a couple of questions

[luke12]

hi there ive got my 2391 theory next Thursday and i would just like to clear up a few things if any one could help.

firstly, when a question asks for the first 5 tests for a lighting circuit, for example, would i put

1. Continuity of cpc

2 Insulation Resistance

3. polarity (dead)

4. polarity (live)

5. earth fault loop impedance

or would i put

1. Continuity of cpc

2 Insulation Resistance

3. polarity

4 earth fault loop impedance

5. prospective fault current

im being told two different thing, would just like to know what you would put.

Also can any one clear up which RCD goes where, im getting a little confused with the correct sizes for special locations

100mA

300mA

500mA

cheers.

 

[Andy™]

testing order - clicky

100ma+ are mostly used for protection against fire

 

[luke12]

so for the rcds in a agricultural premises would it be:

30 mA for sockets below 32A

100mA for sockets above 32A

300mA for any other circuit

would that be correct?