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  1. S

    UK 32a supply for a hot tub of a PME supply.

    Hi there, I have been asked to install a 32a supply for a hot tub for a client. I haven’t installed a supply for a hot tub before and having done a bit of research I am getting mixed answers about doing this on a PME system. I have a DB under the stairs with plenty of spare ways so I would be...
  2. S

    UK CU in Meter Box & Henleys vs REC4

    Hi everyone, I'm still training so some advice would be appreciated :) We have a shed about 60m from the house where would like a supply. I've already ran some 2 core 4mm SWA and wired up a CU with a 30mA incomer, it will be protected upstream by a 16A MCB. I went for 2 core because I want the...
  3. SJD

    Solar isolator (to distribution board)

    I don't do PV, so not overly familiar with specific regulations. Yesterday I was changing a consumer unit, and the isolator for the PV was adjacent to the consumer unit. Due to needing a bit more space, I had to move this isolator a few cm and noticed it was single pole, switching L only. A...
  4. 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...
  5. M

    UK (IMAGES) Connect 20amp Isolator Switch (For Split AirCon) – Need Help.

    Images Now Included. Hi there, a new DIY member here based in Hong Kong, where getting reliable electricians can sometimes be a challenge! I've been finishing off a rennovation project and one of the last jobs is to attach a 20amp isolator switch for an indoor split AC unit (Panasonic). The...
  6. S

    Do I need an inline fuse between my alternator and battery isolator?

    I purchased a 95 amp battery isolator and my alternator pushes 95 amps but I'm assuming that it may spike above that occasionally. Should I put a fuse between the two? I am only aware of 100 amp maxi fuses would that save the isolator for damage or do I need to purchase a battery isolator rated...
  7. N

    Should a shower isolator have a flickering dim light when off?

    Hi, I'm not an electrician, but wanted to ask for some professional opinions. My parent's shower isolator stopped working, so they enlisted the help of someone who they say is a 'qualified electrician'... Anyway, the neon is flickering when in the off position, and a brighter (non-flickering)...
  8. D

    UK Shower isolator

    Quick question... Is there any requirement to have an isolator for an electric shower in the room or immediately outside?
  9. S

    Insulation LN Test Fail through cooker isolator

    As it says really. When testing LE or NE resistance > 300M ohms but between L and N I was getting a reading of about 0.2M ohms. Could it be the BG cooker switch that has two neon lights that is the problem? If it is, after shoving 500V dc through them, should I replace this erstwhile brand new...
  10. P

    Bathroom Extractor fan isolator location

    My client wants a wall fitted extractor fan for their bathroom. Normally i fit the isolator outside above the door but the client is against this. Is there any reason why it can not go above the fan at high level so zone 3. I can not find anything saying you can not but i can not find anything...
  11. L

    shower not working

    Shower not working after new consumer unit fitted. It's not the shower or isolator switch that is at fault. Source URL: DIY Electrical Forum - https://www.electriciansforums.net/forums/diy-electrical-forum.64/
  12. T

    Advice on 461.2 needed

    Hi folks, Just need a bit of advice regarding whether or not neutrals require switching. - 3 phase board, 3 pole main switch, neutral is un-switched. 416.2 (ii) states that switching of the neutral is not required if the conductor is reliably connected to earth by a low resistance to meet the...
  13. J

    What size dc isolator needed

    Just a quick question. We have a yard with no electric up there so using a 12v car battery connected to an invertor to power 230v lights. I'm wanting to connect a dc isolator from the battery to inverter so we don't have to keep connecting the clips to the battery and can use turn the isolator...
  14. C

    Roof isolator ELV array

    Hi everyone, I have asked 3 different installers who answered YES, NO, and I will have to find out. On a small ELV solar array (74V/18A) is a rooftop isolator required in the regs? There will be 12 x 250W panels (VOC 37V ISC 9A) feeding 2 MPPT controllers, Victron 100/50 and 100/30 Panels will...
  15. M

    Isolator before the meter

    I wish to find out what’s people’s thoughts on isolators before the meter? Typically they are installed after the meter and before the CU, but does anyone know if there is any reason why it cannot be placed before the meter? Aside from what revenue protection like or not, is there any legal or...
  16. S

    Location of isolator switch - bathroom fan

    Just having a bathroom fan installed. It's an intelligent unit that runs continuously but thought it best to have an isolator switch. Have been told the isolator switch has to be outside the bathroom on the hall wall above the bathroom door. We would prefer to have it in the hall cupboard...
  17. Z

    UK Fused Switch vs Isolator

    My oven has a switch above it, I think this is called an isolator switch, but my dishwasher and washing machine have a fused switch. My question is why wouldn't you put a fused switch above the oven also? wouldn't this make accessing and replacing the fuse easier? Installation was done at the...
  18. James

    Cooker isolator

    Right, I try to stay away from anything domestic but was asked to do a favour for a friend. Freestanding electric cooker Hob, grill, oven All a single supply 32A max Previous spark has put in supply, nice isolator with built in socket and even brought a cable down to a connection unit behind...
  19. C

    Please identify this isolator

    Come to carry out some works on this property. This isolator is between the DNO Head and Meter. Full set up picture also included. Old TT System now convered to PME. Cheers
  20. J

    Multi way switch fuse isolator

    Anyone know of a MSDB type panel to install after don and supplier equipment similar to a MSDB that will take 18 individual cut out/ meter feeds for distribution of the new sub mains to a block of flats. 9 off peak and 9 peak to 9 flats. To be switched and fused @ 60 a. So tight for space don’t...
  21. C

    Domestic Electric shower pull switch isolator

    Hi, my neighbour has had to change his electric shower (6kw) pull switch (32A) 3 times in 4yrs. Apart from it possibly being poor quality switches he,s replacing, I was wondering if there is any reason not to leave the pull switch isolator in the "on" position. Thanks
  22. D

    Extractor fan to timer type

    Hi I’m thinking of changing an extractor fan (in a WC) to one with a run on/timer. The current set up doesn’t have an isolator, and wiring runs from the light bulb to the fan, which is sited in the ceiling about 18” away. The fan is vented through a flat roof above. Now, I realise that i’ll...
  23. Gary Tollison

    DNO-CU isolator switch install

    greetings :) I’m looking at getting an isolator switch put in just before the consumer unit. DNO has quoted £138 incl VAT for the job. Now, I have lvl 3 domestic electrical installer diploma in the bag, and am not far from going for AM2. Is there anything I can do on the consumer side to help...
  24. S

    RCD tripping when switching oven isolator off

    Hi all. I was called to a house recently where the occupier reported that when they turned the oven isolator off the RCD would trip. So I tried it and that's exactly what happened. There was nothing switched on on the oven at the time. When the oven is on it works fine. It is an integrated oven...
  25. B

    100amp Isolator switch required

    Hello everyone. I'm hoping you can advise. I am in need of a 100amp fused isolator switch with a tiny footprint. Any recommendations please? Thanks
  26. E

    3 phase isolator for a shop/flats above

    Hi All, Have been reading forums for years now,time came to ask for advice. Have a job to fit main 3 phase isolator for a shop with flats above.About to 2 nd fix the flats now,when the supply is sorted.There was a single phase to the flats,done some years ago,without any isolators.Now the...
  27. S

    Continual problems with Shower isolator.

    I get regular work from a student landlord. In one of his properties the shower isolator switch has burnt out on the feed side several times. I've replaced the switch twice (last time with an MK) and the shower's also been replaced. Insulation resistance on the circuit is >500 and the MCB...
  28. R

    Kitchen 3 gang isolator grid

    Hi guys. I've had my kitchen 're fitted and in doing so 're wired. The hob and cooker both off of 32 ampseperate breakers in 6mm cable. The rest is on a socket loop 2.5 mm cable in to a 32 amp breaker. But linked into the loop is a 3 gang isolator grid for cooker hood fridge and washing...
  29. R

    1.5mm coming from a 20a isolator

    What is people’s opinion on 2.5mm swa entering a rotary isolator and a 1.5mm swa leaving on a 20a mcb? Having a bit of a discussion with a colleague.
  30. R

    Security Roller Shutter Door Isolator

    Hi All I'm trying to find an isolator that will take a class 4 security padlock for a factories roller shutter door, this is to comply with their latest insurance assessment. Can anyone point me in the right direction please? The usual 16/32A rotary isolators do not have a big enough hole for...
  31. B

    16A rotary isolator help

    Currently have feed to 16A rotary isolator, I’m gonna come of this with 2.5mm to a socket then to a fused connection unit to feed 2 lights if lid this ok
  32. L

    Domestic Consumer Unit - Isolator and earthing

    In the future I would like the upgrade the consumer unit within my flat as to be able to add additional circuits (as the current one is plastic and is tiny). However there is no means of isolation from the incoming supply, there is also no earth from the incoming supply either which is another...
  33. D

    Certificate for replacing a main 200amp isolator

    Hi Guys just replaced a 200 amp main isolator in a factory along with a replacement 3 phase board should you do an installation cert or a minor works as it's like for like
  34. cprfenom

    How are fuses installed in this isolator

    Hi All, Probably an obvious and stupid question, but how do the HRC BS88 Fuses get mounted in this Isolator
  35. Electron

    Broken 13A Switch Fused Isolator?

    Whilst checking for a tripping RCD I found that a 13A Switch Fused Isolator, for a double socket behind a washing machine and a dryer, was giving various voltage readings when in off position, 240v when on and stayed at 240v when switched off. This video shows the problem...
  36. KEV 1 N

    Lovely old Isolator found in Cellar

    Found this in the cellar of an old house in Durham... The neutral is fused so I’m guessing it’s “really old” Any body know roughly the era it would be?
  37. F

    Domestic Bathroom extract isolator

    Hey peeps, I have a movement sensor in my en suite which turns on the extract fan. Trouble is, it's been installed so that it only triggers the fan when the light switch is on. I want to rewire it so that the fan comes on irrespective of whether the light is on or off (but obviously still...
  38. Ian1981

    Mccb used as main switch isolator

    A question regarding the use of a mccb as a 3 phase main isolation switch to a DB. Is it a necessity? Current set up is I have a 3 phase 70mm supply feeding a DB. The origin of this supply is unknown, hence I’m getting northern power out to investigate as the main cut out earthing arrangement...
  39. B

    Remote Isolator On Locked Disboard/CU

    Afternoon All, Maybe an odd question. For the last 8 years I've been in this industry I have always fitted single and 3 phase disboard/CU's with locks and no remote isolator other than on a locked main panel. I'm on a new job where we are using a mix of Siemens 3 phase boards and Crabtree...
  40. M

    New fan isolator switch - different markings

    Just joined for help - hello all :) I am NOT an electrician, but I am able to switch off the supply to change light switches and plug whatever was in L1, L2 or Common into the new switch. I bought a new chrome fan isolator switch today to replace a nasty plastic one however, and the markings...
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