When setting the range on a DMM for a voltage measurement of 480 volts DC, the range should be set on ___.

Prepare for the IEC Year 2 Part 1 Test. Use flashcards and multiple choice questions with hints and explanations. Get exam-ready!

When measuring a voltage of 480 volts DC with a digital multimeter (DMM), it's important to choose a range that safely accommodates the measurement without exceeding the limits of the selected range. The appropriate range must not only be higher than the voltage to be measured but also provide an accurate reading without risking damage to the meter.

Setting the range to 600 volts is ideal in this situation. This range comfortably exceeds the 480 volts DC that will be measured, ensuring that the meter operates within safe limits. Additionally, using a range that is too low could lead to an overload condition, potentially damaging the multimeter or causing inaccurate readings.

A 750 volt or 1000 volt range would also accommodate the 480 volts measurement, but selecting the 600 volt range is more efficient because it keeps the reading within a closer range to the actual measurement, resulting in better resolution and accuracy. In the case of a 300 volt range, it falls short of the required measurement, risking overloading the DMM and damaging it.

Thus, for a voltage measurement of 480 volts DC, setting the DMM to the 600 volt range provides both safety and accurate data capture.

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