On 05/01/2018 20:49, alan_m wrote:
On 04/01/2018 21:01, newshound wrote:


So why the trip, especially given the Megger reading? Or is the megger
f**ed?

Did you test it full of boiling hot water - or when drained?


This was cold, it went open circuit first (on a supply without RCD),
only discovered the 30 mA trip when I took it home to test.