IR Test

[imranayaz]

Apologies this question has a scenario which I forgot to include.

The 400/230 V three phase system, fur wire electrical installation within a six year old office building, forming part f TN-C-S system is to inspected an tested during normal working hours. Two Metal clad TP & N Distribution boards, containing type B and C circuit breakers to BS EN 60898, are located at the origin. The wiring system within the building is 70 degree C thermoplastic insulated single-core cables, with copper conductors, enclosed in surface mounted PVC conduit and trunking.

Above is the scenario to the question posted earlier, apologies again for not including this beforehand. would the answers you have given, be the same.

 

[Pete999]

Apologies this question has a scenario which I forgot to include.

The 400/230 V three phase system, fur wire electrical installation within a six year old office building, forming part f TN-C-S system is to inspected an tested during normal working hours. Two Metal clad TP & N Distribution boards, containing type B and C circuit breakers to BS EN 60898, are located at the origin. The wiring system within the building is 70 degree C thermoplastic insulated single-core cables, with copper conductors, enclosed in surface mounted PVC conduit and trunking.

Above is the scenario to the question posted earlier, apologies again for not including this beforehand. would the answers you have given, be the same.

It doesn't matter what type of building you are dealing with. so yes
Imran please join the trainee forum, as I told you before more sympathetic help will be found there.

 

[imranayaz]

This is the trainee isit not?

 

[Pete999]

This is the trainee isit not?

May well be I'll check

 

[Pete999]

May well be I'll check

My mistake mate apologies

 

[imranayaz]

No worries

 

[imranayaz]

The reason why I posted the scenario was simply because some of the answers you have given are in the scenario, so I wasn't sure if they would still qualify. For example what are the supply parameters? In the scenario it says 400/230v three phase four wire.

 

[Pete999]

The reason why I posted the scenario was simply because some of the answers you have given are in the scenario, so I wasn't sure if they would still qualify. For example what are the supply parameters? In the scenario it says 400/230v three phase four wire.

Well if it's a large building then that will be the case, split the load over 3 phases, if it's an office block the I doubt very much if they have any 3 phase equipment, so probably 1 floor per phase over the entire building, not knowing the size of the building we can't be sure.

 

[imranayaz]

When it comes to testing and finding unsatisfactory results in an initial verification isit down to you to find the fault and rectify always the case?

 

[trev]

If you have done the installation work yes.
If you're the company tester man then you bat it back to the installers to do the job properly

 

[imranayaz]

When doing the end to end for a ring final, if the cpc's CSA is smaller than r1 and r2, do you multiply by 1.67?

 

[trev]

To achieve what end result?
By the way, you mention the CPC being smaller csa than R2. You may need to think about that one. I know you mean something different but if you were to make the same mistake in an exam you just lost a mark.

 

[Simonslimline]

When doing the end to end for a ring final, if the cpc's CSA is smaller than r1 and r2, do you multiply by 1.67?

2.5mm2 / 1.5mm2 = 1.666666667

 

[imranayaz]

When conducting the continuity test, do you test at the ceiling rose as well as the switch ?

 

[imranayaz]

Thank you for pointing that out, lesson learnt.