R2 test on a ring main where the conduit is the earth

[telectrix]

couple of grand, if i remember.

 

[Engineer54]

Ive never come across or wired a conduit system using it as the earth. Always been in the spec that separate cpc needed. What is a high current doctor thingy then 54?

Shouldn't really be calling it a Ductor tester really, as Tony Say's a true ductor tester is generally a high current milli/micro ohm tester!! It's basically a high current ohm meter that tests the bonding/continuity of conduit/trunking containment systems on a wander lead basis. Most used to know these bit's of kit as the ''Clare Tester'' The early ones used to come in an integral wooden case...

Never seen a professionally produced electrical specification that calls for a separate CPC to be pulled into a metallic containment system, as it's a costly and totally pointless exercise!!!

 

[VoltzElectrical]

well so far I have done two schools, a college, a hospital and a fire station in steel trunking and conduit and have pulled in same size pvc single cpc in every one. Labour only so I'm not worried about the cost lol.

 

[Engineer54]

I'll just point out again, a totally pointless and costly exercise!!

Thankfully, i've never seen such a specification in all the years i've been in the industry!!

 

[Knobhead]

Most used to know these bit's of kit as the ''Clare Tester'' The early ones used to come in an integral wooden case...

Woe betide you if you forgot to put it on charge at the end of the day!
God help you if Jim the tester’s mate found you’d got dirt on the polished wooden case! The ones we had wouldn’t have looked out of place on mother’s sideboard.

 

[Engineer54]

Woe betide you if you forgot to put it on charge at the end of the day!
God help you if Jim the tester’s mate found you’d got dirt on the polished wooden case! The ones we had wouldn’t have looked out of place on mother’s sideboard.

Many of these conduit testers were mains powered units, in fact i can't say that i've used a battery unit myself... lol!! But your right about those older wooden boxed units, works of art they were!!...lol!!