Recent content by tank

  1. tank

    Frequency without voltage

    Could anyone shed some light on what might be going on here, before I cut a trap in the laminate to find out. I have a dead socket on the end of a 2.5mm cable of unknown origin. L-E L-N N-E all 0 volts. Insulation resistance between the ends all 1000M Ohm. No continuity any conductor back...
  2. tank

    Tie wrapping RCBO neutrals.

    Ball ache if you've come to work without your snips. ? I have the ferrules to fit too. I like things to be neat.
  3. tank

    Tie wrapping RCBO neutrals.

    Ah yes I see. your point. The RCBO total is 244A on 100A supply.
  4. tank

    Tie wrapping RCBO neutrals.

    Hi guys, if 16 RCBO neutrals are tie wrapped together for neatness, are there any thermal considerations such as grouping factors to be taken into account?
  5. tank

    Main breaker trip

    A kitchen fitter did something which took out the breaker in the plantroom but not any mcbs on the consumer unit in the apartment. I insulation resistance tested the submain and it was fine.
  6. tank

    Main breaker trip

    Hi guys, why might a fault on a final circuit in an apartment trip the dp c63 submain circuit breaker in the plantroom but not any mcbs on the consumer unit in the apartment?
  7. tank

    UK Continuity Relay

    I have no problem with being taught how to suck eggs. If I need to be told, I'm grateful that someone is willing to tell me. I am getting a little deja vu on your point about insurance and legal issues. Last year, I was warned off making a basic smoke vent controller by a fire officer after I...
  8. tank

    UK Continuity Relay

    Thanks for the reply. You have given me much needed information. The float switch contraptions have been custom made and are fitted into the RC floors of the plant rooms of each level of an apartment block. ( The horse bolted after an almighty flood ). They have two flying leads for the switch...
  9. tank

    UK Continuity Relay

    Hi, the application is of a flood sensing float switch which would in turn operate a 24v motorised valve cut off valve for the mains water. The level relay you mentioning sounds promising. Do you think it would work for this application?
  10. tank

    UK Continuity Relay

    Hi guys, I want to switch a 24 v load on using just the continuity of NO voltage free loop. Does anyone know of a relay or device or method that I could use to do this? thanks
  11. tank

    ZS Fail RCBO Coding Question

    thanks for the reply. i don't know why C types specifically were used. there is no documentation available, however the circuits are for general use socket outlets, no fixed loads, motors or IT suites. i believe the Zs values are accurate and are the result of long circuits rather than...
  12. tank

    ZS Fail RCBO Coding Question

    Hi all, i'm doing an eicr on a school and am live testing ZS for ring final circuits. The supply is TNCS. i have two results and three questions if i may. i'm getting c32 rcbo ZS 0.64 ohms. ( Max ZS allowed 0.55 ohms ) Should this be coded a C3 because although ZS fail, the rcd will catch...
  13. tank

    Multiple circuits in breaker approach

    Yes, the amount of time I was allocated for the job certainly influenced my decision. To clarify, it was on to the next circuit that I moved after the FI.
  14. tank

    Multiple circuits in breaker approach

    Doing an eicr on a landlord board, in a small 1940s block of bedsits, found a type 2, 30amp socket ring breaker with 5 x 2.5mm cables in it. I assume that 2 of the wires came from an empty adjacent 30 amp heater ring breaker that had been damaged (screwdriver busbar metal board bang) and the 5th...
  15. tank

    Oven and hob again

    PROUD TO BE A MENTOR IN THE TRAINEE SECTION. there are some mentors a trainee can do without. you know what happens when you ridicule someone for asking a question? they stop asking questions. not me though. i'm too old to give a ****.

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