Downlight

[m4tty]

Hi,

If you were called to a job where the homeowner had installed downlighters in bathroom but one had overheated (faulty) melting the cable. You took the downlighter down and there was enough slack in the cable to reterminate into new downlighter. What tests would you do to check the cable was ok as these are class 2 and the earths have not been joined and ceiling has been boarded/plastered. So cant do r1plusr2. Would you do IR L/N at the board on the lighting circuit?

Thanks in advance

 

[green-hornet]

Under the current regulations, right or wrong, all circuits (even class 2) must have rcd protection.(circuits entering a bathroom).

Continiuty of earth can be maintaned, providing it is correctly terminated and not cut off, as in many cases.

So it should be possible to do a r1+r2 check.

If you are replacing like for like, you would issue a minor works certificate, so you would have to fill in as much as you could reasonably do.

From the NICEIC certs I use this would include the following tests.

Circuit resistance

Insulation resistance

confirmation of the adequancy of protective bonding

confirmation of correct polarity

Maximum measured earth fault loop impedence

Rcd oprating time x1 and x5 if fitted.

However since Part P is never enforced, unless a danger is found, just replace and say goodbye to the client.

Worry about the implications when Part P actually starts to mean anything.