That's funny! When in use it is 120 volts.... I do not call that a megger test for house wiring. Maybe a megger test for automotive work. Interesting to note, Megger has discontinued those really low voltage meggers, and now they go to 1 KV. You can still do 50 volts for electronic circuits.Brief 100v Megger readings H-G can see end-of-service life for equipment that continuity testers can not.
Nope! Megger's modern MIT 430/2 series still has 50v / 100v / 250v / 500v / 1kv.Megger has discontinued those really low voltage meggers
Yes, manufacturers may even have a Hi-Pot test for new THWN in the 1kv range, but do you really expect 60yr-old rubber & cloth to survive 1500 volts, as suggested earlier?600 Volt wire is good for more than 600 Volts for brief times, as a service factor is already in there. It does not fail at 700 volts.