isolators

  1. L

    Anyone know more about these OLD BNO main isolators ?

    Ive mentioned it in another thread but thought I would make a specific post !! From a quick look its a "piston type " affair .The leaver lifts up and pulls out the rod in the middle .A bar has to be inserted to the rod that then allows the lever to roll upwards pulling etc . I'm old...
  2. M

    Wiring supply in top of Isolators RCDS and mcbs

    When shouldn't this be done ?
  3. 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...
  4. O

    New inbuilt oven circuit (25A), can I do double isolators for the hob?

    Howdy experts, I normally run 6mm T+E for cooker circuits, housing authority spec. I'm changing my gas inbuilt double oven and hob for electric/induction to pre-prep for the upcoming winter gas shortage. Has anyone done 2x45A cooker isolators on the same circuit, I ran 10mm and a 40A MCB...
  5. E

    Appalling install... Am I missing DC isolators too? Help please!

    Hi all, I hope you can help me please. I had solar system installed nearly 2 months ago and my installer turned out to be cowboy despite having all necessary certification, Which trusted trader, you name it... They were already back to take the panels off, repair the roof and install panels...
  6. T

    Isolators in meter boxes

    So the niceic guy tells me the DNOs have complained to them about equipment that isn't theirs being installed in meter boxes; I know you technically shouldn't but it's often a case of what else do you do. Waterproof enclosure on exterior will look naff and be a risk, I can't find anyone who...
  7. kenburgess

    UK Rotary isolators vs ordinary isolators?

    Why are rotary isolators used on solar and heat pump installations rather than other IP rated isolators?
  8. L

    Bath Fan Isolators : Whats good ?

    Was always using BG ones. But wants to try something else , heard Schneider are ok for the money ?
  9. N

    EICR on TT, Coding for TP isolators and SP RCBOs

    Hello, I'm after some coding advice / opinions regarding EICR of warehouses / offices. In others opinion would this be agreeable (helplines closed at weekends..) The units are TT. Where there is 4 pole 300mA S main switch to DBs, but single pole RCBOs or MCBs are utilised within them, C3...
  10. E

    RCD protection on these tails and why 2 isolators?

    Hi all I have a few questions about that video. 1. I don't understand why there are two isolators on the tails between the meter and the CU. One is fused and one isn't, so what's the point in the one that isn't? 2. Why would this 'require RCD protection' like the guy in the video says? I...
  11. Rockingit

    BMO and multiple isolators

    Hi all, been a while ;) Typical me, got a right arse of a project on the go where absolutely nothing is 'standard'. Story short, currently installing a BNO system for a BMO (try saying that in a few hours after a beer...) and have incredibly limited space to juggle umpteen SWA's, a Ryefield...
  12. EddieSparks

    400 amp 3ph, Harvey Hubbell isolators, (seized up)

    Tomorrow night, 5/12/19; I have got a job at a southern water pumping station to investigate a seized isolator. The isolator is a 400amp 3 phase Harvey Hubbell from about 1960’s. it is stuck in the closed position. We are able to remove the Handle and take the door off to game access. Has anyone...
  13. A

    Hob and oven isolators

    What's your guys recommendation on hob and oven isolators. It's still undecided what rating hob and what rating oven is being used therefore I have decided to run a 6mm radial for the hob and a 4 mm radial for the oven circuit to be hidden in a base unit. Do you guys recommend a 45amp isolator...
  14. D

    Shower isolators - Do we need them or not?

    Hi Guys, Searched the regs and internet and I cant find a definitive answer on whether they are needed to not. Found a few posts on here from a couple of years ago but there are a lot of mixed opinions. I’ve got mixed views, always installed them but I don’t think they are very nessacary...
  15. D

    Mains distribution upgrade work, 3 phase,old isolators, steel conduit & trunking providing CPC

    Hello everyone I'm picking up some remedial works from an EICR fail in a commercial property. Its a 3 phase supply with old steel conduits , trunking & coupled metal equipment, that provides the earth to the various locations. At present the earthing is insufficient, every earth in the...
  16. John Lundrigan

    plugs and unswitched socket outlets used as isolators!

    Table 53.4 shows that plugs and unswitched socket outlets can be used as devices for isolation while carrying load current!. Functional switching can also be carried out in this way as well. Is this really a safe procedure? Am I interpreting this table incorrectly. Thanks Jonel
  17. S

    For sale: Main isolators, RCD's, RCBO's, MCB's ...

    Hi all, A am selling some Main isolators, RCD's, RCBO's, MCB's and some other stuff as seen on the picture. Most of the items brand new, some have served as display but never used. PM me if interested, so I can send a list with all items. The ideal situation will be if someone wants to buy...
  18. J

    flat sub mains- isolators

    on my job i started today a different contractor has done the mains (100a 3ph head>>100a 3ph iso>>63a ryefeild>> meters>>then into a 100a isolator switch (no fuse just a 100a main switch) then I am responsible for the swa from here and then to consumer unit within the flats and the flat...
  19. T

    Isolator for more than just a fan

    Was thinking the other day about how you need to have an isolator for a extractor fan. Would anyone agree that you would also require one for say a mirror light/shaver light??
  20. rolyberkin

    Changing a TT system board - Best Practice

    Advice please I have been reading through the regs re a TT system consumer unit change and the onsite guide suggests at 2.2.6 a-c that consideration should be given to the board being either be class 2 board or class 1 with RCBO's or a split board with an S Type main RCD as isolator. The...
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