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isolator

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  1. Kingers

    80A DP mains isolator

    What would you recommend as an 80A DP mains isolator switch? Background: My DNO fitted a 100A cut-out fuse on 16mm2 service cables, despite their own published policy requiring 25mm2 service cables for such a fuse rating. (At least, the fuse carrier is labelled 100A). So, they are coming out...
  2. N

    Hob or oven isolator switch?

    HELLO I have to install one oven(13amp) and one induction hob (30amp) but those appliances not next to each other!2 meter between them! just i would like to know ,which appliances need localy isolator switch whitin 2 meter?! my plan to put oven isolator switch in the cupboard ,where will be...
  3. N

    size of earthing conductor from switched isolator to CU

    Domestic single phase supply, TNCS, 25mm tails. From supply to Fused switched isolator : Earthing conductor is 16mm. From isolator to CU : Earthing conductor downgraded to 6mm for what ever reason I don't know. Is there something in the regs that says after an isolator the conductor can be...
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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)...
  11. D

    UK Shower isolator

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

    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...
  13. 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...
  14. 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/
  15. 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...
  16. 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...
  17. 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...
  18. 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...
  19. 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...
  20. 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...

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