![]() ![]() This just simply separates the ground circuit and neutral circuit versus having the ground line act as a neutral in the older circuit above. The neutral line is a return line for the voltage and should not be done through the green ground wire, even though a neutral and ground are really the same, so new codes require a dedicated neutral line as well as a dedicated ground line. ![]() The difference between this diagram and the 4-prong outlet below is the addition of a neutral wire. Turn off the power to the panels breakers and hot bus bars by switching off the main breaker. If your running a new circuit, I highly recommend that you bring your outlet up to code and install a 4-prong dryer outlet. 1.Open the door to the electrical service panel. Smaller capacities apply to aluminum wire and for. BMitchs table of values is only for copper wiring for lengths up to 80100 feet (2530 m). That is, a 50 amp breaker cannot be used on a wire rated for 30 amperes: doing so would allow the wire to overheat leading to a house fire. Now a 3-prong outlet is outdated from modern electrical codes but is accepted if you already have one in your home. The breaker for the circuit cannot exceed the wire rating. This size breaker requires a minimum of a #10 gauge wire so this wire used would be a 10/2 with ground. This circuit originates from the breaker box containing a 2-pole 30 Amp breaker. Measure the room or rooms where you’ll be installing the new branch circuit, and draw a detailed, accurate floor plan. Work during the daytime as you will need to shut off all power in your home during most of the project. This makes sense to me, but Im thrown off by the double-pole configuration. 1 Plan the Circuit To wire a new circuit, identify an open slot in your breaker box for a new circuit breaker. Inspector notes that 10 wire should be used for 30-amp circuits so that the wire does not melt before the breaker can do its job in an over-current situation. ![]() 15A at 240V transforms to 30A at 120V - more than enough. In the breaker panel its hooked up to a 30-amp double pole breaker with 12 wire. Doubling the haul voltage cuts current flow in half, and cuts haulage losses by 3/4. America does have a standard for 240V and its as good as Europes. The 3 prong wiring diagram above shows the proper connections for both ends of the circuit. Rewire the faraway receptacle for 240V get a transformer. ![]()
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