GracePESDs® - Voltage Indicators
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      Q: What voltage can my megger be set at to test the R-3W voltage indicator?

      A: The R-3W series voltage indicators are rated to 750V AC 3 phase or 1000V DC continuous @ 55C ambient. If you wish to expose any combination of 2 of the 4 wires input wires to a 1000V DC potential, it should not hurt the indicator.