circuits

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  1. J

    Oven and cooker circuits

    Hi i have a double oven which is 5.8kw and induction hob which is 7.4kw there currently isnt a cooker circuit in the house but there is 2 spaces in the CU so am I correct in thinking I can put 2x32A breakers in and run 6mm cable to both .
  2. Marshall Kidd

    Splitting 3-phase circuits for 3 high draw theater fixtures.

    Hello. I'm new here so my apologies if this post ended up in the wrong forum. I have a basic understanding of phases and voltage and the lot. Today I'm trying to wrap my head around how I might be able to split one 3-phase 240v 50a source to accommodate 3 high draw theater fixtures. Here's...
  3. Gary Tollison

    Lighting circuits and possible cross-over

    Hello. I have a possible issue with the lighting circuits in my house. There are two lighting CCTs: Dropbox - 01.JPG - https://www.dropbox.com/s/ike2aygjja64pfm/01.JPG?dl=0 1 LIGHTS supplies: Lounge Kitchen Downstairs toilet 2 LIGHTS spplies: Hall Upstairs landing Upstairs bedroom Upstairs...
  4. T

    When old phase colours are used in socket circuits...

    Just finished work (10 pm) was wiring in a socket or two. As it was late had to keep me marbles about me! Strange feeling connecting blue into live.
    • The Ghost
    • Thread
    • circuits colours old phase socket used when
    • Replies: 38
    • Forum: UK Electrical Forum
  5. D

    Two socket circuits not allowing RCD reset

    hi folks, Been asked to go look at a job tomorrow as his RCD is not resetting - customer sent me some details and from what I can determine is this.... It’s only socket circuits that are on the RCD side of the board. The downstairs socket circuit and the kitchen socket circuit are both off -...
  6. soms

    Maximum permitted Zs values for circuits with TT earthing system

    Hello, I am assisting my supervisor and getting some first hand experience of completing certification by filling in an electronic copy of an EIC, working from a handwritten circuit schedule with test results and my memories of the installation work. I am at home so cannot ask him for advice...
  7. D

    Distribution circuits

    Good Morning I have a series of Henley blocks suppling db’s. Henly block are protected by an bs88 63amp fuse. We have a 2.5mm 6181y cable feeding a isolator which in turns feeds a fire alarm panel, this 2.5mm cable is around 0.5 metre long and within the fire alarm isolator, there is a 20amp...
  8. L

    Advice ref blinking lights all circuits

    Hi there, I should start by saying I am not an electrician, but am after some advice as we have a problem that we aren’t getting any answers on. In January, we had a new fuse board installed to replace an old edition one. This is a recent Wylex model with circuit breakers. The electricians...
  9. andysparkfree

    100ma 100amp 3phase main switch on TT system and rcd protection on the rest of the circuits question

    Hi all , my question for your brilliant minds is (ill first set the scene) 35mm 4 core swa coming from an external supply, 16mm earth ran out to an earth rod(ze at the distribution board main switch 0.35ohms) now this is quite a large installation with a 3phase distribution board in the...
    • andysparkfree
    • Thread
    • 100amp 100ma 3phase circuits main main switch protection question rcd switch system tt system
    • Replies: 3
    • Forum: UK Electrical Forum
  10. G

    Domestic favour, tripping RCD and redundant circuits

    I have been asked to look into a random tripping RCD. The installation is quite simple, now only only four circuits, None RCD protected side has only the lights and a redundant 16A MCB 2.5mm radial for which no accessory could be found, possibly disconnected outside lights but the circuit was...
  11. W

    IR test on lighting circuits

    whilst carrying out EICR I usually find it near impossible to disconnect all loads ( on lighting especially) I there fore only carry out IR on Line and neutral to Earth. However, when I see most other certs, they claim to have recieved 299 ohms on live to neutral? Am I missing a trick, or am I...
  12. P

    2 gang light switch on seperate circuits?

    As per the title is there technically an issue with having a 2 gang light switch with one switch on the lighting circuit and the other on a ring circuit (via an FCU). The ceiling light is on the light circuit and the wall lights are on the ring circuit. This isn't something I would personally...
  13. D

    Identifying circuits on equipment

    Quick one..is it in the regs to identify where circuits are fed from on sockets and switches or just good practice? Commercial job obviously. Cheers
  14. I

    Short circuits calculator (IEC 60909) for Android

    Friends, I need help with my app testing. Can I put my app link (Google Play) here? Free, no ads. This application (fault currents and voltages calculator) can be used for the following calculations: - three-phase fault current (IEC 60909); - two-phase without earth connection fault current...
  15. Dozer 73

    NEW circuits into non amm3 DB. ?????

    If I was to wire an extension on a house , and the DB does not meet amendment 3 , where do I stand adding new circuits into this DB , is it ok or should it be changed to Amm 3 DB Know I should know the answer to this but hey ho were not all perfect
  16. Gavin John Hyde

    Parallel earth path between 2 circuits

    I have a ring circuit (circuit 1) and a light circuit (circuit2) in a flat im working on and i have somewhere in the walls or ceiling a joined earth path. From what i have seen there is no obvious metal conduit, so it seems its either the ventilation system that is fed by the same ring and goes...
  17. Jymbob

    Isolation of lighting circuits?

    Me again, with another question which I fear will become more common as Smart Home technology becomes more popular. Lighting isolation: is it a requirement to have a switch which breaks the live circuit close to the light? Background: I've got some smart bulbs which I can turn 'on' and 'off'...
  18. P

    Kitchen Socket Circuits??

    Thoughts please... probably heard it all before ;-) At some point I will be having a new kitchen fitted and I am going to be carrying out all the electrical works and any advice on the modern wiring methods of today would be appreciated. I'm used to the old wiring methods, where it was about...
  19. Dave Jenkins

    3 gang, Two-way Light Switch has two circuits

    Ey up, Did a quote for re-wiring a kitchen. That was straightforward enough but the client wanted replacement dimmer switches fitting to an existing 3 gang, light switch. OK, easy enough, but he's had an extension to the back of the house providing a large dining area off the kitchen. Whoever...
  20. Spunkywads26

    Borrowed Neutral across Lighting Circuits

    I've go a situation where a property has 3 lighting circuits: Downstairs Ltg Upstairs Ltg Rear Downstairs Extension I've discovered that the landing light is fed via the ground floor lighting circuit but has a borrowed neutral from the upstairs circuit. I wanted to separate these on the...
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