help with testing?

[markisgood]

Im about to extend a ring main with one double gang RCD socket, im a bit in the fog regarding testing, i understand that i will have to fill out a minor works form? what tests will i need to implement? i have been told that i do not need to do a earth loop or a PSC at the main board for minor works job is this right? my belief by what i have read is i do the following:

Continuety (R1 R2)

Installation resistance (obviously with RCD taken out)

Polarity

Earth Loop at all sockets on cct recording the highest reading

Rcd Test

 

[comms]

Im about to extend a ring main with one double gang RCD socket, im a bit in the fog regarding testing, i understand that i will have to fill out a minor works form? what tests will i need to implement? i have been told that i do not need to do a earth loop or a PSC at the main board for minor works job is this right? my belief by what i have read is i do the following:

Continuety (R1 R2)

Installation resistance (obviously with RCD taken out)

Polarity

Earth Loop at all sockets on cct recording the highest reading

Rcd Test

Ring continuity ( r1 r2 rn & R1 + R2 & will proove polarity if done right)
IR
EFLI
RCD test

 

[markisgood]

just looking at the job i am to do again, i have noticed that the socket i will be extending from has an earth terminal in the back box and not a separate earth wire back to the CU and so obviously uses the metal conduit to earth back to the CU so how would i do a continuity test / installation test back at the board for this, i have read testing books and i cant find what to do?

 

[plugwash]

you can't really do a round the ring continuity test when the conduit is used as earth.

you can however use a lead to test that the earth of each socket is somehow connected back to the CU earth.

 

[markisgood]

so how would i enterthis on the test sheet? limatation?