r1 plus r2 & R1 plus R2

[m4tty]

Hi,

Can someone tell me what the difference is between the above two

Thanks

 

[ian932]

Hi,Can someone tell me what the difference is between the above two

Thanks

Caps and lower case, do I get a prize do I do I ROTFWL

Sorry could not resist :coat

 

[Bez]

Ahhhhhh, just beat me to it

 

[ian932]

r1 is end to end continuity on the line conductor

r2 is end to end continuity on the CPC.

R1+R2 is testing both together

 

[SPECIAL LOCATION]

Just to elaborate a bit more on what the other guys have said..

and reference some page numbers and a bit of reading...

To the strict definitions of Part2 BS7671 and symbols used:-

'R1' is resistance of line conductor of a distribution or final circuit.

'R2' is resistance of circuit protective conductor (CPC) of a distribution or final circuit.

BUT it is worth noting that lower case 'r1' or 'r2' do not appear in this list.

(whereas for example 'C' and 'c' both do!)

But 'r1' and 'r2' do make an appearance in the ring continuity testing guidance on pages 36 & 37 of guidance note 3

and pages 81 & 82 of on-site-guide.

where r1 and r2 refer to the loop continuity readings of the ring.

It basically refers to an interim calculation/reading on the way to obtaining your R1+R2.

 

[ian932]

Just to elaborate a bit more on what the other guys have said..and reference some page numbers and a bit of reading...

To the strict definitions of Part2 BS7671 and symbols used:-

'R1' is resistance of line conductor of a distribution or final circuit.

'R2' is resistance of circuit protective conductor (CPC) of a distribution or final circuit.

BUT it is worth noting that lower case 'r1' or 'r2' do not appear in this list.

(whereas for example 'C' and 'c' both do!)

But 'r1' and 'r2' do make an appearance in the ring continuity testing guidance on pages 36 & 37 of guidance note 3

and pages 81 & 82 of on-site-guide.

where r1 and r2 refer to the loop continuity readings of the ring.

It basically refers to an interim calculation/reading on the way to obtaining your R1+R2.

He can have the prize Applaud SmileyApplaud SmileyApplaud SmileyApplaud Smiley

 

[SPECIAL LOCATION]

He can have the prize Applaud SmileyApplaud SmileyApplaud SmileyApplaud Smiley

But Deke told me you already ate the prize when you said Caps/Lower case! :_| :_| :_|

 

[a1]

But Deke told me you already ate the prize when you said Caps/Lower case! :_| :_| :_|

No Specs, He say that He Ate all the PIES.