2330 LEVEL 2 - Practical Help

[Jurd]

Hi all,

I'm new to the forum, just signed up after reading through. I couldn't find anything really to help me with my problem, but I have an exam tomorrow - It's the 204/3 exam which I need to test a ring circuit and lighting circuit, as well as the SWA Cable.
most of you have probably done this, so if anyone could give me some guidance it would be kindly appriciated.

I need to test the :

Continuity of R1 + R2 (SWA, lighting and ring)
Ring Final Circuit Continuity of R1 + R2 seperatly for Lighting, and 'Ring' for the Ring circuit.
Also, Insulation Resistance for the 3 circuits - Phase > Neutral, Phase > CPC and Neutral > CPC.

I understand how the test works etc, but I'm still abit wiery about how to do the tests and where I need to carry out the test - if this makes sence.

All that I can remmeber is for the R1+R2 for the ring circuit, I need to 'figure of 8' the Phase and CPC in the consumer unit using a connector block, and test at each socket, then record the highest reading...and for the Lighting circuit (radial) I need check at the furthest point being the ceiling rose..... is this correct?

Im struggling to understand how I would test R1 and R2 seperatly on the lighting circuit too.

Would I test the insulation resistance for all circuits at the tails?

I can barely remember most things I was told but would appriciate it alot if someone could explain whether I'm on the right track.


Many thanks to all that can provide help.
Jordan.

 

[Banjo]

Hi all,

I'm new to the forum, just signed up after reading through. I couldn't find anything really to help me with my problem, but I have an exam tomorrow - It's the 204/3 exam which I need to test a ring circuit and lighting circuit, as well as the SWA Cable.
most of you have probably done this, so if anyone could give me some guidance it would be kindly appriciated.

I need to test the :

Continuity of R1 + R2 (SWA, lighting and ring)
Ring Final Circuit Continuity of R1 + R2 seperatly for Lighting, and 'Ring' for the Ring circuit.
Also, Insulation Resistance for the 3 circuits - Phase > Neutral, Phase > CPC and Neutral > CPC.

I understand how the test works etc, but I'm still abit wiery about how to do the tests and where I need to carry out the test - if this makes sence.

All that I can remmeber is for the R1+R2 for the ring circuit, I need to 'figure of 8' the Phase and CPC in the consumer unit using a connector block, and test at each socket, then record the highest reading...and for the Lighting circuit (radial) I need check at the furthest point being the ceiling rose..... is this correct?

Im struggling to understand how I would test R1 and R2 seperatly on the lighting circuit too.

Would I test the insulation resistance for all circuits at the tails?

I can barely remember most things I was told but would appriciate it alot if someone could explain whether I'm on the right track.


Many thanks to all that can provide help.
Jordan.

That is how i would test my R1 + R2 on the ring main and test at each s/o. Each Value should be fairly the same except spur which will be a bit higher.
Also whilst testing the ring main you will have to test for the Total Circuit Resistance connecting the (P1 - N2 P2 - N1 Figure of 8) and test this at each socket outlet. Each value should be fairly the same except for a spur which will be a bit higher.

On the lighting circuit make a link or in a connector block between Line and CPC and test at the furthest point of the lighting ciruit, make sure if 2-way or 2/way intermediate that switches are operated. Test it between S/L and earth.



You would do separate Insulation Resistance test at the meter tails to the other circuits, each circuit will have to have its own Insulation Resistance tests. And remember when doing a insulation resisitance tesr make sure all lamps and sensitive equipment are removed.

Hope this helps

Stu

Hope this Helps

P.S. Good Luck Fella

 

[Jurd]

Cheers Stu, thanks for the quick reply, glad to know I have the R1 + R2 test in memory.

I'm still unsure of the IR test, couldn't I turn on the breaker of the circuit I'm testing and test the tails?

What do you mean by 'S/L' and earth?

For the IR test, the reading I should get would be '>1000' if the cables are connected properly and arn't damaged?

Sorry if I seem kinda dumb, I'm still getting my head around the whole thing.
I'm trying not to worry, but I cannot help but stress.

Thanks again for your help Stu.

Jordan

 

[Banjo]

Cheers Stu, thanks for the quick reply, glad to know I have the R1 + R2 test in memory.

I'm still unsure of the IR test, couldn't I turn on the breaker of the circuit I'm testing and test the tails?

What do you mean by 'S/L' and earth?

For the IR test, the reading I should get would be '>1000' if the cables are connected properly and arn't damaged?

Sorry if I seem kinda dumb, I'm still getting my head around the whole thing.
I'm trying not to worry, but I cannot help but stress.

Thanks again for your help Stu.

Jordan

Don't worry about it mate, I done mine in April of this year and got distinction, fairly easy really mate had it all done 2 hours before we were ment to finish.

S/L and earth = Switch Line and earth

and yes you should be getting >1000M ohms

Good Luck

let us know how you get on.

Stu

 

[Jurd]

Thanks alot mate, I'll let you know tomorrow !

Cheers again,

Jordan

another quick question,

How would I test for R1 on it's own, and R2 on it's own for a Lighting Circuit?

Is this Line in the Consumer Unit, and the Line in the Ceiling Rose (furthest point)?

Thanks.