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Question:

What gauge electrical wire do I need?

I need to run the following:2 x 50 watt filter2 x 500 watt heaterAnd the place that I need to run it is about 300 feet away. What gauge electrical cord do I need???Thanks in advance!

Answer:

never use 14gauge wire for your 300foot run it would be best to use 10 gauge wire my guess is that this is for a pool or spa . and it would be safe to use the small weatherproof electric breaker panel right close to your equipment and use th
for a 300 foot run you will need a # 6 wire, and that ain,t cheap. 100 foot is the longest run recommend, if you can have the power co put in a new meter pole there,
According to your figures, you are gonna have about 1100 watts load, that would normally need a 14 gauge supply line with a 15 amp circuit breaker. However the 300 feet run will change that, there is gonna be quite a large voltage drop for that distance. I would run a 10/3 and use a 20 amp circuit breaker. That is assuming that you will not have anything else on the circuit. If you do then I would go with a 30 amp breaker. Also if this is gonna be running out side you will need to get wire that is rated for that. Personally I would use bury able wire and enclose it in 2 inch PVC, buried at least 24 inches.

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