confusion

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  1. C

    light fixture confusion

    This doesn't make sense to me. Replacing this light for a friend...from the light switch the live romex cable has BOTH neutral and hot connected together, with hot coming from the light fixture to complete. And the neutral from the fixture connected with the ground. I've never swapped something...
  2. A

    UK 13A fuse kitchen grid switch, connection confusion

    Hello, I was about to replace the old tatty 8 gang grid switches in my kitchen with some new Varilight ones. The only problem I have is that the two old 13A fuse modules had 3 connections. There was a live wire going into the top terminal and then a single yellow into one of the bottom ones and...
  3. S

    A simple dI/dt confusion, Anyone like to try & solve it ?

    According to calculation : - 1uH coil is giving me 50A/uS for 100uS, If I use 4uH coil, it will give me 12.5A/uS for 400uS What I am trying to ask specifically is : - Will total time get increased by 4x ? Or It will only take extra 4uS for current to reach 50A, then for the rest of the time -...
  4. S

    Please solve this SCR Current rating confusion!

    If SCR has 9000amps at 50hz non-repetitive current rating. What will be it's non-repetitive current rating for 35uS ?? Or Can we use this SCR for 3600amps / uS for 35uS ?
  5. Dartlec

    EICR Coding Confusion wrt Supplementary Bonding

    Yes, it's another EICR coding question - hurrah! :blush: Inspecting a small 1 bed 70s ex-council flat that was going well. Main Bonding had been put in place in advance and most of the tests were as perfect as you could get. Seriously, if you wanted to set up a 'perfect' test rig I don't...
  6. B

    Hot tub confusion

    Hi, just finished fitting my hot tub and need to run a 45m length or armoured cable from the garage to it. Next to the tub will be a summerhouse with a couple of sockets in it nothing heavy just a phone charger and stereo. The wiring it used to have when I bought the tub was 16mm outer / 4mm...
  7. A

    Confusion about max wattage for light fitting?

    Hello I hope you are well, I have a question regarding this light fitting (BELL 10361 Retro Vintage Half Lantern - Black, PIR, IP54) on the product data sheets it states the max lamp that can be fitted is 42W is that 42W total or equivalent it doesn't state? So would a 18W LED GLS be unsuitable...
  8. Rattlehead85

    Emergency lighting confusion.

    Ok I have a confusing situation regarding some Emergency lighting. I have a string of 2D 28w lights in a ward corridor at an nhs unit which are switched from a nursing station with a key switch next to them. It appears that the key switch only breaks the permanent feed to the Emergency fittings...
  9. D

    UK MCB type confusion.

    I've noticed at my grandparents house that all the MCB's in the consumer unit are all type C, every single one of them. Including the ring final circuits and lighting (there's no fluorescent lights in the house at all). The house isn't that old as well. Maybe about 16 years old. With me being a...
  10. N

    2 way wiring old UK wiring confusion

    Hi I need some help. I have a 2 x 1 gang 2 way light switches - 1 on the upstairs landing and 1 downstairs. They both used to work to control 1 light but have recently stopped. I have opened them up and messed around and now cluelesss how to put them back! The upstairs switch (2nd Picture)...
  11. M

    Bit of confusion regarding downlights

    Hi all, I am a practicing electrical maintenance engineer but my background is electrical installation/inspection and testing however im a little out of touch (I do have 18th however!) don’t use it, you lose it and all that. so my friend has recently had a EICR done ready for the imminent...
  12. T

    AM2 lighting circuit - confusion

    I know this has probably been asked a dozen times on this forum but I just want to make sure that I'm doing this the correct way before going into my exam. I got told that in the am2 I need to have neutrals at every switch in connecters. I have never done it this at work hence the confusion...
  13. G

    EICR Question - Lots of confusion out there ....

    I need to have an EICR since I am getting a small HMO going, and this is the current fuseboard, seems REG16 one.. I had a few electricians coming around and some say they have to change the board, some says I need to RCD all the circuits, some says they only provide a paper report and some say...
  14. S

    Economy 7 - need confusion clearing up please!

    We have an Economy 7 meter and tariff. There are 2 separate fuse boards and one meter with the dual rate on. Am i right in thinking that ANY electricity we use at night will be cheaper as the meter has a 'timer' to switch to the cheaper tariff? If so then why is there the need for a separate...
  15. S

    Electrical shower confusion

    Hey guys, I'm currently doing my level 3 install qualification and I've been asked by someone to replace an electrical shower unit for them, now from my knowledge I am allowed to do said work as long as the power rating of the shower is the same as the old one and that it doesn't need a new rcd...
  16. W

    Cat 5 confusion as to which way

    Something soo simple... cat 5 I’m heading into my am2 exam next week having never terminated the cable. I’ve searched online and I see different configurations everywhere I’m confused as the numbers don’t line up with the colours the bottom diagram to the table also I’ve seen pictures of the...
  17. gazdkw82

    Part P ...................

    I'm almost embarrassed the bring this up again but the whole thing still coming fuses me. I head again today, a experienced spark say "iv got part P" when talking about qualifications. I understand what part P is and I have past my building regulations exam as part of my level 2 however, how...
  18. R

    Qualifications confusion.......

    Am currently extending house and will be installing a smart home system throughout. My builder's sparks will be doing whatever is required to comply with regs etc. I'm also intending to operate the smart home installation stuff as a bit of a future career change/semi retirement business...
  19. Doomed

    Confusion two rate electric meter?

    Got an e-mail from an estate agent we look after rented properties for: "Hi, As discussed, the tenant of this property has advised that in order for them to have a smart meter installed the meter in the property needs to be changed to a two rate meter. However, an electrician will need to...
  20. P

    Coin Meter confusion

    Hi all.. needing help with an old Smith coin Meter. I've moved into a flat that has a £1 coin operated meter that the tenants upstairs use for their immersion heater. This is how it works.. they put in a £1and that in turn runs off my electricity. I have told my landlady who says everything is...
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