Continuity test of protective conductors

[Richard3009]

Is the correct method for testing the continuity of the main bonding conductors with a long flying lead from the tester to the other end of the cable?

 

[sivoodoo]

Yes, but dont forget to null the long lead on the tester to obtain R2

 

[Richard3009]

whilst on that subject why is the earth given the title R2

 

[scotsparky]

The R1 title was taken i think

 

[ryanryan]

r2 is the earth path, with r1 being the resistance of the phase conductor.
with main bonding only the r2 is present

 

[Mark.W]

r2 is the earth path, with r1 being the resistance of the phase conductor.
with main bonding only the r2 is present

I think he wants to know why earth is called R2? not what is the R2?

The simple answer is because it is. Why is the phase conductor called R1?
I think it's because of the test that gets done ie. R1+ R2 which is your earth fault loop impedence test. If your circuit has a fault then the fault current travels down the cpc, which is what it's designed to do. You're therefore testing the impedance (resistance) of the phase conductor and cpc. hence R1 + R2.

I hope that makes cos it doesn't make sense to me.....

 

[ryanryan]

I think he wants to know why earth is called R2?.

R must stand for resistance........... surely!

 

[Mark.W]

R must stand for resistance........... surely!

Yes it is, but he asked why earth is called R2. The answer you gave was R2 is earth, well he know that!

 

[Richard3009]

R2 Yes it makes sense when used in the earth loop impedance terminology.

But to call it R2 when refering to the individual conductor can confuse.

 

[ICE]

R2's brother is called R2D2

 

[Richard3009]

next you will be telling me CPC3PO is a down to earth robot

Ill get mi coat

 

[pevvers]

next you will be telling me CPC3PO is a down to earth robot

Nice work!!!