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  1. A

    How to ensure correct phase rotation on generator

    Hi all, Might seem like a silly question, but I have a client who wishes to install a 3 phase generator to back up the supply of an office building. The client approached me and said before the job commences, he wanted to establish if the phase rotation of the generator would match the phase...
  2. S

    Is this correct?

    Hi all, I have an upstairs landing light which never comes on any more. Is this wiring correct for the downstairs hall way light to control an upstairs landing light (which has a single gang) ? I didn't do it I just opened it. The downstairs light works fine but the upstairs doesn't at all...
  3. V

    Correct Method to extend CT Clamp cable for EV Charger (Also should it be earthed)

    I'll start with the problem. I've installed two Hive Mini Pro 3 EV chargers, and both have had the same fault, which I think I've now isolated to the CT Cable (Not the clamp or its direction). Essentially if I connect the CT Cable to the EV Charger and enable smart charging, the EV Charger...
  4. Budgie_42

    Does This Installation Look Correct?

    Hi all, I wondered if you could give us your thoughts on our friend's installation? I've included some photos. We're sure that there's something wrong with it, but we wanted some expert opinions. Here's a bit of background: An electrician changed the original split distribution board and...
  5. M

    Correct Conduit Assistance

    Hi, i have built a log cabin and now routing cabling. I want to do this on the outside as it looks better. Can i ask if i can safely use the conduit from toolstation, here... 25mm Heavy Duty Round PVC Conduit - https://www.toolstation.com/25mm-heavy-duty-round-pvc-conduit/p66251 It has to be...
  6. Trevreg

    Correct earthing method for house?

    See attached photo of my new 3 phase supply at my house. Tails supply a Schneider 3ph board. Sparky is in two minds about the correct earthing method as the powergrid haven't supplied an earth. What's the correct method?
  7. M

    How to find the correct replacement transformer for a lightstring.

    Hi all, No electronic knowledge here. The plug/transformer of a led lightstring is fried. Now I am trying to find a replacement on Aliexpress. Since we live in Papua, its the best option. But I cant find one with the same numbers. My fried transformer has: PRI (primary) 220-240V ~ 50Hz...
  8. D

    Correct MCB sizing or not

    Hi, I recently discovered at my brother in laws that he has a circuit which feeds a outbuilding, but we also discovered that it’s attached to a small part of the downstairs sockets towards the rear of the house! The concern is this outbuilding then goes on to feed another small shed.. is this...
  9. B

    Correct OCPD for disconnection times.

    Simple question (or so I thought) What would be the Correct OCPD to achieve correct disconnect times for a 200amp sun-main with ze of 0.26 tncs. What are everybody’s thoughts??
  10. S

    Choosing the correct circuit breaker value

    Hello. So, I would like to know how I can choose the correct circuit breaker value when doing a new installation. My example is: I have 16 rooms. Each room has its own electrical board (main breaker is a 220v, 32A, a lighting cb and one for socket outlets) I want to add a LV switchboard or a...
  11. JohnNN

    Correct wiring for programmable room thermostat

    Hello, I have a regular boiler doing room heating only, with a Drayton programmer (for time) + a Drayton dial stat (for temp). I've bought a Honeywell T3 programmable stat to set diff temps at diff times. Old Drayton stat (mains powered) had 3 wires (red, blue, yellow) + E (see pic) New...
  12. B

    UK What’s the correct way to enter RCD’s on a split load board on a schedule of test results?

    Would entering each RCD as a line on the schedule of test results be correct? If so, what would be entered in boxes such as Zs?
  13. A

    URGENT - Please advise if this wiring is correct?

    I have a tenanted property which I bought about 7 years ago. I went into the loft because the pull switch when turned on was causing a short. I called an electrician but he turned out to be useless. In the bathroom we have a round bathroom light, pull cord switch, an extractor fan and an...
  14. H

    LED touch mirror - correct way to switch off?

    We have had two LED touch screen mirrors installed in our ensuite. You have a touch button on the mirror to switch off and change brightness and colour. It is intalled so there is a switch on the wall as well - both mirrors are on the same switch. Hoping someone can help settled a debate - I...
  15. A

    Help on correct isolation switch.

    Hi I am not a electrician. I wondered if anyone can help with identifying which isolation switch is required. I have UK power networks coming January next year to install an upgrade of my electrics main cable. It will be a 95mm three phase cable. I have be told that I have to install a suitable...
  16. M

    Where is the correct place to terminate a seperate earth ran with a SWA ??

    Hi all. I have noticed there are two schools of thought here when running a separate earth with a SWA to a large DB, where is the correct place to terminate the earth ? . We can go straight in to the internal copper earth bar as we have spare unnumbered holes for it , or we can lug it and go on...
  17. T

    SWA Carrying DC - Correct way to earth

    I know PV installers sometimes use SWA to carry DC into the house especially when the PV is ground mounted. Can anyone help me understand the correct way of doing the following: 1) Earthing the SWA armour, should this just be connected to the house earth as it would for AC or something else, I...
  18. S

    Correct way of routing SWA supply for flats ?

    Hi Fellow electricians, I’m recently qualified and I would like clarification on swa supplies for flats, my boss says this is okay but I’m not sure. So my question is if my supply is downstairs can I run my SWA through joists under floor boards and stud wall cavities without rcd protection. it...
  19. R

    Correct cable for 36w Fluorescent light batten?

    Hello folks, wishing you all a very happy weekend. I'm just about to buy some cable to wire a 36w T8 Fluorescent light Batten to a 3 pin plug. (I will use 3 amp fuses & 0.75mm 3-core flex). As these lights can get quite hot: would it be an idea to buy a Heat-resistant Flex cable? Or would...
  20. kreatiff63

    Flickering lights (am I using the correct thickness of wire?)

    Using a tuturial from a college lecturer, I've installed 2 way lights in our hallway. The cable I've used is 1mm lighting flex (2 core). The process I've used is taking the power to the switch. So I've used the permanent line from a neighbouring switch (4 gang) and connecting this to L2 where it...
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