isolation

isolation

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  1. R

    Is it enough to prove safe isolation on a circuit which is controlled by a PIR on a seperate circuit ?

    Hi Guys currently doing my apprenticeship and looking for some external advice regarding safe isolation. Situation is a circuit supplying some external street bollard lights and 1 or 2 street lamps. This circuit is fed via a single phase MCB then through a contactor all located in the db. The...
  2. T

    Safe isolation of rotary isolator when no incoming voltage present.

    Hi all, trying to work out the best way for proving safe isolation of a motor. Motor is fed from a contactor inside control panel, it then passes through a local isolator and then to the motor, the isolator has auxillary contacts so that when it is in the off position the contactor will not...
  3. Z

    UK Safe isolation

    Hi everyone, I hope you are all well and having a good week. I would like to ask a question regarding safe isolation in one particular case. I know we have to lock off/tag off the circuit we are working on, but what if there are two electricians attending the job? Scenario: Two qualified...
  4. N

    Isolation of TN supplies.

    I haven't seen a lot of discussion on this subject and have questions pertaining to isolation where TN earthing is present and any peculiarites which may exist between TN-S and TNC-S. I see mostly 3 pole main switches on TN earthing systems, but do see quite a few instances where all live...
  5. D

    Safe Isolation of a 16/32a socket

    Hi, after some discussion with electricians, does removing a 16A or 32A socket constitute safe isolation? I understand that removing the socket completes an isolation, but for me, additional measures should be included, either placing a lock around the plug to prevent it from being placed back...
  6. tommy2809

    Ireland Apt immersion replacement

    Hi I replaced a Flash immersion timer with an apt one today and it seemed straightforward but just wondering should the light on isolation switch not always stay on even when the immersion switch is set to off.Also when I flick the switch on the isolation to off and leave the immersion at on...
  7. nedwards9820

    electrical isolation of undersink water heater

    I have taken delivery of an undersink water heater. It is fitted with an RCD on the electrical supply cable which terminates with a euro-plug. I am planning to cut the plug off and hardwire it to a switched fused spur. There is a curious electrical isolation connection that is supposed to be...
  8. impish15

    Shower extractor fan off socket circuit

    Hi Customer has an extractor fan that’s inside the shower cubicle high up on the wall. The extractor fan has no form of isolation and is wired into the socket circuit not the lighting circuit (I have never seen this set up before) and hasn’t been fused down. So because of the way the extractor...
  9. R

    How to conduct safe isolation on this main switch ?

    Hi all, if I cannot access the line side of a crabtree 100A DP main switch. Would someone enlighten me how to conduct safe isolation on this installation. Would the main fuse need to be removed ? Thankyou.
  10. finsends

    Insulation of electrical power pole

    Hello, I have a fairly big property and to get power to the house, there are several metal poles with the cables running along them. I had multiple issues with lightning strikes and suspect that the lightning hits one of the poles and reaches the house through that route. Additionally, the...
  11. P

    Location for shower isolation switch

    This could possible have been a poll, but really just opening up for suggestions and feedback on where folks think an isolation switch for an electric shower should be located. Some obvious choices are: Pull cord inside bathroom Wall switch inside bathroom (outside of zones, obviously) Wall...
  12. wawyed

    DC Isolation between inverter and battery

    Greetings, I have a 5kwh solis hybrid inverter (S5-EH1P5K-L) with 12 (390W) JA solar panels . I was wondering if there's any requirement to install any DC isolation between the battery and the inverter or they can they just be simply connected to each other?
  13. D

    DP ISOLATION SWITCH.

    Hi all just enquired with National Grid to get a DP isolation switch fitted in my outside meter box and was quoted a jaw dropping £220.00 Is this the norm now for safe isolation?
  14. F

    Convert washing machine isolation switch into a plug?

    Hi there, I have two isolation switches above a kitchen workcounter. They currently turn off the power to a pair of unswitched sockets which are hidden in a cupboard. They were previously used for a integrated washing machine and tumble drier we had plugged in, which we removed. As the plug is...
  15. A

    Help on correct isolation switch.

    Hi I am not a electrician. I wondered if anyone can help with identifying which isolation switch is required. I have UK power networks coming January next year to install an upgrade of my electrics main cable. It will be a 95mm three phase cable. I have be told that I have to install a suitable...
  16. u2v2w2

    Isolation sliders getting stuck on 3 phase distribution board to the point of partially braking off

    Anyone else had the same issue? Since this company keeps replacing machinery very often the MCB's get changed a lot so over time the slider contacts doesn't engage properly anymore.
  17. W

    Isolation switch position for warehouse roller door

    Hi, I am not an electrician and looking for some electrical advice. We have had a new electric roller door installed at our warehouse. The door opening is 4.5m high and the motor for the door is at this height. The electrician has put 3 phase power supply and isolation switch at ground level...
  18. S

    Removing someone else's isolation

    Hi all, After some help here. My boss at the company I work for is adamant that I must remove my electrical isolation, even though I don't deem the work to be safe or complete. Long and short of it is, if I don't remove it myself, then someone else will. Is this legal? Many thanks
  19. P

    Add an isolation switch on-top of the Meter isolation switch?

    In my property I currently have one of these meters that has an isolator switch (use a flathead screwdriver to turn on/off) I would like to add a Lewden enclosure with 100A isolator switch between this and the CU. Is this overkill and/or would cause confusion? The reason I thought is that the...
  20. saint elmo

    sub 3kw oven isolation switch

    whats the way to go with a sub 3kw oven with plug supplied fitted? the stove is gas so theres a plug for that too, will be connecting to the kitchen ring main in 2.5mm T+E spur off the ring with a CCU above the worktop to unswitched double socket spur off the ring with 13amp FCU above the...

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