I purchased a 120 volt (70 watt) towel warmer that will be hard wired into our bathroom. I have 12-2 wire on a 20AMP breaker already in there that will be used for outlets and lighting.

Should I run a dedicated line for the towel warmer or can I use what's already there?

This is the towel warmer I purchased: 24" KEEGAN HARDWIRED TOWEL WARMER


If you check the installation instructions there is no mention of a dedicated circuit. As long as the additional 70 watts doesn't push your existing circuit over the 80% maximum (1920 @ 20 amps), go ahead and add it to the existing circuit.

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  • I guess I should maybe check the wattage of all of my wife's hair tools like her hair dryer and flat iron :| – bigmike7801 Feb 24 '17 at 20:55
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    @bigmike7801 If anything, you'll want those receptacles uses for hair dryer, etc on a dedicated circuit and everything else on a separate one. – Preston S Feb 24 '17 at 21:21

This is a pretty small load, so it probably won't be an impediment, but you need to follow all the rules for wiring in bathrooms.

If the circuit powers hardwired loads only, this with the other loads can't exceed 80% of total capacity.

If the circuit powers hardwired loads and receptacles, the hardwired loads can't account for over 50% of capacity.

If the circuit powers receptacles in the bathroom, then it can only power things in that same bathroom. NEC 210.11C3

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  • I'm thinking it might be a smart idea for me to power all of the receptacles (somewhere between 5 and 8) plus the towel bar on one 20 amp circuit and then power the lights and 2 exhaust fans on one 15 amp circuit. – bigmike7801 Feb 24 '17 at 21:18
  • 8 receptacles is one hell of a bathroom. Unless you mean receptacles in 3-4 bathrooms. – Harper - Reinstate Monica Feb 24 '17 at 21:21
  • Nope. 8 receptacles in the master bathroom. My wife is a hair stylist and has a lot of hair "tools". She wants at least 3 receptacles above the counter (maybe more) and one in the top drawer of the vanity. Then there will be one in the water closet and 2 different walls will have them too. – bigmike7801 Feb 24 '17 at 21:56

You should have at least one other circuit in that bathroom (considering 8 outlets) and use GFCI protection as well. "HAIR TOOLS" .. many of these are high wattage and therefore you will be sucking a lot of juice.

The towel bar is peanuts compared to the hair tools and other components. Lights and Exhaust fans and Towel Warmer on a 20 AMP , 4 Outlets on a 20AMP GFCI, and 4 Other Outlets on a 20 AMP GFCI. Depending on placement of outlets - try to configure so the load will be balanced. Small price to pay for safe hookup.

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