UK Help with AM2 assessment resit

[GUNNRYAN]

I recently finished my AM2 and unfortunately failed. The only thing I failed on was the earth fault loop impedance. I’m booking a resit but don’t want to fail it again, the procedure I carried out was.
Isolate and lock of the main switch.
Remove the main earth from terminal.
Set tester to L-PE and clip onto the earth.
Test between E-L1, E-L2, E-L3
As soon as the test is complete reteeminate the earth.
Record the highest value.
As far as I am concerned I feel I carried out this test correctly and don’t know where I went wrong, any advice would help.
[automerge]1586894024[/automerge]
Record this value as Ze.
Then calculated the Zs = Ze + (R1+R2)

 

[Ed Evans]

How long did you have to wait for your results i finished Wednesday.?

I had to Measure it as it tells you to in the paper work bit harsh thou!

about a week it depends how quick the results a sent by the centre