Installing 6awg cable to pool pump

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Old 05-26-18, 12:15 PM
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Installing 6awg cable to pool pump

I have a voltage drop problem and need some education. Total run is 160 ft. 80 interior and 80 exterior. Pump needs 110 volts, draws 13.5 amps. Based on a voltage drop calculator, I believe I need to run 6/2 nm cable from panel to exterior junction box, then run 6/2 uf-b cable to the outlet to provide the needed voltage.
how do i connect 6/2 cable in the sub panel?
In the junction box?
At the outlet box?
I successfully installed wiring for the previous pump, but this requires larger cable than I have used before.
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Old 05-26-18, 12:39 PM
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The ground needs to be insulated outside. You cannot use UF.

Number 6 can be spliced with large blue or grey wire nuts .
 
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Old 05-26-18, 02:11 PM
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You really need to consider converting the pump to 240v if at all possible.
 
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Old 05-26-18, 07:24 PM
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Converting to 220

Thankfully, the pump is designed to detect 110 or 220 voltage. Running 220 is definitely doable. Does 220 help with voltage drop?
 
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Old 05-27-18, 06:03 AM
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Hi, at 240 volts you will be cutting the amperage in 1/2 thus cutting the conductor size, for a 160 run number 12 would be plenty large enough.
Geo
 
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Old 05-27-18, 09:58 PM
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I'm not aware of a pump that detects 120/240v. Usually the pump gets converted to 240v by moving jumpers in the junction area.

At 7A... the load will be fine on #12 wiring. Converting that line for 240v use would mean you'd have to use a single 240v receptacle and there would be no 120v there for anything else.

My pool has a similar sized pump. I ran four #12 wires so that I have 120/240v power. I run the pump on 240v and the pool and pumphouse light on 120v. I set a small 4 circuit panel in my pumphouse.
 
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