2391 Question

[Banjo]

State for each of the following the most suitable method to be used to verify the continuity of the protective conductor connected between the -

a) MET and an oil line installed less than 1m away. Wander Lead

b) MET and a shave light in a bathroom 24m away. Wander Lead

c) Radiator and a metal victorian bath 2m away. Wander Lead

I'm a little unsure of this question, I would personally use the answers i gave above....or am i just looking to far in to this question?

Cheers Banjo

 

[brucelee]

Hi mate

a) Method 2 R2 wander lead
but 1 metre away you could just use the line lead and neutral lead as they would reach
b) Method 1 R1 + R2 or you could use method 2 R2 using wander lead
c) same

the question is worded badly if thats how its been wrote
normally they would ask what is best method for
continutiy of lighting circuit answer Method 1 R1 +R2
continuity of main protective bonding to water 24 mtrs in length Method 2 R2 using wander lead
continuity of radial skt circuit Method 1 R1 +R2

Is this a real question of a sample paper

 

[Banjo]

Hi mate

Thanks for the reply, yes this is a real question, I thought I may be looking into the question to much but I do think the question is just poorly worded. But hey thats city and guilds.

 

[brucelee]

yep very poor wording things

make sure you say method 1 R1 +R2
or Method 2 R2 usin wander lead

 

[Banjo]

Yep, I know terminology is key in this exam especially reading through a lot of the examiners reports, probelm is college teacher is still using the word "phase" and other old terminology which is bit annoying when you have paid a lot of money for the course. But reading through old threads from you guys have really helped top bunch of lads on here!!

 

[brucelee]

look in the general section there is a post by amberleaf its a sticky at the top called section 301 it has loads of info for 2391

yes he shouldnt be using phase for line as long as you know its a line conductor not a phase conductor

yes this forum is great for help and advice as i found out since joining and getting info on 2391 as well as every other question i could think of just keep posting anything your unsure of and someone will answer mate

good luck

 

[Guest123]

IMO, you would not recieve any marks for your answer there, as you haven't once mentioned the type of instrument you would use in conjunction with the wander lead etc, to carry out the test.

 

[onfire25]

IMO, you would not recieve any marks for your answer there, as you haven't once mentioned the type of instrument you would use in conjunction with the wander lead etc, to carry out the test.

True.......i am re-sitting my theory part tomorrow evening and going back through my notes they like you saying "Low resistance Ohm meter" for testing continuity and for Insulation Resistance "High resistance Ohm meter capable of testing at 250, 500 & 1000V d.c".

 

[Deleted member 26818]

True.......i am re-sitting my theory part tomorrow evening and going back through my notes they like you saying "Low resistance Ohm meter" for testing continuity and for Insulation Resistance "High resistance Ohm meter capable of testing at 250, 500 & 1000V d.c".

I believe the correct term is 'Insulation resistance', not 'High resistance'.

 

[onfire25]

I believe the correct term is 'Insulation resistance', not 'High resistance'.

Not going to disagree with the 'Insulation Resistance' but my previous comment was drummed into my when doing the 2391 course back in May/June. 'High resistance' is not incorrect as such i would say as you are testing for a 'high resistance'.......the wording just 'fluffs' up the answer to what an examiner may like.....you know how anel they are!

 

[ian.settle1]

True.......i am re-sitting my theory part tomorrow evening and going back through my notes they like you saying "Low resistance Ohm meter" for testing continuity and for Insulation Resistance "High resistance Ohm meter capable of testing at 250, 500 & 1000V d.c".

Have to agree with spin if you put that answer you will loose a mark at least.

If you do not use the correct terminology you loose marks read the report from the Chief Examiner from the last exam where he mentioned about incorrect terminology being used.

 

[onfire25]

Thanks for the comment.....frustrating though as i have always written insulation resistance tester for an answer till i went onto that course then the tutor was adiment it should be written as i had mentioned above! Never mind.......will write the proper way tomorrow!

 

[Deleted member 26818]

That's just one of the problems when your tutor is an ex pop star.
I bet he went around humming the tune to prince charming all the time as well.

 

[tony mc]

If in doubt refer to GN3 for the correct terminology.

Agree with the other post re losing unnecessary marks its a easy mistake to make.

Good luck !

 

[onfire25]

Thanks.......i questioned him as i know it refers to it as an 'Insulation Resistance Tester' (pg38GN3) but he stressed it was to be written the other way.....and being the 'student' i followed advice. Never mind.......will write as i should of done the 1st time round.