Technical Standards and Safety Authority (TSSA) G3 Practice Exam

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Prepare for the TSSA G3 Exam. Study with quizzes, flashcards, and multiple-choice questions. Each provides valuable hints and detailed explanations to ensure readiness for your exam!

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How much is the kilowatt output of an electric heater with a 240 volt supply that draws 50 amps?

12
120
1,200
12,000

The correct answer is: 12

To determine the kilowatt output of an electric heater, you can use the formula for electrical power: \[ \text{Power (in watts)} = \text{Voltage (in volts)} \times \text{Current (in amps)} \] For this scenario, the heater operates on a 240-volt supply and draws 50 amps. By plugging the values into the formula, you get: \[ \text{Power} = 240 \text{ volts} \times 50 \text{ amps} = 12,000 \text{ watts} \] Next, to convert watts to kilowatts, you divide the number of watts by 1,000: \[ 12,000 \text{ watts} \div 1,000 = 12 \text{ kilowatts} \] This calculation shows that the electric heater indeed outputs 12 kilowatts. Therefore, the correct output for the heater is 12 kilowatts.