Delaware residential appliance installer license prep class free download

Correct Answer: Ohms Law: I = P/E = 11000 watts / 240 volts = 46 A.Use Ohm’s Law to calculate what the load current would be, given that a 11,000 watt electrical hot tub (spa heater) is connected to a 240-volt residential service?.Correct Answer: NEC – Table 8, Chapter 9 for circular mil conversion and “k” calculations L = Vd x CM/(2 x I x K) = 120V x 3% x 6530CM/(2 x 13.8A x 12.9) = 66 feet.Use Ohm’s Law and the NEC to calculate the what the maximum distance would be between the source voltage and a motor load given the following conditions 120 VAC, 1 HP pump motor, 13.8 amps FLA, 12 AWG copper, and Maximum voltage drop of 3%.A swimming pool branch circuit when properly derated with THWN copper conductors would be a minimum size of what, given a load of 208 V, 3 HP, single-phase, continuous duty operation motor?.

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Delaware residential appliance installer license prep class free download