Testing & Inspection queries

[danny124]

Im doing my test and inspection assesment, but racking my brain how to go about testing for this job

1st job = Im using my workshop shed as my assesment. I have run a new 25m SWA up to the shed with its own CU in the shed, with a isolation swtich understairs in the house to isolate it when not in use.
2 circuits in the shed (lighting, Sockets Ring) all supplied with RCBO's

With the testing for this would they like to see continuity and insulation resistance test for the SWA.
also PFC, Ze test etc would they want it to be done at the main isolation switch understairs and in the CU in shed


2nd Job = Also someone was saying everything has to be connected for the Insulation resistance test. I have spot lights on downstairs circuit. Surely you cant do the isulation resisitance test with those connected because they will be damaged. Or do you now test them at 250v range and does this still damage them, or will the L&N together and earth on 250v.

or do you simply not connect the spots until the IR is complete.


Am i having a blonde monent here haha.

Thanks for your time guys

 

[stef]

Hi Danny,

for the insulation test on an existing installation: just link out neutral and line of that circuit and do the
test to earth so you avoid damage to connected equipment.Note this in your certificate. Imagine
you do an insulation test in a giant warehouse with 1000 light fittings with electronic starters - nobody
expects you to disconnect them all.

Ze ha to be measured at origin of supply with circuits isolated, same for PFC

 

[danny124]

hey stef thanks for your reply..

my assesment is for domestic rewire as not done much testing before just trying to get my head around a few things