A 30-amp outlet supplies 3,600 watts (30 amps multiplied by 120 volts). When used in home wiring a double pole breaker is used when a 240 volt service is needed (for a high draw appliance like a range or dryer). So to get an idea of what 30 amps might run in an rv, what can you usually run at the same time without causing too much strain on, or issues with, your 30 amp hook up? As to the use of single pole breakers for a multiwire branch circuit, that is a code violation unless the breakers are tied together with a handle tie from the manufacturer. Single-Pole Circuit Breaker has a tin-plated copper stab to create a reliable, permanent and corrosion-resistant connection. You can't use tie wire, a nail, or any other unapproved method. This represents how many amps the controller can handle, in the case above, 30 amps. And yet the unit only has a 30 amp breaker, does only 1 heating element work at a time? The electric dryer uses a 30 amp breaker. A PWM controller will have an amp reading for it, for example 30 amp PWM controller. A 15 amp circuit breaker should trip at 15 amps regardless of the load voltages or impedances. For example, a two-pole breaker at 15 amps on each pole (breaker handle) would supply 240 volts to the appliance on that branch at up to 15 amps, not 30. A water heater though, uses a 30 amp breaker. If an appliance attached to a 120V energy source requires 1200 watts to run, it will automatically pull 10 amps of current through the line. 50-amp plugs have two 120-volt hot pins, a flat neutral pin, and a round ground. However, a double pole breaker is essentially two breakers tied together with a handle tie, so it can … The GE Q-Line 30 Amp 1 in. The breaker case is made of heat-resistant thermoset for stability and structural integrity. Thanks for the feedback but see I'm putting Christmas lights up and i balanced the amps out on these circuit breakers with the amp meter. Even if this is true, this means the water heater uses 25 amps. On the other hand, large RVs usually have 50-amp service to power their more lavish setups (think double AC units, washer/dryers, etc.). These are both 20 amp breaker and I'm at 18.6 and 18.9 on the other but they didn't blow after burning the lights for over 4 hours but the circuit breakers were warm to the touch. Generally the two things you want to look at in a PWM controller is the amperage and voltage rating. When it comes to designing a circuit breaker panel, you must understand how the appliances "pull" current. Say it is a good, quality hook up with proper wire sizing etc. You will have 60 amps of 240 volt power available. Better yet, you can use a common trip 2 pole breaker. A double pole circuit breaker provides an appliance with 2, 30 amp, 120 volt services, for a maximum draw of 30 amps at 240 volts. Single-Pole Circuit The GE Q-Line 30 Amp 1 in. It has two 5600 watt heating elements in it, which is 11,200 watts. Therefore, the breaker on that outlet could meet code and still trip anywhere between a total load of 2,880 watts (80 percent of 3,600 watts) and 4,320 watts (120 percent of 3,600 watts). A single breaker normally has 120V. A 30-amp RV can handle up to 3,600 watts; a 50-amp RV puts you up to 12,000 watts, so the increase in power is quite substantial. At 220 volts, this is 50 amps!