mains

mains

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  1. S

    Karcher SC4 fault tripping mains

    We have a Karcher SC4 steamer, it was working well until today. Now when you plug the appliance in it trips the fuse in the consumer unit. I have tried to plug it in elsewhere to make sure it was overloading, and it still does the same. I opened the device to take a look and run a continuity...
  2. B

    Sub Mains to a Load Centre in a Domestic Dwelling

    I am a retired electrician doing a home rewire. I'm taking my time because I fell about 3m off a ladder & put both bones through the inside of my right leg. That has slowed things down a lot... My understanding of the AS:3000 regs is that all circuits in a domestic residence must be RCD...
  3. T

    Does replacing a mains switch, which feeds an existing DB require all circuits to be tested on the DB?

    Hi Ive been tasked with replacing a mains switch, which is fed from the cutout and in turn supplies a domestic DB. It’s a BS88 switch fuse which I’ll swap like for like, but the existing DB, which is plastic will remain untouched. There will be henley blocks installed between the switch fuse...
  4. U

    Mains power to electric shower only 0.6v???

    90s house electric issues continues 🥲 So after getting some good advice here I've managed to sort out some of the heating issues so thank you for that everyone 🙏 I'm seem to have a few bugs and keep chasing problems So my current issue is downstairs shower only has hot water with no...
  5. M

    Extending ring mains on top of plaster

    Essentially I have a "normal" socket in a ring mains, i.e. one 2.5mm T&E going in and one 2.5mm T&E going out. I am looking to simply add two more sockets. Easy enough from a wiring perspective. But my question relates to the location of the wiring itself. The sockets will be cut into a new...
  6. 2

    Large cable protective device and enclosures

    Hi, thanks for reading this. Ive been asked to look at a job where the DNO connection (single phase 80A TT) is a long run to the final circuits. Small feeder box has been installed and the volt drop dictates 95mm cables are needed to take to another feederbox where the feeds into the building...
  7. R

    Mains tails EICR coding

    Hello everyone, I'm wondering if someone could help me with some EICR coding. I am aware that bringing mains tails into a fire rated consumer unit through separate holes can lead to some issues. I encountered this exact issue today for the first time and i am unsure whether this is likely to...
  8. B

    Mains Isolator Switch Advice

    Hi there, Any advice on this would be greatly appreciated! (Note, this is not a DIY, I'm using a fully qualified electrician, just posting here looking for advice) We need a new fuse board fitted in a property I manage, which we hope to use for short term lets in the near future (Air BnB etc)...
  9. J

    Mains Isolator advice

    Quick question. I want to put an isolating 2p switch on my incoming supply from the meter to the board. I want this to allow easier board changes in future. Tails are below the 3m. DNO have agreed to pull fuse to facilitate this work. Timing is perfect as they want to update meter and head...
  10. H

    Converting from mains power to battery power

    Hi everyone, I have a basic knowledge of electric but would like advice before I attempt, I have a electrical item that is powered by Voltage input: ~100-240V/50-60Hz - Output: DC 24V, 2-3A, I would like to make it portable by just using battery power, preferably rechargeable any help would be...
  11. J

    Mains cable to consumer unit top floor flat

    Im starting a re-wire of a top floor flat, they have run an 16mm T&E with a 6mm earth from the ground floor to the 3rd floor feeding the CU, replacing this cable is practically impossible as there is no way of getting down without going through other flats. Looking for some advice of how others...
  12. W

    Home Lathe with 3 Phase inverter tripping mains

    Hello - hope someone can advise please. I have a recently purchased second hand Myford lathe which has a 3-phase inverter (Siemens Micromaster 410) Lathe all works fine but regularly trips my RCCB 80A 30mA breaker taking out half of the board - usually when first powering on. The inverter is...
  13. T

    Comsumer unit - upstairs/downstairs ring mains

    Hello, I bought a new build and noticed the upstairs MCB is controlling some sockets on the opposite floor, so if I flick the upstairs MCB it's also switching off a socket downstairs (I think it's a spur) in addition to all the ones upstairs Is there anything within 7671 that states this is...
  14. ben8_n

    Cabinet for mains supply

    Hi all, any recommendations for neat and complaint ways to "house" a new supply -- the main electrical fuse, cut out, meter etc that on our house is inside the house near the front door. It's currently inside a cupboard that needs to come down, but am assuming I can't just cover with any...
  15. T

    Car charger Direct install or via ring mains?

    Just a question as I’m waiting for a new electric car to be delivered and they have included installation offer when it arrives free of charge. However, I’m a bit concerned as to whether they will need to get to the main switchboard which is all the way round the house which is going to be...
  16. J

    Exposing old mains cables, Is this safe???

    Hello. I'll apologize to start with as due to my lack of knowledge on the matter I'm likely to waffle a bit and call everything by the wrong name but hopefully you'll get my point... I am having some renovations done at home and need to have the electrical meter relocated slightly. We have...
  17. N

    Mains water bonding when only couple of inches of copper

    Not sure on this one. Mains water is coming up from the ground in lead pipe in bathroom. 2 inches of copper pipe before the stop tap. All pipework inside the house after stop tap is plastic. Does that 2 inch of copper pipe before stop need mains bonding?
  18. B

    Have the rules for ring mains changed over the years?

    I am sure when I qualified for the 16 edition we spoke about how to treat a ring main. I know the majority of the time we just learned how to read the book and how to find needed headings but I am sure we also spoke about ring mains. If a socket has two cables coming into the back box then it is...
  19. F

    Can I run mains cable inside hollow metal lintel?

    Hello I’m going to install a hard wired 230v security camera, incorporating floodlights, outside and above garage door onto brick. An exposed expanded metal lintel (that is hollow) runs across the garage door opening. Outside it has a decorative brick facing. The brick is not load bearing. I...
  20. D

    LED lighting Mains and 12volt DC on same circuit

    Hello I have recently moved home and I looking to upgrade lighting across the house to LED. In the kitchen I have found that there is installed a mains powered lighting circuit which serves five LED lamps (surface mounted and recessed) Included within the same circuit is a junction box into...

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