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Sizing conductors for spa hook-up

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08-19-14, 06:12 PM

NC Fixer

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Sizing conductors for spa hook-up

The manual for an outdoor spa specifies a 50 amp main breaker and #8-3 wire to run to the subpanel (up to 100')
My question is, the spa is 210' away from the main panel. Is there enough safety factor allowed using 8 gauge wire, or should it be larger (#6 ga?)
Is the 50 amp breaker OK in either case?
Thanks everyone.

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08-19-14, 06:55 PM

pcboss

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The 8-3 if NM is only good for 40 amps. You need at least #6. Once outside the house the ground will need to be insulated.

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08-20-14, 07:36 AM

CasualJoe

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Quote:

My question is, the spa is 210' away from the main panel.

How much of that is outside the house?

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08-20-14, 07:43 AM

johnsc

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run a 4 wire ,#4 gauge feed to a sub panel by the spa

you might use the 100 amp al trailer service from lowes.

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