120°c?

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Trev114

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Littleton, CO, US
Hi everyone new guy here.
Looking to install a humidifier in a house. It calls for 120°c rated wire. I found wire with that rating but now I'm confused about a disconnecting means. Where do I find one with terminals that are rated for 120°c?
Thank you in advanced
 
Welcome to the forum...

120 degrees C .? Is it hard wired? How many amps? Otherwise you could use an outlet.
But , a lot of them are hard wired so they won't go off if the gfci nuisance trips. We use AC pull out disconnects. I'm not sure about that 120 C
 
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The install likely does not need 120C lugs at the disconnect.

The 120C _wire_ is probably specified by the manufacturer because of the temperature at the humidifier end of the connection, or because of UL requirements at the humidifier end. At the disconnect end the temperature is lower.

The only reason you would need 120C lugs at the disconnect is if you were somehow using the 120C ampacity of the wire, which is not allowed by the NEC, or if the disconnect were located in a high temperature environment.

-Jon
 
winnie said:
The install likely does not need 120C lugs at the disconnect.

The 120C _wire_ is probably specified by the manufacturer because of the temperature at the humidifier end of the connection, or because of UL requirements at the humidifier end. At the disconnect end the temperature is lower.

The only reason you would need 120C lugs at the disconnect is if you were somehow using the 120C ampacity of the wire, which is not allowed by the NEC, or if the disconnect were located in a high temperature environment.

-Jon
Click to expand...

Thank you Jon!
 
winnie said:
The install likely does not need 120C lugs at the disconnect.

The 120C _wire_ is probably specified by the manufacturer because of the temperature at the humidifier end of the connection, or because of UL requirements at the humidifier end. At the disconnect end the temperature is lower.

The only reason you would need 120C lugs at the disconnect is if you were somehow using the 120C ampacity of the wire, which is not allowed by the NEC, or if the disconnect were located in a high temperature environment.

-Jon
Click to expand...
This is same reason we see high temp wire in the whip for things like cooktops or ovens - the load end of that conductor needs to be higher temp rated but the supply end does not. If you somehow placed the disconnect in the oven - then the supply end very likely would need higher temp rating.
 
Just because the specifications call for 120 degrees C rated wire does not mean that the terminals need to be rated for 120 degrees Celsius. There's a difference between operating temperature of conductors and terminations.

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