query

  1. S

    Light switch wiring query

    Hey all.. Newb query but I've tried all combinations and no joy.. I'm refurbing a house and wiring seems to differ circuit to circuit.. I'm changing light switches in kitchen and corridor.. Both wired as found however now lights won't turn off at all.. Both rooms are 2 way and the kitchen...
  2. W

    Sockets wired in black rubber query

    testing a property there, the sockets were wired in black rubber 2 core with bare stranded earth coming into the boxes. Done all the Ring tests and everything was fine, continuity between all conductors and R1+R2 fine also. Just wondering is it safe because you got the 2 core cable without a cpc...
  3. J

    LED Bulb query

    Hi, Not sure if anyone can help but I have a bulb/lighting query. I've noticed my parents in law still have halogen bulbs on the main light in the kitchen. I was thinking of being helpful and swapping these for LED (warm white). I have attached an image of the current bulb but I presume I'd...
  4. V

    12v ride on modification query?

    Hey, im attempting to further modify my kids 12v quad and need some advice. I have swapped the original motors for a a pair of 65w 35000rpm 12 dc motors. Originals were 45w 12000rpm. Motors run and seem a lot quicker with the rear wheels off the ground however on the floor and under load have no...
  5. M

    Commercial Property Rewire Query

    Hi Guys Just thought id ask the question as I've been asked to rewire a commercial property, and I don't do much commercial as it always has to be done tomorrow. Anyway its a basic setup Ring Main sockets and LED Panel lights. However when I've gone to the board I can see its an old board...
  6. S

    TN-S earthing query

    Hi everyone, This might be a silly question but I have been asked to look at job where they would like a new garage supply, its a old property with the re-wireable fuse board but previously someone has tapped off the meter to an additional RCD unit which was used for a shower (no longer...
  7. D

    DIY buzzer alarm query

    Hi I’m new to the forum and have no electrical background other than changing plugs and light fittings at home. My house was recently targeted by burglars attempting to get in the house by snapping the lock whilst I was asleep. So I have had an idea to fit a solar powered PIR light pointing...
  8. T

    Outdoor Lighting Query

    G'day. I've built a pergola in the garden and existing outdoor lights are for the bin. They are RCD protected mains wired, with a switch in the kitchen, pretty much standard PIR and GU10 type fittings: Looks like this What I'd like to do is replace this fitting with some 'festoon' lighting...
  9. L

    Cable query

    Hello, I know that for 4-20ma transmitters twisted pair cable should be used with the screen grounded at one end only. However for digital signals ( limit switches , push buttons ) can 2 core/ part of a multi core cable be used ? Thanks
  10. R

    Wire gauge query when doing relay conversion for headlights

    Hi All, The headlight (Dip and especially High Beam) on my motorcycle, is know to be able to be greatly improved when converting the wire feed instead of being via the switch, over to a more direct feed via a couple of relays. At the same time instead of the 18 gauge wire via the switch being...
  11. T

    Consumer unit query

    My parents have been having trouble with their electrics recently. They had their house refurbished a year and a half ago and discovered some pretty awful DIY wiring from the previous owner so had a significant portion of the house rewired as part of the work. Despite this, they have been having...
  12. Dave Appleby

    Commercial site query.

    Sorry for a bit of a long question. For what it's worth this is Scotland. I have been asked to quote a very large job in an old commercial office space. Site is being taken over and converted to a community church. Work is of a large scale, removing a lot of wiring as multiple walls being...
  13. B

    Alternator Electrical Query

    Hi, When testing the diode on a car alternator all the tutorials state place a multimeter to diode setting, place the + cable to the casing and the - cable to the battery post ( B post) and you should get a reading of .5v to .8v. Swap the cable positions i.e. the - cable to the casing and the...
  14. S

    EICR Coding query

    Hi all, I have recently carried out an EICR on a big house and am struggling with coding on quite a big issue. The main tails & earth's are connected into Henley blocks, then looped into 2 separate consumer units right next to the service head/meter etc. Then there is a 3rd set of tails which go...
  15. DJAndy

    Oven selector switch query

    Does anyone fault find appliances? The element in a fan oven was >500Ω so I replaced it, still no heat. Got the back off and my multimeter on it for a bit of disconnected dead testing: thermostat <1Ω overheat cut out <1Ω selector switch - grill element, light, & fan connections all <1Ω fan...
  16. J

    Insulation Resistance query

    When doing domestic testing, I spend quite a bit of time removing loads & vulnerable equipment prior to carrying out IR tests- allowing me to test between L - N without risk to vulnerable equipment or getting inaccurate readings. I’ve spoken to a number of sparks who go straight to testing L&N...
  17. J

    Schedule of Tests Results query

    I’m new to the forum so first of all a quick hello ? I have my AM2 in the near future & got a query regarding the schedule of test results, namely the cable reference method and cable type. I know reference methods can be found in BS7671 (APP 4). Where there is more than one method for a...
  18. cliffed

    Query on Zs measurements

    Did an install ages back,another company did EICR & C1 Zs on Mccb Square D breaker. Not got all the details yet but anyone know the Zs acceptable on a 630 A Mccb.. The orig measurement was 0.01 ohms.
  19. M

    Outdoor floodlight Grey wire query

    I bought an outdoor floodlight to replace a faulty one. Once I removed cover I can see old light has 4 wires, Red, Black Green/Yellow and Grey. New light is only 3 wires Brown, Blue and Yellow. So I’m thinking Red to Brown, Green/ Yellow to Yellow, Black to Blue. The Grey wire is the one...
  20. B

    Wiring query for external light

    Evening all, I have a (hopefully) quick question about wiring up an external porch light. We moved in to a new property recently and outside the back door there are a bunch of wires (see photo) where clearly an external light existed but has been removed. Inside there is a switch which I'm...

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