Insulation resistance on RCBO board?

[GOGO]

HI all, new to this site so bear with me.

Is there any way of testing the insulation resistance on an RCBO board without having to disconnect the conductors from the RCBO??

half the connections are usually chewed up or over tightened and break when trying to dissconnect.. which is costly.

Can this be input as a limitation on the test cert for the ones that are impossible to disconnect.

 

[Graeme Harrold]

You need to remove the fly lead in most cases. Just check with the manufacturers website.

 

[GOGO]

even with the fly leads removed readings are below 1Mohm.
Your practicaly doing full fuseboard install.

 

[DurhamSparky]

the fact your readings are below 2 Mohm should raise eyebrows...! disconnect the RCBO and test again (make sure you remove neon and unplug equiptment and turn lights off or remove bulbs!

if its still below 1meg than you got problems!!

 

[telectrix]

agreed. pull em out. first explain to client that he may have to pay for your "destructive " testing! it's not your fault somebody has overtightened em.

 

[GOGO]

telectrix - No "distructive" testing. And if anything breaks the cost is all mine buddy NOT THE CLIENT.

Anyway: You get a low reading through the rcbo even with the fly leads disconnected. Once either one of the conductors (phase or neutral) are disconnected from the rcbo the readings are >500Mohms.
Just wondered if there was a way without having to do this.
cheers for the constructive feedback