busbar

  1. S

    Busbar chamber cable sizes

    I’ve been asked to install a dedicated 32amp 3 phase supply for a passenger lift and need to tap off a 200 amp rated busbar chamber. The incoming supply to busbar is 200amp with 120mm SWA. Can I tap off this busbar with 10mm tails to a new 32amp switch fused isolator mounted to the side of the...
  2. M

    Busbar & Tap off box - power loss & Over-voltage issues

    On one of my sites, I have a 6 rising busbars ( E & I powerbar) rated at 250 A connecting a tap off box with a Schneider 100A isolator feeding a 3-phase board with 16mm SWA. I have around 24 tap off boxes onsite across 6 busbars and the installation is approximately 6 years old. Over the past...
  3. Gavin John Hyde

    Comb busbar in consumer unit

    On a job today and in a consumer unit came across a split load board with usual cables from bottom of main switch to rcds. everything had been moved along 1 creating a space for a rcbo feeding garage, Woman admitted her ex had done the garage job himself so no certs or testing. I was there...
  4. S

    Power supply to 380V pumps from 460V panel

    Dear all, We have 460V MCC panel for existing pumps in our plant. We need to give supply to new 380V rated pumps in the same panel. There is space available in the panels(Out of 9, one panel almost free). So please suggest is it possible to make the arrangement for MCC feeders in the same...
  5. HoverSPRX

    No Overload Protection on DB wired to Busbar

    Hi all, I recently carried out an EICR on a biolabs, it has a DB in the mains room that was wired direct into the busbar on 25mm tails within 3M. The busbar is on a 200A fuse and the DB in question is a 24 way three phase board. I know that 20 + years ago when this was installed some guy has...
  6. A

    Alterations to lighting on Busbar trunking

    Hi, If you have a luminaire connected to busbar trunking via a fused "plug" is this then considered as a fixed appliance? And if so, if you were to change that luminaire would that constitute an change to the circuit, i.e. Would you need to issue a MWC? I am also assuming that if the plug is...
  7. D

    Canalis Fused Tap-Off unit replacement

    Can any one advise me whether the Canalis KUO-SA 52000 Fused Tap-off unit is a single or Two-circuit module? Where can I find a replacement?
  8. E

    Rcbo On A Busbar Protected By Rcb

    Hi just looking for your opinions on putting an RCBO on as busbar protected by an RCD, the reason i ask is the manufacturer doesnt make a 45A MCB but does make a 45A RCBO. or leave the circuit on a 40A MCB even though the manufacturer of the oven asks for a 45A supply?
  9. T

    Removing Schneider/ merlin geran Circuit breakers from panel board busbar

    Hi I am replacing 2 circuit breakers in a Schneider panel board. Board is 3 phase and main switch is Schneider NSX 100. Circuit breakers are Schneider NS100N compact series. Replacing 30 amp breakers with 63 amp identical units. The breakers are single phase units. my problem is that I am having...
  10. S

    Busbar chamber

    Hi all, Have a 200amp bus bar chamber located in a maintenance shed that feeds several isolators/ DB. This is fed from a 100 amp 3phase switch fuse located at the origin located within a different building some 70-100 meters away at high-level. Does the bus bar chamber require local isolation...
  11. N

    Fault finding. Mind boggling

    I'm stumped on this one. My mate has a two way garage board in his garage. Circuit 1 is lighting, circuit 2 is 3 sockets on a radial. Lighting works fine. Sockets trip main RCD in DB when switched on. 3 sockets are now disconnected. Tried to reset 16A MCB (for radial circuit) and still trips...
  12. S

    Busbar trunking

    I need to modify a rewinder paper machine. It has 9 motors in a row that each turn a blade to cut the larger reel down to size. The motors need to be able to move approx 30cm each side, to select the size of paper to cut. They are currently on a cat track but they are falling to pieces due to...
  13. D

    Busbar cut down

    What do people use to cut down a Busbar (also not sure if doubles s or two Words) Do you use just a hacksaw
  14. E

    Aluminium Cables - Copper Busbar

    Hi All... i have a little question... We have Aluminium DC cables connecting onto Copper Busbars, but we car starting to get burning/galvanic oxidation. (the Large combiners are outside in metal cabinets so easily get moisture inside) But some of it is due to the odd poor connection (lugs...
  15. G

    For Sale SCHNEIDER ELECTRIC 200A 750mm Busbar Chamber

    I have for sale one Schneider electric 200A 750mm busbar chamber not unused was fitted to the wall and that's it no extra holes drilled £150.00 plus postage or you can come and collect it is very heavy SCHNEIDER ELECTRIC SCHNEIDER ELECTRIC
  16. carl9254

    MEM RCBO's

    Hello, Had a price of £80 for a new MEM rcbo from edmunsons. Anyone know of anywhere cheaper to get them or an alternative that will fit? Just after about 10 B32's for a domestic board. Thanks
  17. G

    Busbar or Conventional Cable System

    Hi, Our production line was recently destroyed by fire but hopefully we'll get going soon. The production line was pretty mush in a straight line and was powered by cables connected back to DB - about 10 drops in total. This time I am considering installing a busbar type system, like the...
  18. P

    busbar help

    Hi im just after a bit of advice just in case im missing anything not had a lot to do with busbars. Basically iv got a 100a 3 phase supply 25mm tails it gose to a 60a isolator with rewirable fuses which is next to the meter. Then to a 100a busbar feeding 3 isolators which is next to the...
  19. G

    Eicr remedials

    Main switch 160a bs88fuses, 35mm tails feeding busbar chamber with switch fuses ontop feeding distribution boards. A c2 has been given to undersized main tails. I thought that because the tails are only about 400mm long from switch into busbar that it was ok? Thoughts?
  20. Sparky_Steve

    red tab in crabtree starbreaker busbar

    I have a metal clad crabtree starbreaker board which i'm planning on using rcbos with how do you remove the red tab?

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