On 18/02/2019 22:12, Kal Ico wrote:
Testing the resistance from each terminal on the heating element to
Earth, with the low-voltage meter, it was about half a Meg Ohm on
each. Could this be a fault that only shows up when under power
and/or heated?

Oh yes.

Half a meg is WAY OK.

I've seen trippy elements at around 10k

Faults I HAVE located that caused trips are as follows.

Water in sewage treatment motor.
Water dripping onto boiler electrics
Water dripping into lighting circuit
Water dripping into motorised valve
Winding to armature leak aroudn 3k in washing machine motor.
Element to earth leak of around 3K in cooker grill element.
Note that actual appliance issues have been fewer than other issues
affecting wiring etc.


--
In a Time of Universal Deceit, Telling the Truth Is a Revolutionary Act.

- George Orwell