Loop test on RCD circuits.

[sparkdog]

I see quite a lot of posts about doing loop tests and RCDs tripping as a result.There is a simple way described in Christopher Kitcher's Practical Guide to Inspection,Testing and Certification of Electrical Installations second edition page 85 whereby you can use a high current loop tester on an RCD protected circuit without tripping it or having to link out the RCD.I won't say what it is in case I infringe copyright.Perhaps its already well known but I thought I would mention it.

 

[Des 56]

DC saturation?

 

[sparkdog]

No,just a simple link in the right place remote from the cu.Best to look in the book if you can.

 

[Keith the beef]

Damn i haven't go that book

 

[c.boy]

No,just a simple link in the right place remote from the cu.Best to look in the book if you can.

live to earth at furthest point?

 

[CT13]

If it's already a well known procedure, I doubt you'll infringe copyright by simply explaining it unless you want to cut and paste a section directly from the book itself.

 

[sparkdog]

Yes,RCD off and one probe to main live incomer and other to RCD out.

 

[crabapple]

hi current and rcd??

cant be done unless u use a no-trip tester or calculate it

ur not supposed to link out the rcd to do loop tests