Crawlspace wiring for humidistat


Old 10-20-15, 05:05 PM
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Crawlspace wiring for humidistat

I am installing a dehumidifier and a humidistat in my crawlspace with the humidistat close to the crawlspace entrance for easy access.

The two wires between the humidistat and the dehumidifier carries 24vac just like furnace wiring.

Is there code for type of wires to use (thermostat wires? bellwires?), and how best to fasten them on the joists? Stapling would be easiest but wouldn't staples cut into insulations on the wires?

Last edited by GroundCurrent; 10-20-15 at 05:27 PM. Reason: typo
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Old 10-20-15, 05:10 PM
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Thermostat cable is the preferred method and you can use insulated staples made just for that cable.
Arrow makes a series of staple guns that are specifically for cables as the staples are round but a little costly for a single job.

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Old 10-21-15, 08:34 AM
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The key word is class 2 wiring -- thermostat and doorbell wiring fall into this category.

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