Subpanel to a pool


Old 03-15-06, 06:04 PM
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Join Date: Mar 2006
Posts: 1
Question Subpanel to a pool

I plan on installing a pool heat pump which will require 220v 50amp. The present pool pump is on 110v so I hope to change to 220v when I install the heat pump. I plan on installing a subpanel (125amp) with 50amp gfi for the heat and a 20 amp gfi for the pool pump (70 amps used). The main panel is 180ft and I can install a 70 or 100 amp breaker. The cable will be buried. The main does have the space and amps needed. Several questions:
1. What size wire should be run and what size breaker at the feed?
2. Should I run 4 wires to the subpanel or wire it as a service entrance with 3 wires from the main with a ground rod? The panel instructions have both options. The 3 wire cable is much less expensive. I can run copper or AL.

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Old 03-15-06, 06:13 PM
Join Date: Sep 2003
Location: Central New York State
Posts: 13,973
You can't run cable period. You must run individual conductors in conduit. You need four conductors.

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