between

  1. D

    neutral earth fault

    During my zs tests on the ring circuit the rcbo trips. The breaker also trips when I take a Zs on the cooker. I have carried an insulation resistance test on the cables and have found a dead short (0.00) Mohm reading on the neutral and earth on the ring circuit. 137 between line and earth and 87...
  2. S

    looking for exact difference between 1652 and 1652b

    hi all as above im looking for the exact functional difference between these two testers as im looking at getting a 1652 thanks in advance rich
  3. H

    What's the difference between all of these units...

    1) Power Unit 2) Super Set Back Amplifier 3) Super Set Distribution Amplifier 4) Set Power Unit I don't know what one I should get to replace my old box which says it's a Power Supply Unit.
  4. R

    MK 100A Switches

    Got this email today so thought I'd let everyone know incase anyone has fitted one recently Dear Customer, We have identified an issue with the manufacture of a limited number of MK Sentry 100A Switch Disconnectors that could fail and overheat, presenting a potential fire risk. We became...
  5. E

    Anyone heard about recall on mk 100 amp main switch?

    Evening all, has anyone recieved email from Screwfix?
  6. G

    rcd low insulation resistance

    do rcds give low readings when testing insulation resistance
  7. B

    supply of isolator between meter and CU

    Hi all, hope you all had a good Easter. I recently requested to a customer that they request an isolator to be installed by their meter supplier (EDF). He contacted them and they have refused to supply and fit an isolator but have agreed for an "engineer" to visit to pull the cut-out while an...

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