circuit

  1. D

    How to test RCD for lighting circuit

    I live in Australia; you can use a socket tester to test the RCD for the power outlet circuit. Plug device to a 3-pin wall socket, set testing mA to 30 on the device and press test button. What is the best way to test RCD on the lighting circuit – from an existing B22 or E27 lamp holder? (Not...
  2. S

    Light circuit fault. 230v on l and n no light working

    Hi There is a lighting circuit fault in a property with the downstairs lighting circuit. I have tested the voltage and there is 230v on both line and neutral conductors going to the light pendnat although the pendant (any pendant) isnt showing light . no changes have been made to the lighting...
  3. Antares

    Dead test circuit with 2 cpc

    Hello everyone, I saw in the hospital every circuit has 2 separate cpc, same size, sometimes different. I'm wondering. How we can do the dead test in this case? R1+R2 whith 2 cpc combine, but IR test 2 cpc separate? what result will be sign in test sheets?What in case if there are 2 different...
  4. L

    No earth in lighting circuit

    Hi, Just interested in learning what others do when faced with an old lighting installation where there is no earth and you’re installing a metal class 1 light fitting. I would assume you would have to run an earth in? Also, with class 2 fittings, is it the box where the cables are terminated...
  5. A

    Help with Readings on circuit

    Hi Can anyone clear up or explain in a bit more detail what could potentially be causing the results I have. I have just tested a 32a ring main wired in 2.5mm twin on B32 Rcbo. There are 8 sockets on the ring and all are in plastic dado trunking in 2 offices. The readings I have are: L-L= 0.76...
  6. oscarelectrics

    Does a circuit board with an SPD protect against internal surges?

    Hello! I'm struggling to find an answer to this question online. I'm new here btw - I'm a DIYer with a physics degree Currently when my fridge motor turns off, I get a transient voltage spike on other devices plugged into the same circuit (i.e. an internal surge) If I upgraded my circuit...
  7. ionionascu

    UK Is this a new circuit?

    Hi. A few years ago we had a full house rewiring done by an electrician who issued a certificate for the work. He also left in the consumer unit an MCB to be used in the futue for an immersion heater and a cable in the wall, unconnected to the MCB, which should be used by the immersion heater...
  8. D

    NICEIC Certification Scheme New Circuit - NO RCDs

    A client wants an outdoor socket installing on a new circuit. The current installation doesn't have any RCDs for the other circuits. I would put the new circuit on an RCBO but I'm concerned about signing off the installation with the other circuits not protected by RCD. Anyone know what the...
  9. L

    Dim lights that gets worse as I turn on more lights in the same circuit.

    Kitchen led lights have all of a sudden dimmed by about 30% no dimmer in the system. There are 2 switches for this set of lights. Regardless of which switch I use the lights are dimmed by about 30%. The lights will not come back up to 100%. All other lights in the circuit and through out the...
  10. J

    Kitchen rewire - old ring main - new radial

    Hello, Last year I had some electrical work completed in my house (New CU, SWA for garage, downlights) I informed the electrician that I will be renovating the kitching at some point so he ran a new kitchen radial circuit for sockets and hob and oven circuit. These are on seperate RCBOs, which...
  11. D

    Lights flickering on one circuit

    Hi everyone. I live in an older home that still has a few circuits with aluminum wiring. One of these is a lights-only circuit that contains 6 switches. All connections appear to be fine. Proper connectors and antioxidant were used for joining aluminum wires and pig-tailing copper to some of the...
  12. MrKaris

    Kitchen circuit wiring question. newbie DIY. #help

    Hello. I am new to wiring and could use some help getting this circuit wired in the kitchen . I am trying to get the source power to the GFCI and then through a switch to have the garbage disposal protected by the GFCI. I also have a switch that I would like in for the above sink light. Lastly...
  13. T

    Testing a multi point lighting circuit

    Hi Im an apprentice and just wanted to clarify domestic style wiring since i work industrial and don't deal with conventional wiring. in college and the AM2 the only exposure to testing lighting is of a single point that may be switched either one way 2 way or intermediate. that doesn't worry me...
  14. lozarus

    Second Opinion on Modification to Existing Circuit

    Came into work today with a fairly urgent requirement to install an instant hot water handwash unit in a small commercial kitchenette/servery - circa 2.8kw. Of course, it's in a right difficult area. As the handwash is over 2kW, I'd ideally like to follow OSG advice and give it it's own...
  15. R

    To many spurs on ring circuit

    Evening all, Been to a job on Fri where the customer had a condition report completed. Two of the remedial identified was that there were too many spurs off spurs on the upstairs and downstairs circuit. There’s are separate circuits both rings which test okay etc. I looked at upstairs one...
  16. A

    Shower circuit converted to a new radial circuit

    Hi, I`m looking for an advice. I have an electric shower that I`m not using due to boiler changed to combi and added shower over bath feed by a 6mm cable and 40 amps fuse. The cable is quite newish (blue & brown) compared with the rest of the house (red & black). I want to create a new radial...
  17. timhoward

    10 sq mm T+E distribution circuit supplying CU

    Can someone sanity check my thinking please.... An 80 amp PME service head, tails to meter, 25 sq mm tails into an enclosed fused isolator with 60 amp fuse in it. 16 sq mm from cut out into a MET. Gas and Water bonding connected to the MET. 16 sq mm main earth from MET to the fused isolator...
  18. N

    Well Pump Control Circuit Troubleshooting

    I have a 4-wire well pump (red, yellow, black, and green) which just quit. Cycling normally, then shut off and never came back on. I've gathered that yellow is the common, red is the leg for the start winding and black is the run winding. I've got a couple ohms (4-ish on my trusty Harbor...
  19. zaceverett

    Twin immersion same circuit?

    I've purchased a horizontal unvented cylinder that has come with 2 immersion heaters. I was hoping to use the same circuit the my existing tank used. What's the best way to wire in for 2 immersions? Upgrade the 2.5mm radial? Any suggestions welcome
  20. G

    Printed Circuit Board mounting requirement with boards that have exposed high voltage traces

    I am working within a project that involves access control and video, in a Georgia facility. Another unrelated installer is using properly sized generic cabinets with steel backplanes. I observed the low voltage components (logic controller, dry contact relay boards, etc) are being mounted with...
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