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pool wire

What is the typical gauge wire use to wire 50 amp pool circuit
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Posted 2018-06-19T15:28:25+0000  by house1 house1
Hello house1.  Welcome to the Community!

There are 2 issues when determining the best wire size for a given load application. 

First there is the absolute minimum wire size you can use given the circuit amperage, and thus the breaker rating.  For a 50 amp circuit, the minimum copper wire size is 8 gauge unless you are using NM-B or UF cable which then is 6 gauge.

Second is the acceptable voltage drop based on how long the circuit run is.  Typically a 3% drop is the max you should accept, and less is better.  For runs of 50 feet or less, the above sizes work.  Beyond 50 feet you will need 6 gauge, (or larger like 4), in order to maintain full voltage.

Personally, I would recommend 6 gauge wire for your 50 amp pool circuit unless you have more than a 100 foot run to wire up.

Here's a table for ampacity, and another link for voltage drops.


Posted 2018-06-19T18:08:51+0000  by Chris_HD_CHI
The short answer is if you're asking the question, you are probably not qualified to do the work.  Please don't take that the wrong way but combining water, electricity, family, and friends isn't the place to start learning about electrical wiring.  NEC article 680, which covers swimming pools, is very complex and best left to professionals with experience doing that kind of work.
Posted 2018-06-20T23:57:55+0000  by Adam444
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