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15a in-wall digital timer, powering an attic fan on a 20a circuit

15a in-wall digital timer, powering an attic fan on a 20a circuit

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Old 04-29-11, 01:05 PM
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15a in-wall digital timer, powering an attic fan on a 20a circuit

I'm looking to run an attic fan off a 15a in-wall digital timer. The circuit used is 20a. The attic fan/switch will both be hardwired to each other. Is this code compliant?

Consequently, it is code-compliant to have this 20a circuit run to other receptacles within the home? (do gable vent attic fans have any special rules or requirements?)
 
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Old 04-29-11, 01:16 PM
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Originally Posted by HansGruber View Post
The circuit used is 20a. The attic fan/switch will both be hardwired to each other. Is this code compliant?
Yes the switch can be sized to the load, so as long as the fan does not exceed 15A you are okay. Make sure the timer is rated for motor (inductive) loads, not just resistive loads.

(do gable vent attic fans have any special rules or requirements?)
There are no special requirements for the fan. The circuit could not serve a bathroom, kitchen, dining or laundry area. It could serve other living spaces but then the breaker must be AFCI type.
 
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