Which device would you use to measure insulation deterioration on wiring?

A megohmmeter is specifically designed to measure high resistance, which is crucial when assessing the insulation integrity of wiring. This device applies a high voltage to the wire and measures the resistance of the insulation material surrounding the conductive parts.

When insulation deteriorates, the resistance drops, potentially allowing for current leakage, which can lead to short circuits or electrical hazards. The megohmmeter provides a quantitative measurement of this resistance in megohms, determining if the insulation is still effective or if it needs replacement.

Other devices such as a multi-meter, clamp meter, or digital voltmeter do not specialize in assessing insulation integrity. A multi-meter is generally used for lower voltage and current measurements, not for the high resistance and specific insulation testing required. A clamp meter measures current without disconnecting the circuit and does not assess insulation performance. A digital voltmeter is used to measure voltage levels and is not suitable for evaluating the condition of insulation.

Thus, utilizing a megohmmeter is the optimal choice for evaluating insulation deterioration on wiring, ensuring safety and effectiveness in electrical systems.