HELP please, - testing for 204 exam

[SPARK2B]

[FONT=&amp]Hi all, could anyone put some info my way, i was trying to jot all this down in note form whilst doing other things at college, this is the testing for the 204 exam i ahve to do nex week, can you guys go through and suggest any adjustments / errors i have made, i have left one of my notes from last night at college and cannot get it until tuesday, it concerned checking polarity "at this stage" and was in with the continuity of cpc part of the tests, beeen awake for 30 hours now and am really letting this testing get to me as we have done next to none at college, and now i have yo do it next week to pass the exam, and i want to just blitz it and get it done, hence the studying...as always any and all help, much appreciated!!!

it wouldant be a problem but im alone in it, as the rest of thee class (bar one other guy) are not going to be doing it for 5 weeks, after half term, purely because mine and my mates scheduals allow us to go in to college in the daytime, and not just eves,....thrown in at deep end....so we want to blitz it!
[/FONT][FONT=&amp]


Continuity of Cpc and bonding conductors[/FONT]

[FONT=&amp]1. [/FONT][FONT=&amp]The line conductor is connected to the Cpc of the same circuit at the consumer unit [/FONT]
[FONT=&amp]2. [/FONT][FONT=&amp]measurement taken at ALL accessories on that circuit between line and Cpc[/FONT]
[FONT=&amp]3. [/FONT][FONT=&amp] The highest measurement obtained is recorded on the test report. Test result is[/FONT]
[FONT=&amp] R1 + R2. [/FONT]
[FONT=&amp]4. [/FONT][FONT=&amp]The line conductor and neutral conductor are then connected and the above repeated to obtain R1 + Rn[/FONT]

[FONT=&amp]Continuity of ring circuit[/FONT]
[FONT=&amp]1. [/FONT][FONT=&amp]End to end tests for Line (r1) Neutral ([/FONT][FONT=&amp]r[/FONT][FONT=&amp]n) Cpc (r2) [/FONT]
[FONT=&amp]2. [/FONT][FONT=&amp]Calculate predicted R1+R2 by r1+r2/4, record predicted R1+R2 in notes[/FONT]
[FONT=&amp]3. [/FONT][FONT=&amp]Create a temporary link in CU between Cpc +Line [/FONT]
[FONT=&amp]4. [/FONT][FONT=&amp]@ each socket on the ring, either with plug adaptor or direct connection @ terminals measure Ω between line and Cpc , this is the R1+R2 , make a note of each value in notes[/FONT]
[FONT=&amp]5. [/FONT][FONT=&amp]In column R1+R2 record the highest value[/FONT]
[FONT=&amp]6. [/FONT][FONT=&amp]Disconnect temporary link[/FONT]

[FONT=&amp]Insulation resistance [/FONT]
[FONT=&amp]1. [/FONT][FONT=&amp]Remove all lamps and sensitive equipment from the circuit to be testes[/FONT]
[FONT=&amp]2. [/FONT][FONT=&amp]Move all breakers to the ON position[/FONT]
[FONT=&amp]3. [/FONT][FONT=&amp]Place a temporary link between bus bar and neutral terminal[/FONT]
[FONT=&amp]4. [/FONT][FONT=&amp]Test @ 500V between Earth terminal and Neutral (this test L+N down to earth)[/FONT]
[FONT=&amp]5. [/FONT][FONT=&amp]Remove link[/FONT]
[FONT=&amp]6. [/FONT][FONT=&amp]Test between L+N @500V[/FONT]
[FONT=&amp]7. [/FONT][FONT=&amp]2 way switches must be operated at each stage (test, operate switch, test)[/FONT]

[FONT=&amp]Bonding continuity[/FONT]
[FONT=&amp]Disconnect bonding from MET, and on Ω setting take measurements between both ends, record results in notes.[/FONT]



THANKYOUUUUUU!!!

SPARK2B

 

[Pete999]

[FONT=&amp]Hi all, could anyone put some info my way, i was trying to jot all this down in note form whilst doing other things at college, this is the testing for the 204 exam i ahve to do nex week, can you guys go through and suggest any adjustments / errors i have made, i have left one of my notes from last night at college and cannot get it until tuesday, it concerned checking polarity "at this stage" and was in with the continuity of cpc part of the tests, beeen awake for 30 hours now and am really letting this testing get to me as we have done next to none at college, and now i have yo do it next week to pass the exam, and i want to just blitz it and get it done, hence the studying...as always any and all help, much appreciated!!!

it wouldant be a problem but im alone in it, as the rest of thee class (bar one other guy) are not going to be doing it for 5 weeks, after half term, purely because mine and my mates scheduals allow us to go in to college in the daytime, and not just eves,....thrown in at deep end....so we want to blitz it!
[/FONT][FONT=&amp]


Continuity of Cpc and bonding conductors[/FONT]

[FONT=&amp]1. [/FONT][FONT=&amp]The line conductor is connected to the Cpc of the same circuit at the consumer unit [/FONT]
[FONT=&amp]2. [/FONT][FONT=&amp]measurement taken at ALL accessories on that circuit between line and Cpc[/FONT]
[FONT=&amp]3. [/FONT][FONT=&amp] The highest measurement obtained is recorded on the test report. Test result is[/FONT]
[FONT=&amp] R1 + R2. [/FONT]
[FONT=&amp]4. [/FONT][FONT=&amp]The line conductor and neutral conductor are then connected and the above repeated to obtain R1 + Rn[/FONT]

[FONT=&amp]Continuity of ring circuit[/FONT]
[FONT=&amp]1. [/FONT][FONT=&amp]End to end tests for Line (r1) Neutral ([/FONT][FONT=&amp]r[/FONT][FONT=&amp]n) Cpc (r2) [/FONT]
[FONT=&amp]2. [/FONT][FONT=&amp]Calculate predicted R1+R2 by r1+r2/4, record predicted R1+R2 in notes[/FONT]
[FONT=&amp]3. [/FONT][FONT=&amp]Create a temporary link in CU between Cpc +Line [/FONT]
[FONT=&amp]4. [/FONT][FONT=&amp]@ each socket on the ring, either with plug adaptor or direct connection @ terminals measure Ω between line and Cpc , this is the R1+R2 , make a note of each value in notes[/FONT]
[FONT=&amp]5. [/FONT][FONT=&amp]In column R1+R2 record the highest value[/FONT]
[FONT=&amp]6. [/FONT][FONT=&amp]Disconnect temporary link[/FONT]

[FONT=&amp]Insulation resistance [/FONT]
[FONT=&amp]1. [/FONT][FONT=&amp]Remove all lamps and sensitive equipment from the circuit to be testes[/FONT]
[FONT=&amp]2. [/FONT][FONT=&amp]Move all breakers to the ON position[/FONT]
[FONT=&amp]3. [/FONT][FONT=&amp]Place a temporary link between bus bar and neutral terminal[/FONT]
[FONT=&amp]4. [/FONT][FONT=&amp]Test @ 500V between Earth terminal and Neutral (this test L+N down to earth)[/FONT]
[FONT=&amp]5. [/FONT][FONT=&amp]Remove link[/FONT]
[FONT=&amp]6. [/FONT][FONT=&amp]Test between L+N @500V[/FONT]
[FONT=&amp]7. [/FONT][FONT=&amp]2 way switches must be operated at each stage (test, operate switch, test)[/FONT]

[FONT=&amp]Bonding continuity[/FONT]
[FONT=&amp]Disconnect bonding from MET, and on Ω setting take measurements between both ends, record results in notes.[/FONT]



THANKYOUUUUUU!!!

SPARK2B

https://www.youtube.com/watch?v=yY8nsGn2xBohttps: //www.youtube.com/watch?v=zSATFrqlSpghttps: //www.youtube.com/watch?v=p6j4JeRU3Z0 sorry if the three vids didn't come out but if not go to you tube, there are a great selection of testing vids

 

[Richard Burns]

Calm, calm, calm, take it easy, it is not the end of the world.
Deep breaths in and out.
Chill.
Right now we can proceed!
Being awake for 30 hours will not help, you need to be able to concentrate and be refreshed.
Continuity of Cpc and bonding conductors

1. The line conductor is connected to the Cpc of the same circuit at the consumer unit
2. measurement taken at ALL accessories on that circuit between line and Cpc
3. The highest measurement obtained is recorded on the test report. Test result is
R1 + R2.
4. The line conductor and neutral conductor are then connected and the above repeated to obtain R1 + Rn
This is not part of the testing

Bonding continuity comes with the above
Isolate the supply
Disconnect bonding conductor from MET, and on low Ω setting measure the resistance from the disconnected end to the extraneous metalwork(this tests the bonding clamp connection), record results in notes.

Continuity of ring circuit
1. End to end tests for Line (r1) Neutral (rn) Cpc (r2)
2. Calculate predicted R1+R2 by (r1+r2)/4, record predicted R1+R2 in notes
3. calculate predicted R1+Rn by (r1+rn)/4, record in notes
4. Create a temporary link in CU between the opposing Cpc +Line forboth legs of the ring (crossover, figure 8)
5. @ each socket on the ring, either with plug adaptor or direct connection @ terminals measure Ω between line and Cpc , this is the R1+R2 , make a note of each value in notes. Values at each point should equal predicted value (within 0.05Ω)
6. In column R1+R2 record the highest value
7. Disconnect temporary link

8. Create a temporary link in CU between the opposing Neutral +Line for both legs of the ring (crossover, figure 8)
9. @ each socket on the ring, either with plug adaptor or direct connection @ terminals measure Ω between line and Neutral, this is the R1+Rn , make a note of each value in notes. Values at each point should equal predicted value (within 0.05Ω)
10. Disconnect temporary link

Insulation resistance
1. Remove all lamps and sensitive equipment from the circuit to be tested (linking the incoming and outgoing cables to bypass items such as dimmer switches)

The following is one type of acceptable test: L+N to E
2. Move all breakers to the ON position, main switch OFF
3. Place a temporary link between bus bar and neutral terminal
4. Test @ 500V between Earth terminal and Neutral (this test L+N down to earth)
5. Record the value
6. Remove link

The following is the other type of acceptable test: test from each conductor to every other conductor of a disconnected circuit
1. Test between L+N @500V (operate two way switches) Record the value in live-live
2. Test between L+E @500V (operate two way switches) Record the highest of this and the next value in Live-earth
3. Test between E+N @500V Record the highest of this and the previous value in Live-earth

You can do either test (or both if you wish) but do not get them mixed together.


Polarity is confirmed by performing the R1+R2 testing as described above
Functionality is confirmed on dead testing by physical movement of switches/ circuit breakers and continuity testing across the switch.
If the circuit is live then functionality is tested by switching on each control and confirming expected operation.

 

[SPARK2B]

https://www.youtube.com/watch?v=yY8nsGn2xBohttps: //www.youtube.com/watch?v=zSATFrqlSpghttps: //www.youtube.com/watch?v=p6j4JeRU3Z0 sorry if the three vids didn't come out but if not go to you tube, there are a great selection of testing vids

.....im on it!!!

cheers!!

SPARK2B

 

[SPARK2B]

Calm, calm, calm, take it easy, it is not the end of the world.
Deep breaths in and out.
Chill.
Right now we can proceed!
Being awake for 30 hours will not help, you need to be able to concentrate and be refreshed.
Continuity of Cpc and bonding conductors

1. The line conductor is connected to the Cpc of the same circuit at the consumer unit
2. measurement taken at ALL accessories on that circuit between line and Cpc
3. The highest measurement obtained is recorded on the test report. Test result is
R1 + R2.
4. The line conductor and neutral conductor are then connected and the above repeated to obtain R1 + Rn
This is not part of the testing

Bonding continuity comes with the above
Isolate the supply
Disconnect bonding conductor from MET, and on low Ω setting measure the resistance from the disconnected end to the extraneous metalwork(this tests the bonding clamp connection), record results in notes.

Continuity of ring circuit
1. End to end tests for Line (r1) Neutral (rn) Cpc (r2)
2. Calculate predicted R1+R2 by (r1+r2)/4, record predicted R1+R2 in notes
3. calculate predicted R1+Rn by (r1+rn)/4, record in notes
4. Create a temporary link in CU between the opposing Cpc +Line forboth legs of the ring (crossover, figure 8)
5. @ each socket on the ring, either with plug adaptor or direct connection @ terminals measure Ω between line and Cpc , this is the R1+R2 , make a note of each value in notes. Values at each point should equal predicted value (within 0.05Ω)
6. In column R1+R2 record the highest value
7. Disconnect temporary link

8. Create a temporary link in CU between the opposing Neutral +Line for both legs of the ring (crossover, figure 8)
9. @ each socket on the ring, either with plug adaptor or direct connection @ terminals measure Ω between line and Neutral, this is the R1+Rn , make a note of each value in notes. Values at each point should equal predicted value (within 0.05Ω)
10. Disconnect temporary link

Insulation resistance
1. Remove all lamps and sensitive equipment from the circuit to be tested (linking the incoming and outgoing cables to bypass items such as dimmer switches)

The following is one type of acceptable test: L+N to E
2. Move all breakers to the ON position, main switch OFF
3. Place a temporary link between bus bar and neutral terminal
4. Test @ 500V between Earth terminal and Neutral (this test L+N down to earth)
5. Record the value
6. Remove link

The following is the other type of acceptable test: test from each conductor to every other conductor of a disconnected circuit
1. Test between L+N @500V (operate two way switches) Record the value in live-live
2. Test between L+E @500V (operate two way switches) Record the highest of this and the next value in Live-earth
3. Test between E+N @500V Record the highest of this and the previous value in Live-earth

You can do either test (or both if you wish) but do not get them mixed together.


Polarity is confirmed by performing the R1+R2 testing as described above
Functionality is confirmed on dead testing by physical movement of switches/ circuit breakers and continuity testing across the switch.
If the circuit is live then functionality is tested by switching on each control and confirming expected operation.

MAAANNNNNNN!!!.....I WAS WAY OFF!!

many thanks for this imput mate!!

time to digest!!....iv slept now,....things make a little more sense!!

THANKOOOOOOOO


SPARK2B

 

[SPARK2B]

Calm, calm, calm, take it easy, it is not the end of the world.
Deep breaths in and out.
Chill.
Right now we can proceed!
Being awake for 30 hours will not help, you need to be able to concentrate and be refreshed.
Continuity of Cpc and bonding conductors

1. The line conductor is connected to the Cpc of the same circuit at the consumer unit
2. measurement taken at ALL accessories on that circuit between line and Cpc
3. The highest measurement obtained is recorded on the test report. Test result is
R1 + R2.
4. The line conductor and neutral conductor are then connected and the above repeated to obtain R1 + Rn
This is not part of the testing

Bonding continuity comes with the above
Isolate the supply
Disconnect bonding conductor from MET, and on low Ω setting measure the resistance from the disconnected end to the extraneous metalwork(this tests the bonding clamp connection), record results in notes.

Continuity of ring circuit
1. End to end tests for Line (r1) Neutral (rn) Cpc (r2)
2. Calculate predicted R1+R2 by (r1+r2)/4, record predicted R1+R2 in notes
3. calculate predicted R1+Rn by (r1+rn)/4, record in notes
4. Create a temporary link in CU between the opposing Cpc +Line forboth legs of the ring (crossover, figure 8)
5. @ each socket on the ring, either with plug adaptor or direct connection @ terminals measure Ω between line and Cpc , this is the R1+R2 , make a note of each value in notes. Values at each point should equal predicted value (within 0.05Ω)
6. In column R1+R2 record the highest value
7. Disconnect temporary link

8. Create a temporary link in CU between the opposing Neutral +Line for both legs of the ring (crossover, figure 8)
9. @ each socket on the ring, either with plug adaptor or direct connection @ terminals measure Ω between line and Neutral, this is the R1+Rn , make a note of each value in notes. Values at each point should equal predicted value (within 0.05Ω)
10. Disconnect temporary link

Insulation resistance
1. Remove all lamps and sensitive equipment from the circuit to be tested (linking the incoming and outgoing cables to bypass items such as dimmer switches)

The following is one type of acceptable test: L+N to E
2. Move all breakers to the ON position, main switch OFF
3. Place a temporary link between bus bar and neutral terminal
4. Test @ 500V between Earth terminal and Neutral (this test L+N down to earth)
5. Record the value
6. Remove link

The following is the other type of acceptable test: test from each conductor to every other conductor of a disconnected circuit
1. Test between L+N @500V (operate two way switches) Record the value in live-live
2. Test between L+E @500V (operate two way switches) Record the highest of this and the next value in Live-earth
3. Test between E+N @500V Record the highest of this and the previous value in Live-earth

You can do either test (or both if you wish) but do not get them mixed together.


Polarity is confirmed by performing the R1+R2 testing as described above
Functionality is confirmed on dead testing by physical movement of switches/ circuit breakers and continuity testing across the switch.
If the circuit is live then functionality is tested by switching on each control and confirming expected operation.

I have been through and made the changes and i think have them all in place, iv checked and double chekcked, but still may have missed a bit or got it in the wrong place, iv read it over a few times,...but would like anyone qho can help to just check over it for me

really appreciate it guys!!

HERES MY CORRECTIONS....



[FONT=&amp]Continuity of Cpc and bonding conductors[/FONT][FONT=&amp]
1. The line conductor is connected to the Cpc of the same circuit at the consumer unit
2. measurement taken at ALL accessories on that circuit between line and Cpc
3. The highest measurement obtained is recorded on the test report. Test result is
R1 + R2.
4. The line conductor and neutral conductor are then connected and the above repeated to obtain R1 + Rn This is not part of the testing

Bonding continuity comes with the above
Isolate the supply
Disconnect bonding conductor from MET, and on low Ω setting measure the resistance from the disconnected end to the extraneous metalwork (this tests the bonding clamp connection), record results in notes.

Continuity of ring circuit
1. End to end tests for Line (r1) Neutral (rn) Cpc (r2)
2. calculate predicted R1+Rn by (r1+rn)/4, record in notes
3. Create a temporary link in CU between the opposing Neutral +Line for both legs of the ring (crossover, figure 8)[/FONT]
[FONT=&amp]4. @ each socket on the ring, either with plug adaptor or direct connection @ terminals measure Ω between line and Neutral, this is the R1+Rn, make a note of each value in notes. Values at each point should equal predicted value (within 0.05Ω)[/FONT]
[FONT=&amp]5. In column R1+R2 record the highest value
6. Disconnect temporary link[/FONT][FONT=&amp]

Insulation resistance
1. Remove all lamps and sensitive equipment from the circuit to be tested (linking the incoming and outgoing cables to bypass items such as dimmer switches)
2. Move all breakers to the ON position, main switch OFF
3. Place a temporary link between bus bar and neutral terminal
4. Test @ 500V between Earth terminal and Neutral (this test L+N down to earth)
Record the value
5. Remove link
6. 2 way switches must be operated at each stage (test, operate switch, test)


Polarity is confirmed by performing the R1+R2 testing as described above
Functionality is confirmed on dead testing by physical movement of switches/ circuit breakers and continuity testing across the switch.
If the circuit is live then functionality is tested by switching on each control and confirming expected operation.[/FONT]


thanks again

SPARK2B

 

[Richard Burns]

I have combined CPC and bonding conductor continuity sections and put back in to the ring testing the line to cpc crossover testing (you need to do both L/N and L/E)

Continuity of Cpc and bonding conductors
The line conductor is connected to the Cpc of the same circuit at the consumer unit
measurement taken at ALL accessories on that circuit between line and Cpc
The highest measurement obtained is recorded on the test report.
Test result is R1 + R2.

Isolate the supply
Disconnect bonding conductor from MET, and on low Ω setting measure the resistance from the disconnected end to the extraneous metalwork (this tests the bonding clamp connection), record results in notes.

Continuity of ring circuit
End to end tests for Line (r1) Neutral (rn) Cpc (r2)
Calculate predicted R1+R2 by (r1+r2)/4, record predicted R1+R2 in notes
Calculate predicted R1+Rn by (r1+rn)/4, record in notes
Create a temporary link in CU between the opposing cpc +Line for both legs of the ring (crossover, figure 8)
@ each socket on the ring, either with plug adaptor or direct connection @ terminals measure Ω between line and Cpc , this is the R1+R2 , make a note of each value in notes. Values at each point should equal predicted value (within 0.05Ω)
In column R1+R2 record the highest value
Disconnect temporary link


Create a temporary link in CU between the opposing Neutral +Line for both legs of the ring (crossover, figure 8)
@ each socket on the ring, either with plug adaptor or direct connection @ terminals measure Ω between line and Neutral, this is the R1+Rn , make a note of each value in notes. Values at each point should equal predicted value (within 0.05Ω)
Disconnect temporary link


Insulation resistance
Remove all lamps and sensitive equipment from the circuit to be tested (linking the incoming and outgoing cables to bypass items such as dimmer switches)
Move all breakers to the ON position, main switch OFF
Place a temporary link between bus bar and neutral terminal
Test @ 500V between Earth terminal and Neutral (this tests L+N down to earth)
Record the value
Remove link
2 way switches must be operated at each stage (test, operate switch, test)


Polarity is confirmed by performing the R1+R2 testing as described above
Functionality is confirmed on dead testing by physical movement of switches/ circuit breakers and continuity testing across the switch.
If the circuit is live then functionality is tested by switching on each control and confirming expected operation.

 

[Paul.M]

Gents, will it help or hinder the thread if I edited your posts (& reply with quotes) to show the correct number sequence? Plenty of time to reply, I'm off for a shower. Looks like I've been down the pit all day. ps Great posts by everyone

 

[Richard Burns]

Gents, will it help or hinder the thread if I edited your posts (& reply with quotes) to show the correct number sequence? Plenty of time to reply, I'm off for a shower. Looks like I've been down the pit all day. ps Great posts by everyone

It might make my response(s) easier to understand to someone reading it from new, then you could delete the two explanation posts (6&7).

 

[SPARK2B]

did i do summin wrong.....just got a load of messages from dan saying posts deleted etc

fluancy.....number sequences ??...

i dont know?

thanks to all so far for help!!


SPARK2B

 

[Paul.M]

did i do summin wrong.....just got a load of messages from dan saying posts deleted etc

fluancy.....number sequences ??...

i dont know?

thanks to all so far for help!!


SPARK2B

LOL that was me editing the sequence of tests that Richard posted up. One of the sequences was wrong as he posted up (now deleted). Richard Burns wants to keep the testing sequence correct for you and any others that read this post over the years.

You've done nothing wrong mate, just bin the e-mails. Richard and I are cleaning up this thread for everyone to gain from. Good thread by the way, I like it.

 

[SPARK2B]

iv told you guys.....you dont know how much this is helping me....been stressing

you guys rock

SPARK2B

 

[Paul.M]

iv told you guys.....you dont know how much this is helping me....been stressing

you guys rock

SPARK2B

All the Mentors have the same frame of mind. We all help the ones that put effort into themselves. Asking questions and getting help like the above is a great way of doing it.

 

[Paul.M]

@ Richard. Are you happy with the new edited thread and the reply with quotes? Looks good to me.

 

[Richard Burns]

Sorted, thank you for the effort to get things right