between

  1. P

    120v between cpc and earth bar !

    I was carrying out an r1+r2 today and when disconnecting the cpc out of the earth bar to link worth the line it sparked on removal from the earth bar.... I tested between the cpc and the earth bar and got 120v Tncs earthing arrangement I've carried out insulation resistance test and that was...
  2. B

    new lighting circuit problems

    hi avery1 need your help i done new rewire and theres proplem with lighting circuit,iinsulation resistance between LN-earth IS 120 useing megger mft1533,and same problem with same circuit getting 48volts between switch wire and earth with switches off...please p;ease help me :crazy:
  3. bigspark17

    new db no eicr

    Went to a job yesterday where a previous spark had upraded db to dual rcd fair enough job look to standards but customer told me spark had done no eicr? Is this acceptable? Is there a loophole in system?
  4. L

    2 metre unsupported T&E between House & Garage

    Hi All, a customer asked me to look at his supply to the garage which had been installed by previous owners. The garage is approximately 2 maybe 3 metres from the house and as far as I can tell is fed from 2.5mm T&E spurred off the ring. The cable exits the house through the wall about 2 .5...
  5. P

    Routing cable between 2 fluorescent fittings

    I want to add a second fluorescent fitting in my garage. The wiring I require is not an issue but the routing between the two fittings is. The reason is that the integral garage has a plastered ceiling as there is a bedroom above. Although the fittings will be only about 1.5m apart, there are...
  6. D

    Automatic switching between incoming AC Mains and DC Solar power

    My solar-inverter has an in-built AC battery charger ( 220V, 50Hz) as well. Specs of Inverter are 2000 Watts, 48vDC. I have installed Panels of 1200Watts @ 48VDC During day-time, some days are such that my power consumption compared to Solar Energy being made is low, and my batteries are...
  7. E

    Signed agreement between electrician and customer

    Evening all, I'm about to start a couple of biggish jobs and need to think about getting customer to sign order for works agreement. How should it be laid out? Does anyone have a template they use that I could have? Thanks
  8. K

    Relationship between Cut-Out Fuse & MCB PSCC

    Good morning all, Apologies if you have gone over this a number of times before (I have tried searching for a thread, and have found some that have touched on what I'm after but not quite explicitly enough). If the measured PFC is greater than 6ka (for example) with circuit-breakers' breaking...
  9. C

    Potential difference between supplier's earth and water/gas earth...

    Anyone ever noticed a difference between these? Just curious.........
  10. delano

    What are the differences between Italy and the UK regarding electrical wiring?

    What are the differences between Italy and the UK regarding electrical wiring, etc?
  11. L

    Voltage between Cpc and neutral

    Hi If anyone can help,I am carrying out an EICR on part of large hospital and have found voltage that varies between 100 and 200v between live and neutral on one single phase submain cu. It is present when main switch is off so is on load side. Apparently they get voltage around 0v to 60v...
  12. P

    0.5A difference between 2 identical inputs. Solarriver 4000TL-D

    I just had a 4kW system installed. It uses the Samil Solarriver 4000TL-D inverter which has 2 DC inputs. There are 2 strings of 8 panels, each going to one input of the inverter. All the panels have the same aspect and zero shading in the afternoon so I'd expect them to supply the same power at...
  13. P

    Filling in test resullts for 3 Phase/which Zs?

    Hi Guys I've just completed my first 3 phase installation. A 3 phase CU (Proteus) in a church extension. There are 12 x 230V circuits feeding sockets , lights, heaters, etc. 1. Do you record all circuit test results on the same page or use one page for each phase? 2. Do you record Zs at DB...
  14. M

    rcbo tripping before ramp test is complete

    hey all i was wondering what reason would be behind an RCBO tripping out before the ramp test has finished and comping up with trp? thanks
  15. HappyHippyDad

    Low IR readings on lighting circuit - 0.654 Mohms

    I have spent quite a bit of time today trying to understand why I am only getting 0.654Mohms on the upstairs lighting between Live and neutral (at 250V)!!! L-N 0.654 Mohms N-E 25.11 Mohms L-E 24.7 Mohms I get almost the same when measured at 500V (cant remember exactly but about 0.6Mohms) I...
  16. F

    Dual RCD problem (interconnection between lighting circuits?)

    Hi guys, looking for abit of help. Carried out a consumer unit change today, carried out all dead testing etc, all came back ok. New board is a twin 63a RCD. With the following configuration both RCDS tripped straight back out. RCD 1 *upstairs lights *Downstairs sockets...
  17. J

    Ir test on bs 3036 wylex board

    Hi all, l recently did a eicr on a fish and chip shop. 3 phases (only one phase in use by chip shop). Earth conductor is welded together to each phase by TN-S earthing system means. When it came to the IR test, l tested the norm tests, L-E, L-N & N-E. Bearing in mind that we are now supposed...
  18. J

    voltage query

    Hi, iv changed an outside light for a customer and completed all the necessary tests. After powering up I got 230v between L and N but strangely 120v between L and E. The tests were done at the jb prior to the light fitting. Any ideas what could be causing this? Thanks in advance!
  19. S

    New Zealand tamper fault on Optima Compact

    Hi. I've tried to fit an Optima Compact alarm panel with built in key pad. Upon energising there is a tamper fault. I've removed all zones & linked them out but still no joy. This is the reason I hate doing alarms & will avoid in the future! Any ideas please??:devil:
  20. F

    Hyundai Panel expansion gap?

    I have not yet discovered in any of the manufacturers data a specific expansion gap between panels. Any input on this to give a newbie a break Please.

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