r1 + r2 testing

[bonio78]

hi, can any one help me to understand how the r1 r2 testing works please

 

[Guest123]

Hi.

Do you mean R1+R2 test or, the r1 and r2 tests??

 

[bonio78]

R1+R2 testing please

 

[tizbad]

[ame=http://www.amazon.co.uk/gp/offer-listing/185617607X/ref=sr_1_olp_1?ie=UTF8&s=gateway&qid=1246287242&sr=8-1]Amazon.co.uk: Used and New: Practical Guide to Inspection, Testing and Certification of Electrical Installations: Conforms to 17th Edition IEE Wiring Regulations (BS 7671:2008) and Part P of Building Regulations[/ame]

hi, this link should take you to christopher Kitcher, practical guide to inspection, testing and cert. of elec. instal. its to the 16th but i found it helpful when learning how to test.

sorry link doesn't work for some reason, just search for kitcher on ebay or amazon, worth the £ imo

 

[Guest123]

Hi.

If you are R1+R2 testing on a radial circuit then you simply isolate all power at the DB i.e main switch off, place a link between Line and Earth of the circuit you want to test, then go to the end of that circuit and measure the continuity between Line and Earth.

For a ring main again isolate, joint Line 1 to Earth 2, Line 2 to Earth one and measure at each socket on that ring circuit, the highest reading you get being recorded as the R1+R2 for that ring circuit.

Hope this helps.

 

[bonio78]

ok cheers, bare with me with this, on a radial circuit in a house, how would you know which is the last socket?
thanks for your help

 

[Guest123]

Hi.

Well I would switch all other circuits off apart from the one you want to test, then go round each socket with a martindale tester to see which ones were still live, i.e on that circuit. Chances are the furthest one away from the DB will be the last. It will also have just one T+E in it.

 

[tizbad]

the last socket will have one cable feeding it

 

[Mac]

Hi Lenny,what's the difference between R1+R2 and r1+r2 tests

 

[Guest123]

Hey bud.

People just get confused at times with the letters and symbols for things (or cant be bothered to use caps lock).

Little r1 is end to end continuity on the line conductor

Little r2 is end to end continuity on the CPC.

No such thing as r1+r2

It's R1+R2.

 

[scotsparky]

the caps lock button on the computer

testing R1 then R2 is testing continuity of each conductorseperatly
R1+R2 is testing both at same time.

hehe got there before me Lenny

 

[Guest123]

Always finish first....story of my life.

 

[Mac]

the caps lock button on the computer

testing R1 then R2 is testing continuity of each conductorseperatly
R1+R2 is testing both at same time.

hehe got there before me Lenny

Cheers mate

 

[scotsparky]

Lenny your misses tell you that mate????

 

[Guest123]

Used to, now we dont even bother.