Cooker Cable Zs Test (Error Reading)

[Bob Nicholson]

Happy Easter,

Just been to change over an oven, which seemed straight forward enough!

Did the dead tests OK - R1 +R2 and the Insulation resistance tests at the flex end but once I re-energised the cct I got an Error reading on the Zs test (No Trip). The High Reading took out the RCD (no surprise).

Tried the sockets and found a decent Zs reading. Am I missing something basic here?

Any ideas?

thanks

 

[Lurch]

What tester, and what error exactly?

 

[Bob Nicholson]

Megger 1552 - Errp

 

[Andy™]

did you connect black probe?

 

[sellers]

[quote name='Andy

 

[sparkytim]

As above

i.e.

to get a reading on no trip range you have to connect all 3 leads

 

[m4tty]

^^^^ what they said