electrical wiring | Page 4

electrical wiring

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  1. Les Macaulay

    Inspection of wiring to new industrial dish washer

    Inspected a final circuit for a new dishwasher of the commercial type, rated at 4.3 kW, about 50M from the D/B. Final connection joint to the appliance flex comprises connector block in a dry wall box with lid lying on floor of commercial kitchen. C1, C2 or C3? Isolating switch on opposite...
  2. D

    Hot tub supply design?

    Is a hot tub classed as a 'water heater thermostatically controlled' according to table 3.2?
  3. Strima

    18th Edition Amendment 1 Corrigendum

    So they messed up the first amendment and have released another corrigendum: Link to original source: https://electrical.------.org/media/2420/bs-7671-2018_a1_2020-corrigendum-may-2020-read-only.pdf
  4. M

    What is maximum distance I can run 12 gauge wire to a shed?

    Hello, Need some advice. I have a 20amp breaker with 12g/2 underground feeder wire running to an outdoor GFIC outlet. 38 feet from breaker box to where it leaves the house and then 32 feet buried 24 inches deep (no conduit) to the 20A GFIC outlet. So from breaker box to outdoor outlet is a...
  5. J

    Overload, Overcorrect and ADS...

    Hi all, probably a couple of silly questions here, I know. I just need some clarification if possible. Firstly. Is there a difference between overload and overcurrent? I've always assumed they are the same thing but recently I have been considering this more and I'm reasoning that overload...
  6. N

    Question about electrical wiring in the ceiling

    Hello, I decided to tackle a leaky skylight replacement in my living room. It's an acrylic bubble 18" square and it was installed when the house was built in '86. To make thing more complicated for myself, I purchased skylights that are 45 3/4" by 22 1/2" (wife wanted larger skylights). I...
  7. L

    Submain/RCD Selection

    Hi there, I am new to this forum and I am finding the help very useful. Could someone please advice me on the following. So If I have a 60A Cutout fuse to the property how do you size the main switch, could a 100A be used. Also how would you size the RCD’s, why would one be 63A and another 80A...
  8. R

    Adding more outside lights to same switch inside

    Hi. I have an outside porch light which has a switch just inside the hallway. I am adding 2 more outside lights to be switched on using that same switch. I have ran 1mm cable from the switch line and neutral & earth to the new light and continued that to the 2nd new light. When I switch the...
  9. J

    Sub mains

    Hi all, I’m about to pull a sub main to supply an annex 16mm SWA, my question is how to do use the earth as a 63amp fused isolator switch only takes a Line and Neutral? or if anyone has any tips or know of a bit of kit that can help? Cheers
  10. A

    New Consumer Unit

    Hi. I'm new on here. I'm not an electrician. I'm just seeking some advice. I hope this is the correct section. My parents have just had a new consumer unit fitted. The electrician is NAPIT registered. He didn't leave an installation certificate. When I phoned him and asked about this he...
  11. W

    Kitchen rewire and isolator switch

    Hi guys. Electrician will soon rewire my kitchen and some questions arises about sockets and isolator switches. I think they look ugly and don't want them on sight. Is it possible to install only two isolator switches one for oven and hob, and the second for electric instantaneous water heater...
  12. M

    Conductors in parallel

    "433.4 Overload protection of conductors in parallel Where a single protective device protects two or more conductors in parallel there shall be no branch circuits or devices for isolation or switching in the parallel conductors " I am in debate with another spark. I have installed 2x2.5mm...
  13. W

    Burying Selv cable

    Hi, I hear the regs for burying cables don't apply to SELV cables anymore? Is that right? Are there any requirements for buried SELV cables now? Yellow tape, minimum depth, mechanical protection? I'm shielding at home for 12 weeks and don't have access to my regs book otherwise ild check...
  14. A

    Freeing up space in consumer unit

    Hi guys Hoping you guys could help. I have an 8 way RCBO board with all breakers used for dedicated circuits. Ideally I would like to run a dedicated circuit to a new combi boiler I've had fitted rather than it be plugged into the ring main to prevent nuisance trips etc however as mentioned...
  15. S

    Rewiring Bungalow and circuit design for Kitchen.

    Hello, I am getting a bit bogged down with detail as I always try my best to meet every best practice but I am very out of practice as I have been working outside the industry for 15yrs. All help appreciated. I am refurbishing my small 2 bed bungalow and have some questions for all the experts...
  16. D

    Lighting circuit

    Hi All, WIth new reg is it a true that the every lighting circuit have to be protected by rcd ?
  17. J

    Voltage Drop Design Current?

    When calculating voltage drop and using the formula mV/A/m x Design Current x length / 1000 = v Do I use the design current value after rating factors have been applied? Thanks again for any help.
  18. T

    Is an accessible switch not necessary?

    Recently the isolation switch of our shower broke, the electrician who came over to fix it have removed the switch completely and have directly connected the shower to the circuit breaker instead the box(red arrow). According to Installation and operating instructions by the manufacturer I have...
  19. B

    Why does the UK use rings for sockets?

    I take it you're allowed to use radials for sockets? So why does anyone bother with rings, seems like extra hassle to me.
  20. Nelder

    Non Domestic 20A Radial

    Hi, I'm curious to get peoples opinions on this non domestic situation please: A 20A SP&N radial Fed from a 20A MCB 70 degree singles, grouped in metal trunking fails with 2.5mm singles and even 4mm singles. I vaguely remember reading something that, if a cable is loaded to less than 30% its...

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