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The pump is 115v 9 amp draw. The run length from breaker box to outlet is between 70 and 75'. I have a coil of 14/2 left over from my barn wiring project. I've done some online checking and think I am ok with this setup but you can never have too much info. Thanks for the help.

  • Is this a cord-and-plug connected pool pump, or a hardwired one? Is the pool a storable type or a permanent pool, and if it's storable, what size is it? – ThreePhaseEel Jul 6 '19 at 20:41
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Sorry to disagree with Harper on this but I would always run a minimum of 12-gauage wire for a 9-Amp pool pump with a circuit run of 75-feet. The pool pump is going to be considered a continuous load. This will require a buffer factor of at least 25%. A continuous load at 75' would require another deration factor. A pool pump is not an incidental load. 14-guage wire is designed to carry minimal loads. And a pool pump/motor is an expensive item. We shouldn't take a chance on taxing that motor with inadequate wiring.

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You can't use interior wire (NM aka Romex) for outdoor, underground or outside conduit applications. As an example if the cable contains that paper wadding, that's a big no-go. You need UF cable if direct burying, or that or THWN-2/XHHW individual wires for conduit.

#14 NM is generally white (rarely black). UF is gray.

Voltage drop wise, that sounds fine. You don't even need to think about voltage drop til at least 60' on a 120V circuit, and even then only if you are running at hard circuit limits (which you should not) and believe in 3% (which you should not).

Given that you are well under 15A, and 3% isn't that important for a panel-final load run, you are fine.

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