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circuit

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  1. 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...
  2. E

    Several Lightbulbs Have Dimmed and Gone Out on the Same Circuit Breaker!

    Summary (TL;DR) Several lightbulbs in my home supplied by one circuit breaker dim over time and go out in about a year. Right now, the ceiling light in my living room won't turn on at all. It will turn on, go dim for 1-10 seconds, and then shut off completely. There are a host of other...
  3. 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...
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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...
  11. 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...
  12. 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...
  13. 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...
  14. 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
  15. B

    Existing 14/2 Romex in 3 way switch light circuit

    Just bought an old house (about 30-40 years old) with a separate shop building. I am in the process of replacing old fluorescent fixtures with new LED fixtures. The lighting is controlled by 2 switches, one at the back door and the other at the front. The wiring appears to run from one switch...
  16. kassem999999999

    can all car modules cause a short circuit? test light stays on unless i unplug every single module?

    can every single car module cause a short circuit? my test light stays on between batt and terminal unless i unplug every single module? any advice?
  17. S

    Pendant lights and downlights on the same circuit

    Hi, asking for a friend in Australia. She wants to install two Pendant lights over a kitchen island and four downlights all on the same switch. The current wiring to the single light in the kitchen is earthed. The 2 new pendant lights have earth connectors but the 4 new LED downlights have...
  18. Rarbur

    Lighting circuit trips RCD but not MCB, can’t find E-N fault

    Long shot but thought I’d try, have a lighting circuit that trips the RCD as soon as the neutral touches the neutral bar for said RCD. Bypass that and it works fine just on an MCB so would think earth-neutral fault, but doing an IR test between N and E shows as a pass (>99M ohm). So unsure of...
  19. A

    Circuit Diagram Help

    Hi all, I've been getting into electrical work these last few months, and have gone from doing rudimentary battery-switch-bulb diagrams to increasingly complex circuit diagrams as a hobby seeing as how I've just retired and need something to do. I've been trying to explain AC-DC converting to...
  20. Smasher

    Cooker circuit with new appliance not matching

    Cooker circuit has B40 MCB in the CU for the cooker, confirmed wired to the cooker outlet throughout, via a cooker switch & socket with a 10mm cable. Issue is new cooker has a 1.5mm cable (fitted by manufacturer see image). It is 3.22KW rated load, and 16A fuse rating. The cooker connection too...

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