![]() ![]() I have used 12/2 to feed a 240V circuit – I fed the cable from a 240V 20A circuit breaker and used a red felt-tip permanent marker to color the white wire. This NM-B cable has an insulation rating of 600V, so it can tolerate 240V operation. If the next owner of your home calls an electrician to rewire the house, he will think that your wall heater is 120V because standard household color coding is : black = +120 volts (Bus A) white = 0 volts (neutral wire) red =-120V bare = equipment ground (no current flow in during normal operation) That is why people are advising you to use 12/3 or 14/3 cable – 3-conductor Romex-type cables have a red jacketed wire in the bundle which is the proper color to use alongside the black cable for the two “hot” wires in a 240-volt circuit. It still would not pass inspection because of the improper color coding of this 12/2 cable. You can drop down the breaker to a 240V 20A circuit breaker and both the cable and the load would be protected. Neither #12 nor #10 is good for 40 amps – both would overhead on a 35A load.The breaker must protect the wire, and if someone comes along and adds load to your heater circuit they could easily overheat the 12/2 and the 40A breaker would just let it fry as long as it never pulls 40 amps. ![]() No, it will not pass an electrical inspection.The breaker must protect the wire, and if someone comes along and adds load to your heater circuit they could easily overheat the 12/2 and the 40A breaker would just let it fry as long as it Yes, it is possible to carry a 2000w 240V load on a 12/2 NM-B cable like this one. No, it will not pass an electrical inspection. Can you use 12 2 wire 240V?Ī: Preguntas y respuestas de los clientes Yes, it is possible to carry a 2000w 240V load on a 12/2 NM-B cable like this one. Many electric dryers also require a 50 amp breaker. However, a kitchen oven can alone require 50 amps. Fifty amp breakers are most often used to power many different appliances. Can 12 gauge wire handle 50 amps?ĥ0 AMP Wire Size – For a maximum of 50 amps, you’ll need a wire gauge of 6. However, it is not preferred to use 12-gauge wire for more than 20 amps current by most electricians. But sometimes 12 AWG (4mm 2 ) wire is also used based on the conductor materials, types of loads, and temperature. Usually, a 25 amp breaker requires 10 AWG (6 mm 2 ) copper wire. 7.0.1 Can I run 12 2 on a 15 amp circuit?.4 Can you use 12g wire on 15 amp circuit?.3.3 How many watts can 12 2 wire carry?.3.0.1 What happens if wire gauge is too big?.2.1 Can you put a 40 amp breaker on 12 2 wire?.2.0.1 Can I use 12 2 wire for everything?.1.3 What size wire do I need for a 20 amp circuit?.1.0.1 What is the max amp for 12g wire?.1 What is the max voltage for 12 2 wire?.0.2.2 Can you put a 30 amp breaker on 12 2 wire?. ![]()
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