isolator

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  1. GarethB

    UK Datasheet for Chint NHB2-100UK Supply Isolator

    Hi all, working at a house where a British Gas have installed a Chint iso off their meter. The isolator is a Chint NHB2-100UK 100a unit but Google and Chint’s own website are unable to bring back a spec sheet for the switch (photo attached). Does anyone know what torque the terminals need...
  2. A

    DC isolators required between inverter and array

    Hi, would anyone know if a single dc isolator (local to the inverter) is sufficient or would an additional dc isolator be required at the panels. The situation is an installation which has the dc cables from the panels routed through the property and clipped (8-10m run). All labels including...
  3. L

    Do i need to install a DC isolator if theres already one provided on the hybrid inverter?

    Hi, I have nearly finished installing my first solar system for my brother in law. havent installed a DC isolator on the string lines (none in stock locally and didnt order ahead). The sofar inverter he bought has a rotary isolator fitted already. Can I label that isolator and be compliant...
  4. H

    Isolator for ryefield board.

    Hello, I’m about to take on a mains room for a block of flats and the DNO are giving us a supply of 259kva. Now, would I need a 200amp TP-N isolator or a 400amp TP-N isolator from the main head to the ryefield board? I am also assuming I will require a CT chamber. This is my first project of...
  5. Raptor0014

    Electric Meter Switch Isolator wiring orientation

    Having a discussion the other day with a kitchen fitter who “also does electrics” and he is adamant that a NIC contractor told him that a meter isolation switch has to have the supply go in the bottom and the load out the top, same as a MCB. This convo came about as he said the property we were...
  6. M-B-Electrical-Services

    Correct process for meter tails upgrade and isolator install

    Hi guys, I hope you're all doing ok in this heat!! I have recently carried out an EICR on a domestic property where it failed miserably. The consumer unit is an old MEM metalclad built in the 70's and requires replacement. The meter tails both on the supplier's side and consumer's side are...
  7. LewisM

    GEWiSS Isolator help...

    Hi, I'm currently testing a factory and having difficulty removing an isolator cover to test a circuit. Usually, it's just a case of switching off and removing screws however the cover doesn't seem to want to come off as if the mechanism is stuck but it definitely is working as you get a real...
  8. J

    325A MEM stuck Isolator

    Hi Did some small works recently on a farm building, and the origin of the suppky is via the TPN isolator in the video. But it wont budge. Any advice please? I am extending the lever all the way out and then pulling down. I did not want to force it in case i broke sonething. It is the feed...
  9. M-B-Electrical-Services

    Odd cooker isolator position

    Hi all. Just finished a domestic EICR where I found the cooker isolator to be smack bang in the middle of the actual cooker position. The oven had a glass lid which, when lowered, automatically isolated the supply to the hobs. I have noted it down as C3 due to the existing cooker lid covering...
  10. L

    Which DP 100amp isolator is good

    Anything better than these ?? https://www.NoLinkingToThis/p/wylex-100a-dp-isolator-with-enclosure/321FR?tc=TT3&ds_kid=92700055281954493&ds_rl=1249401&gclid=Cj0KCQjw37iTBhCWARIsACBt1IzKLrO9guBmyJpLxiNL7yl8XeNfdpz6YkfyWUpRQdvOtIKOG_ybKrMaApKgEALw_wcB&gclsrc=aw.ds
  11. The apprentice

    TPN Isolator testing

    Hi there thanks in advance for the help iam still learning but soon to sit my trade test, on the booth picture number four is a TPN isolator I have to chose the correct fuses but on the testing this piece of equipment R1 R2 3 phases to earth record highest reading at end point I don’t need to...
  12. H

    Multiple circuits passing through an AC isolator

    Multiple circuits passing through an AC isolator what code is this on a U.K E.I.C.R?
  13. W

    Outdoor 32 amp isolator with Aux contact block

    Hello, I am looking for some recommendations for external motor isolators with Aux contact block. Ideally large enough to gland 3 cables at the bottom, most likely 3x M20. possibly 2x M25 1x M20 for a few. I have taken over maintenance on a site and most isolators are unserviceable and will need...
  14. Raptor0014

    Advice regarding isolator for 3ph TT system

    Morning all, I’m scratching my head with this and granted I don’t do a lot of commercial work. Hence I thought I’d ask. Setup is a pub with a 3ph supply and it’s TT So it goes Incoming head - 3 x 100a cutout Meter 3 pole isolator for L1, L2 & L3 L1 to single phase into plastic DB L2 to...
  15. A

    Isolator vs Transfer Switch for generator (or both)

    This is an elaboration of a previous question. It is my intention to have a smart meter installed and an isolation switch at the same time. Just waiting on a date. However, given three days of storm power cuts I am now also thinking of adding a transfer switch so that my 8Kw petrol...
  16. E

    Rotary Isolator with enough space

    Hi i have a hot tub job coming up and will need a rotary isolator. I need to bring two 6mm swa's (single phase) into its base and will use pirahhna earth nuts. I know these isolators dont have much room inside em, the larger 63a units (at least the ones I can find) have 25mm knockouts so no...
  17. G

    Meter Isolator with SPD

    Hi We are looking to get an EV charger installed, and I asked for an SPD to be on the new CU that will be required for that. The electrician has suggested that instead of having an SPD in the new CU, could replace the incoming isolator in the meter cupboard with one that has an SPD incorporated...
  18. D

    3 phase isolator switch

    can I use the above isolator switch with single phase 240V wiring. live neutral and earth? its the right designed switch for me and also it is the right current rating.
  19. S

    Switched fuse isolator

    I have got to install a switched fuse isolator with 25mm tails and a 3 core 25mm armoured. Any recommendations on an isolator? Always struggle with isolators twisting and generally just not enough room.
  20. S

    Zone 2 lights and fan isolator switch

    Hi .can someone let me know if I can install a battery operated smoke alarm and also.carbon monoxide alarm.for a rental accomodation ? Would this be satisfactory ( pass a EICR ) Secondly if i have fan isolators on zone 2 in a bathroom and ensuite so they need to be waterproof Also if the...

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