circuit

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  1. M

    Maximum cable length lighting circuit

    Been out the domestic game for a long time, but now having to rewire my own house. Was wondering what the maximum cable length would be for a 1.0mm lighting circuit with 100w of leds? Is the max cable length the ‘maximum’ length of r1+r2 from conumser unit - up and down switch drops - to the...
  2. A

    Will an RCD offer any protection in a building with NO earth circuit?

    I live in Phnom Penh, Cambodia and people die here regularly by electrocution. There is no earth wiring in the buildings, just live and neutral. I am a member of an expats forum and the question arises: Will using an RCD device offer any protection at all? I understand RCD's will go off with...
  3. M

    110v 20amp circuit using existing #8 Alu wiring to 40amp breaker.

    I am abandoning an oven/microwave location that has an existing 220v 40amp (4-wire) circuit. I am leaving the wiring in place. I want to use the new counter space for a built-in microwave oven and coffee station. Can I use one of the 110v circuits in the junction box for a 110v 20amp receptacle...
  4. pythonrsas

    220 Breaker / 110 Circuit

    Hello Experts, I had an electrician visit my place for some repairs and when looked at my recently installed main panel (photo attached) he said that the panel is not setup correctly. He said that 220V breakers are connected to 110V circuits within the house. Could someone explain what the...
  5. R

    UK Old cable in dwelling light circuit

    We are currently renovating an old house after recently moving in. Whilst purchasing the property we received written assurances that the original 1920/30s wiring had been fully upgraded and subsequently tested. After removing all of the downstairs ceilings, it is clear than new electric 2.5m2...
  6. T

    Temporary Hybrid/Lollipop Circuit

    I'm in the process of renovating a house. As I go through room by room I am removing old plaster and as the cables are exposed at this point I figured I may as well get the wiring updated as I go. The ring main (~6 sockets) is currently fed from 2.5mm T+ E. Eventually I would like to have the...
  7. D

    Thoughts on this new circuit design? anything wrong with this

  8. M

    Can a 220 circuit power a 110 outlet?

    Is it ok to run a 110 line off a 220 circuit? Specifically, I want to add a 110 outlet near my hot water heater and it would be convenient if I could use one of the hot wires along with the neutral and ground to create the circuit I should also mention that the 110 line will almost always be in...
  9. Bob Geldoff1234

    Boiler off lighting circuit?

    What is everyone's opinion on taking a combi boiler supply off the lighting circuit? I doubt the boiler would pull more than 300 watts and with all the led lamps being used on the lighting circuit,I doubt it would come to more than a couple of hundred watts.A 3 amp fuse in the boiler spur would...
  10. Raptor0014

    Passing another circuit through back box

    Had a bit of a ‘discussion’ today with another electrician. Basically found a light switch in which the radial cable for a socket directly below (but about 3ft lower) passed through. Other electrician said it was wrong and shouldn’t be done. My take was that it is, at best, a bit of bad...
  11. S

    Put a ring circuit in a garage.

    Hi there. I'm a DIYer. Just bought a house with a double garage that has just one socket in it; and it seems to be just a single spur direct from the CU. I want to put in more power outlets; and was wondering whether it's permissible to remove the existing socket, put in a 32a fuse/breaker, and...
  12. lozarus

    Testing when modifying a circuit

    Afternoon all. Bear with me on this one... Despite having been involved in the electrical industry for many years, I'm only just about to embark on 2391 - its more of a personal endeavour than anything, having been very interested in inspection & test for a long time (I know, not everybody's...
  13. I

    will SPD protection now have to be added for an addition to an existing circuit

    can any one clarify if a SPD will now need to be installed when making an addition to a existing circuit? many thanks
  14. OhhhMy

    Residual Circuit Current Breaker triggering. Why?

    Hi! I'm new here, so, please, be gentle... Decided to add some extra features to my old and simple barn's electric system to make it safer and measure the consumption. It's a three phase 230/400 volt line. The neutral, as far as I know, is grounded at the step-down transformer. I don't have a...
  15. gmdaly

    distribution circuit from house CU to adjoining Garage DB2 EIC details?

    Hi, I have completed a EIC for a garage DB2 with five final circuits (no problem there i think). But for the distribution circuit from house DB1 to Garage DB2 I have completed a second EIC for this alone. The questions I have for the distribution circuit alone are: 1) For the EIC 'particulars...
  16. Izak568

    How to investigate a circuit if some devices pull too much current?

    Hello, If one device is pulling too much current, what should I do? Thank you
  17. S

    Messy choc block for lighting circuit

    I have just been in the process of changing some old 12v halogen downlights in the bathroom for bathroom for mains volt leds. My late father was a retired spark so know a little of doing some basic things. The previous downlight transformers had been wired into a choc block which was just...
  18. S

    New circuit in plastic consumer unit. Yes or no?

    I work with someone who really isn't happy installing new circuits into plastic consumer units. Sometimes he refuses to do it if the board in question isn't in a great state or if the existing wiring is spaghetti junction. Obviously the regs state that it's fine to add if the board conforms to...
  19. brokentechie

    Running ring main wiring and lighting circuit wiring together/in close proximity.

    I'm building a "media wall" type structure, to house TV, av equipment etc, with alcoves each side lit by Led downlights and I'll be extending my ring main also as part of the build. My question relates to clipping cables to the ceiling plate (2x3 timber) - is it acceptable to run 1mm T&E...
  20. D

    208v heater doesn’t work

    I have a 208v circuit that reads 208v across the leads on my meter; but when I connect a baseboard heater rated for 208/240v that works elsewhere in the same house it doesn’t work. Appreciate any assistance!

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