Wire gauge

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Old 04-02-17, 08:26 PM
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Wire gauge

Ok here is my situation I have 12/2 wire run to well pump which is 100' from panel box.The pump is a 115 amp pump not 220.
This is on a 30 amp breaker and these are the items I have running from this one breaker.Well pump, 2 - 5000 btu air cond. and ceiling fan,Sterio system all of this could be running at one time on some days.Do I need larger breaker and larger wire or is ok like it is.Thanks for your help
 
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Old 04-02-17, 09:05 PM
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You're running the well pump, 2 A/C's, a ceiling fan and a stereo all on one 12/2 cable on a 30A breaker ?

If that is correct.... you do need larger wire with the correct circuit breaker.
#12 wiring should only be connected to a 20A breaker.

I'm trying to understand what you are doing. Is the pump house a club house ?
 
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Old 04-02-17, 09:08 PM
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This is on a 30 amp breaker and these are the items I have running from this one breaker.Well pump, 2 - 5000 btu air cond. and ceiling fan,Sterio system all of this could be running at one time on some days.
The maximum breaker size for a 120 volt general purpose circuit is 20 amps. Your existing breaker is too large.

If the items are scattered throughout your house you need to run a dedicated circuit that is just for the pump and maybe a light.

If this is all at the pump house your best solution is to instal a minimum of a 40 amp subpanel connected to a 240v 40 amp breaker in your main panel. You will need either 8-3 UF cable direct buried or four #8 THWN wires (two back, one white, one green) in conduit. I'd suggest a 100 amp main breaker panel kit for the subpanel at the well.
 

Last edited by ray2047; 04-02-17 at 09:27 PM.
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Old 04-02-17, 11:31 PM
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You have several issues that need to be taken care of before a fire happens. Please review the above posts for direction.
 
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Old 04-03-17, 02:40 AM
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Disconect

THanks for all the help.I went ahead and put well pump on a 20 amp breaker and nothing else on this but well pump.The other items I had on this right now is not connected to any breaker. I will install another breaker for 2 air conditioner ceiling fan and lights.The 2 air conditioners are 115 volts .What size breaker do I need to use and also wire size.Thanks very much for your help.
 
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Old 04-03-17, 02:48 AM
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Ideally one 15 or 20 amp circuit for each A/C. Then split the lights and ceiling fan between the circuits. Assumes the A/Cs draw 7 amps or less (Usually a 5000 BTU will.) #14 for 15 amps and #12 for 20 amps. Since this is new wiring I suggest 20 amp for each circuit. That will give you a little future proofing. (A 5000 BTU doesn't cool very well and you may need larger ones.)
 
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Old 04-03-17, 04:03 AM
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Wire Guage

Thanks for all the advice.I really do appreciate the help.
 
  #8  
Old 04-03-17, 04:06 AM
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Let us know if you have any more questions.
 
 

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