SELV Testing

[smokey73]

Hi can anyone give me any advice on how to test a lighting radial with selv in them do i have to remove the transformer been told it could blow it if i carry out the normal test. Only thing is i cant get to it its under a wooden floor

HELP!!!

 

[Amp David]

Can you not get to the transformer throught the light hole. Or is it not for downlights?

 

[ezzzekiel]

depends what test you are talking about, ins resistance im assuming, if so and you have no access then join the line/neutral together for circuit and test to earth.

 

[smokey73]

no its up there somewhere but not found it tacked to the joist or fixed.

 

[smokey73]

line and neutral i get but if i can get to it what then

 

[kung]

You can either test at 250v ir test or as said link out l-n then no potential will flow so wont damage anything on a 500v ir test but you need to note this on cert as L&N+E easier than disconnecting the tranny.