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isolating

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  1. M

    Isolating power to mutpil CU for Ze

    I've just looked at a job in a residential home where I need to replace a sfcu. The circuit is on a old cu and I've noticed that the main earthing is in 6mm and has thermal damage, I've quoted to also upgrade this. My question is the cu is on a SP TN-S and has 3 cu coming direct off the supply...
  2. Y

    Isolating of Fire Panel.

    Hi all, our NIC inspector came round recently, and one of the changes we had to make was to the way we 'control' fire panels. Previously we have just fed the panel from an unswitched fused spur. However according to the NICIEC man this is no longer acceptable, so what we have to do is fit a...
  3. T

    transformer for isolating welding plant ?

    I need to protect a digital welding inverter from voltage spikes when powered from a generator, iv'e been told running it through a transformer will do this, however the welder is 240v and the only transformers i can get at a sensible cost are 240 in, and 110 out site transformers, i could get...
  4. N

    Regs on isolating a DB and earthing conductor size

    Just wanted to double check two regs. 1. Do you HAVE TO have a double pole switch between the cut out and the DB (so you can isolate the DB) 2. Do you HAVE TO have a 16mm earthing conductor alongside the 16mm tails (the load on the installation is no more than 5 amps ((teleco cabinet Virgin...
  5. R

    Isolating transformer to deal with inrush currents?

    I have a problem at a remote site in Africa where we are running a couple of prime power generator sets (FG Wilson 220/380, 50 Hz (1500 rpm) 450 kVA (409 kVA prime power) single set operation, no synchronization, controlled by a transfer switch. The alternator is connected star, and earth...
  6. O

    Isolating PV - tin hat on

    OK, I don't touch PV at all, and the closest I get is to it, is to switch off the isolator when working on CU's. Got a job on where the PV isolator is close to the board. The "supply"cable to the isolator has been wrapped around the radiator pipes and as the kitchen has been pulled apart it...
  7. E

    40v on circuit after isolating at the RCBO.

    Hi, Hopefully someone can help me with the following:- Having recently carried out a Inspection on a installation I came across the following problem- After isolating a ring main at the RCBO, I still have approx 40v at the socket outlets. There is another ring main, where after isolating...
  8. Z

    Electric cooker isolating switch location question

    Hi guys, I've had a new kitchen built, and have had new ring and cooker points fitted by an Elecsa registered electrician. The cooker and hob isolating switches have been installed on the wall about 12" from floor height, and intended to be accessable by opening a drawer in the new kitchen, and...
  9. F

    Isolating for Insulation Resistance

    Hi all, is it sufficient to turn off the switch to the boiler when doing an IR test? I thought only double pole switches would isolate both phase and neutral and a boiler ran off a fused spur isn't double pole? Dimmer switches you disconnect and join phase and neutral, do you do this at the...
  10. S

    Isolating Part of a ring main

    Hi everyone, Still on a learning curve so I have another question for you all. (actually, always on a learning curve) A friend is having some damp proofing done on his house and needs to cut away the plaster etc around 2 sockets on a ring main in a room. He needs to isolate them so the work...
  11. C

    Soladin 600 - Does it have an Isolating Transformer?

    Hi All, I've looked in the destruction manual for Soladin 600 and there doesn't seem to be any mention of an isolating transformer. I've got my MCS assessment on thursday. I've already bonded my array back to M.E.T. in case it isn't an isolating transformer but it would be nice to know for...
  12. O

    Bathroom fan isolating switch

    Re-entered this question on it's own Thread. (Hope this meets with moderator approval) :) Does the regs state that the 3 pole isolating switch (required to protect the person carrying out maintenance on bathroom fan) must be accessible in the room that the fan is fitted? (Perhaps "In line of...
  13. S

    isolating a tt supply to move a ccu

    Hi everyone, just wonderd roughly how much the electricity board would charge to move there meter and tails from one room to another? The property has a tt supply and theres no means of isolating the incoming. Suggestions please?
  14. B

    shaver socket

    hi, in part p, it says there is no socket outlet within 3m of a bath, however shaver socket is an exception,why is this, what the main difference of the shaver socket? sorry for this silly question. cheers
  15. L

    does a bathroom mirror need isolating ?

    Its an 240v LED one Thanks

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