r1+r2 | Page 3

r1+r2

Recent contents View information Top users
  1. R

    Unusually low R1+R2 readings

    Hi All So I've just extended two circuits and I've got home to type my results up for the certificate and I'm doubting my results, For the R1+R2 for the cooker circuit I got 0.02 ohms and for the ring I got 0.25 ohms, something seems a little off here. Now by my calculations a 6mm cable should...
  2. D

    Ring Main R1+R2

    Hi, Just a quick question, Ring Main, ive done end to end on the neutral and line conductor, cant do end to end of the CPC due to the Steel Conduit being used as the CPC, does this mean that i cant do a R1+R2 test due to being unable to do the figure 8? Thanks
  3. S

    R1+R2 - two way lighting - 2.7 ohms, can i get your opinions please?

    Hi All, In preparation for a pending assessment, I have installed a new 2 way CU in my garage with all new wiring (my own property), and TT the earth. (House supply is TNC-S, PME). I am testing the lighting circuit. (6a mcb / 2 switches / 2 way/ 1.5/1.0 cable . Have tested in all switch...
  4. N

    0.00 ohms r1+r2 on radial circuit?

    Hi all, I've tested several radial circuits and only getting 0.00 ohms on the r+r2 test (zero'd leads) 2 of the radials only supplies one socket each and are approx. 3 metres in total length. (zs 0.25 and 0.21) Another radial only supplies one socket and is appox. 5m in length. (zs 0.35) The...
  5. B

    Low R1+R2

    I am currently testing a ring circuit with an r1 of 1.12 an rn of 1.12 and an r2 of 1.80 I have carried out my figure 8 test only to find that i have varying readings at the sockets between 0.40 and 0.80. How is it that I could be getting a low reading such as 0.40 with no parallel paths. I...
  6. S

    R1+R2 of a ring circuit

    I know you take the highest reading, though not sure if you take the highest reading on the ring circuit or a spur off the ring circuit? cheers
  7. D

    r1+r2 test on 2 way lighting

    Evening gents bit of advice, testing the above and when switches are on a reading of 3.13 ohms is apparent. Now when a switch is turned off I would expect a dead circuit I.e infinite >2000 but no a reading of 60.4 ohms is shown any thoughts on what this could be ?? Cheers
  8. G

    R1+R2 on 100mtrs 2.5

    HI all, can someone tell me what the R1&R2 reading on 100mtrs of 2.5mm would be and has anyone got a table for working it out, been years since doing it but why do i remember 0.07 in my head, remember someone telliing me to think of james bond but cant seem to think why. i assume there is a...
  9. Simonslimline

    R1+R2 with dimmers in circuit.

    What is the reason that a dimmer makes R1+R2 readings so high when still connected in lighting circuits? I may be missing the obvious but is it anything to do with Back EMF?
  10. S

    Socket ring readings. R1+R2 approx half r1, r2

    I havent come across this before, wondered if its common and what it signifies in the ring. Remeasured 3 times and got within 20mohms or so each time so pretty sure its not a zeroing the meter thing. 2.5:1.5 TW/E ring. I went around all of downstairs rooms, did min of few sockets in each room...
  11. R

    R1+r2

    If i you can't isolate the supply to obtain an R1+R2 would it then be acceptable to calculate it? Also then as an alternate means how would you prove polarity?
  12. R

    R2 option over R1+R2

    Testing. I know you can do an R2 as oppose to R1+R2. So, if I decided to take this route how could you check compliance, cheers.
  13. D

    R1+R2 mixed installation

    Carrying out a few consumer unit replacements at a hotel, installation to the room is via trunking conduit with no cpc however at the rooms previous refurbishments have been carried out these being wired in Twin and earth with the cpc being connected to the existing system. Now I am not sure...
  14. B

    Zs before R1+R2

    Evening electricians. This has probably already been covered but am gonna go for it anyway. Is it possible to get a Zs reading without cpc. The reason I ask, is today is undertook an R1+R2 test which had a visible cpc but open circuit . i undertook a Zs test, and got a reading. I understand...
  15. B

    r1+r2 readings

    Im sure this has been covered before, but Im after peoples views, I am 100 percent confused by the reg that states zs may be calculated using ze plus r1 r2, but r1 r2 cannot be calculated using zs minus ze, naturally I test my r1 r2 and zs. But once I've tested my zs on a periodic for example I...
  16. HappyHippyDad

    R1 + R2 does not equal (R1+R2) in example in On Site Guide.

    I have always been a bit confused about boxes 10,12 and 13 in the example of a completed 'Form 4 - schedule of test results'. I understand why the value we get for R1+R2 (when measured at a socket) is a quarter of the end to end resistances, but why on the form is this not more clear? Box 10...
  17. E

    How do you test r1+r2? Any tips on doing it faster

    Evening all, When testing r1 + r2 do you connect live to earth bar, link it at the end of the circuit or do you have someone at the end helping you? whilst testing Today I was wondering is there a quicker way to do it apart from the long lead method as I prefer r1+r2
  18. T

    r1+r2 resistance/metre

    Hi Can someone provide me the equation for resistance/metre for r1+r2
  19. M

    R1+R2 Readings - Advice

    Hi, Hoping someone can help. I went to a job today where the householder had sixteen downlights installed less than twelve months ago, (no test sheet or certificate for the install), the complaint being that bulbs (240V GU10) are always blowing. I pulled the downlights and checked connections...
  20. A

    R1+R2 two way intermediate switch Am2 HELP!!!!

    hi, how do i test for continity at light? which switch position do i need to get a reading? Thanks

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top