Quick couple of coding questions

[La Poste]

If you did a PIR for a 2391 exam and after testing found insulation resistance on a circuit to be 0.4M Ohms between line and earth on an outside light which code would you use?
Would you use code 2, requires improvement or code 3 requires further investigation?
I used code 3 and got the wrong answer according to this mock test I am doing.


Also if you found the breaking capacity of the fuses to be below the PFC would you code 1 or code 2 it?

Thanks alot.

 

[telectrix]

the first part could be a 2 or a 3 IMO. the second part i would code 2. as requires improvement, but no immediate danger.

 

[La Poste]

The other codes were to do with not having RCD protection in the offices, Code 4.
Now I thought offices were full of skilled and instructed persons.
I guess if the question does not mention they are skilled and instructed then you have to assume that they are not.
Also the work shop ring had no RCD protection code 4.
I thought work shops were full of skilled and instructed persons and the only time you would need RCD protection was if you had a socket that could be used for mobile equipment outdoors.
I wonder how flexible City and Guilds are with their answers to coding questions.

 

[malcolmsanford]

That IR question is a little teaser. If you read Reg 612.3.2 it states

" The insulation resistance measured with the test voltages indicated in Table 61 shall be considered Satisfactory if the main switchboard and each distribution circuit tested separately, with all it's final circuits connected but with current-using equipment disconnected, has an insulation resistance not less than the appropriate value given in Table 61"

So as your reading was 0.4 Mohm it can not be seen as satisfactory and yes a code 2.

 

[La Poste]

Could someone give some examples of a code 3?

 

[telectrix]

Zs reading above max. allowed. boxed in BS951 clamp on water or gas so you can't actually see that it's connected. anything that you think requires further investigation to determine if it's satisfactory or not.

 

[La Poste]

I have a fault that has come to the inspectors attention that is outside the extent of the installation to be inspected.

 

[telectrix]

I have a fault that has come to the inspectors attention that is outside the extent of the installation to be inspected.

please elaborate.

 

[La Poste]

Tough one, I read it out the book and am not sure myself.

I guess if he is in the car park testing an outside light and notices the car park lights that are not part of the inspection are falling apart with wires hanging out of them all over the place.

 

[La Poste]

"The person ordering the report should be advised that the inspection has revealed an apparent deficiency which could not, due to the agreed extent or limitations, be fully investigated"