Replacing wall light switches


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Old 02-15-20, 04:22 PM
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Red face Replacing wall light switches

Hello,
I am starting up a home project to replace about 30 wall switches in my home. I am replacing switches that run on various lights and fans to rocker style switches. I know I need to match the wattage the light or fan takes with what the switch handles. Do I simply add up the wattage of the lights the switch would run on? Some switches turn on a single light, maybe 100 watts max. Other switches turn on multiple lights or a chandelier. Some turn on a bathroom ceiling fan. How do I figure out wattage for a bathroom fan? Would a fan say the wattage?
Thanks,
Paul
 
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Old 02-15-20, 04:28 PM
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Welcome to the forums.

For the most part..... standard wall switches come in one rating. Typically for a 15A load.
There are 20A available for loads like disposers and heavy load appliances.

Dimmers are a different story. Although most handle 600 watts.... some are less depending on incandescent or CFL/LED operation.
 
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Old 02-15-20, 06:06 PM
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A tip for you.
If any of your circuits are three way switches replace one switch and test it. It is much easier to fix a three way issue when you know only one of the switches is wrong.
 

Last edited by joed; 02-15-20 at 07:46 PM.
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Old 02-15-20, 07:34 PM
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Thank you. This is very helpful. If I did the calculation correctly, a 15 amps would be 1,800 Watts with 120 volts.
 
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Old 02-15-20, 07:39 PM
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Right, I have single pole, 2 way and 3 way switches that I need to replace.
 
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Old 02-15-20, 07:53 PM
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Single pole (2 wire) and 3 way (three wire).
 
 

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