You would be better running heat trace on the line covered with foam insulation. It’s self regulating so you wouldn’t have to worry about it. In NY that’s what they do for the water supply line in trailers where it exits the ground and attaches to the plumbing.

Last edited by Phak1; 12/20/2019 1:00 AM.
Phil
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1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
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