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Richard_K
11-20-04, 02:57 PM
I have installed a 240-volt heater with a wall mounted thermostat I am
using 14-2 wire. I was told a builder who talked to an electritian about
the wiring with 14-2, he said use 2-15 amp breakers and make white
and black hots. Is this right? And if this is how do I connect them to
the heater and thermostat? I now have no power to the heater with
the way I have it hooked up now.

hvac4u
11-22-04, 04:24 PM
i am concerned with the wire size, 14 will not carry much amperage at all. 2 single pole breakers, one powering white and one black is not at all how it should be done

a double pole 30 amp (if that is what is called for) with a #10 at least is what i would do

how many amps are we talking about here?

mattison
11-23-04, 04:19 AM
With Hvac for sure all the way. You never want to use 2 seperate breakers on an appliance. If there is a short and it needs to trip the breaker you want it to kill both legs not just one.

shakernva
11-25-04, 11:11 AM
Please listen to HVAC! 14 gauge is way too small for your job..not only will it continually blow circuits (if you're lucky)-it will not carry the load and is a tremendous fire hazard
go with #10 and 30 amp breaker.

skohlmey
11-26-04, 10:57 AM
14 Gauge wire might be penty for a single heater. It depends on how large/watts your heater is. For example, a 1500 watt, 240 volt heater will only pull about 6.25 amps. Using a pair of 15 amps breakers is plenty for 1 or two heaters. However, I disagree with using 14-2 wire. I would use 14-3 wire - the red and black are hot, the white is neutral, and bare is ground.