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Old 05-27-2013, 05:31 PM   #1
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14/2 bath vent fan on 20 amp circuit


While replacing a pair of switches in the bathroom of a house I recently purchased, I noticed that 14/2 was attached to 12/2 wire in the switch box.

The bathroom is connected to a 20a breaker, and the 12/2 feeds the bathroom light, one outlet, and the vent fan. Both the 14 and 12 wire look relatively new.

Removing the 14/2 will be a mess, and I think that the vent fan won't pull enough amperage to be a fire hazard. However little things like this bother me and would keep me up. I don't want to replace the breaker with a 15a. Am I ok with one fan on 14/2, or would you replace it?

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Old 05-27-2013, 05:39 PM   #2
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14/2 bath vent fan on 20 amp circuit


replace the 14/2.

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Old 05-27-2013, 06:07 PM   #3
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14/2 bath vent fan on 20 amp circuit


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replace the 14/2.
+1 ...
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Old 05-27-2013, 07:10 PM   #4
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14/2 bath vent fan on 20 amp circuit


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+1 ...
I'm a little surprised. I figured people would tell me to live with it like it is even though it isn't ideal.

Ugh! This would be less painful if the bathroom wasn't the one room that is nicely finished and painted.
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Old 05-27-2013, 07:18 PM   #5
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14/2 bath vent fan on 20 amp circuit


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I'm a little surprised. I figured people would tell me to live with it like it is even though it isn't ideal.

Ugh! This would be less painful if the bathroom wasn't the one room that is nicely finished and painted.
If it wasn't the bathroom, you could change the breaker to 15 amp.
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Old 05-27-2013, 07:26 PM   #6
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14/2 bath vent fan on 20 amp circuit


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If it wasn't the bathroom, you could change the breaker to 15 amp.
Yeah, code and my wife's various hair-related power tools make that a poor option.
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Old 05-28-2013, 01:32 AM   #7
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14/2 bath vent fan on 20 amp circuit


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If it wasn't the bathroom, you could change the breaker to 15 amp.

Total newb question, I thought only GFIs were needed for rooms with water fixtures? 20amp is needed?
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Old 05-28-2013, 07:09 AM   #8
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14/2 bath vent fan on 20 amp circuit


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Total newb question, I thought only GFIs were needed for rooms with water fixtures? 20amp is needed?
Yes. Bathrooms are required by code to have a 20 amp circuit.
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Old 05-28-2013, 12:10 PM   #9
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14/2 bath vent fan on 20 amp circuit


You cannot put 14 gauge wire on a 20 a circuit, has to be at least 12 gauge
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Old 05-28-2013, 08:57 PM   #10
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14/2 bath vent fan on 20 amp circuit


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You cannot put 14 gauge wire on a 20 a circuit, has to be at least 12 gauge
Please read the OP prior to sharing.
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Old 06-07-2013, 03:31 PM   #11
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14/2 bath vent fan on 20 amp circuit


Calculate the load of all the power tools to obtain exact ampere requirement of circuit breaker. The circuit breaker capacity should be approx 1.5 times the total load used.

assembling pcb

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Old 06-07-2013, 03:48 PM   #12
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14/2 bath vent fan on 20 amp circuit


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Calculate the load of all the power tools to obtain exact ampere requirement of circuit breaker. The circuit breaker capacity should be approx 1.5 times the total load used.
That is completely incorrect in this case.

A bathroom, which is what he's talking about, has to be on a 20A circuit. If your "calculated load" is 1A, it has to be on a 20A breaker. Which in turn has to be on 12g conductors.
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Old 06-07-2013, 05:16 PM   #13
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14/2 bath vent fan on 20 amp circuit


The wire could melt before the breaker tripped if you left it with 14-2 wire.
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Old 06-07-2013, 06:25 PM   #14
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14/2 bath vent fan on 20 amp circuit


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The wire could melt before the breaker tripped if you left it with 14-2 wire.
No it wouldn't, but thats another story for another day...
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Old 06-07-2013, 06:48 PM   #15
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14/2 bath vent fan on 20 amp circuit


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No it wouldn't, but thats another story for another day...
You had to, right?
I was gonna let that one go myself. LOL

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