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Old 03-08-2010, 07:19 PM   #1
 
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Exhaust fan- Bathroom


I purchased an exhaust fan that states it is "UL Listed for installation over a tub or shower on a GFCI circuit".

Why would something that is required to to be GFCI protected, which would require it be on a dedicated 20 amp circuit, have both 16 and 18 ga. wire?

So, I would have to rewire the entire fan, go back and find a new fan or install another GFCI receptacle on a 15 amp circuit and be out of code?

Any advice????
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Old 03-08-2010, 07:56 PM   #2
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There are different rules for manufacturers. Light/fan manufacturers are allowed to use smaller wire than homeowners, probably since the load on those devices is known.
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Old 03-08-2010, 08:02 PM   #3
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The gauge of the wires on the fan don't have to match the amperage of the circuit because the fan/light will only pull a low amount of amps; an amount that is small enough to safely travel on 16 and 18 gauge wire. Like most any light fixture you buy, the wire leads from the fixture are smaller than 14 gauge, yet they get twisted together with 14 or 12 gauge wire from the house circuit.
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Old 03-08-2010, 08:06 PM   #4
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NEC only covers home wiring
A 20a circuit can carry 2400w....your fan does not

GFCI can be a 15a circuit
Exhaust fans can be used anywhere



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