 60A non-fusible D/C. I have 10/2 and 10/3 wire at home that I want to use. A neutral is not needed in this application correct?

 

[brewchief]

Ok picked up a 40A two pole breaker, 60A non-fusible D/C. I have 10/2 and 10/3 wire at home that I want to use. A neutral is not needed in this application correct?

No neutral but #8 wire should be used if nm(romex), you can use #10 if thhn wire in conduit. A short section of flexible conduit with #10 thhn wire in it can be used to connect to the compressor from the disconnect, can be purchased ready to go as an A/C whip and is often cheaper to buy that way then as individual parts and pieces.

 

[Spunks]

No neutral but #8 wire should be used if nm(romex), you can use #10 if thhn wire in conduit. A short section of flexible conduit with #10 thhn wire in it can be used to connect to the compressor from the disconnect, can be purchased ready to go as an A/C whip and is often cheaper to buy that way then as individual parts and pieces.

Ok I will look into that

 

[Spunks]

Hey guys got it wired up. I ended up using the #8 gauge romex, 60amp D/C, and A/C whip. After more searching on here I learned that THHN wire is better but my local HD only had 500' rolls. I don't need anything near that so I grabbed the cheaper romex (125').

I have been reading about plumbing for it as well so thats next. Whats there is temporary.

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thanks for the help guys

 

[md21722]

Cool basement. Guessing you live in the Northeast.

 

[Spunks]

Cool basement. Guessing you live in the Northeast.

Haha yes sir. Originally thought of keeping the compressor in the garage but now I think its a good idea in keeping it in the basement where its cooler and pipe the air to the garage.