Nate Core Practice Test

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Prepare for the Nate Core Test with flashcards and multiple choice questions. Each question includes hints and explanations to ensure you are well-prepared. Boost your confidence and enhance your readiness for the exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the expected amp draw on a hot water heater element with 4,500 watts at 220 V?

20 Amperes
21 Amperes
22 Amperes
23 Amperes

The correct answer is: 20 Amperes

To determine the expected amp draw on a hot water heater element, you can use the formula: \[ \text{Amperes} = \frac{\text{Watts}}{\text{Volts}} \] In this case, the hot water heater element is rated at 4,500 watts and operates at 220 volts. Plugging in these values: \[ \text{Amperes} = \frac{4,500 \text{ watts}}{220 \text{ volts}} \] When you perform the calculation, you find: \[ \text{Amperes} = 20.45 \text{ Amperes} \] When considering the context of amp draws, it is common to round to the nearest whole number based on typical electrical practices. Thus, this value corresponds most closely to 20 Amperes. Understanding this calculation is crucial because it allows HVAC technicians to size wiring and circuit breakers properly, ensuring safety and efficiency in electrical systems. Additionally, knowing how to apply basic electrical formulas is a fundamental skill for anyone working within the HVAC field.