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  1. O

    Whats the diference between MK K5563s and K5561s?

    Wondering if anyone knows if the cable lengths of the K5563s Split load kit and the K5561s stacked CU cable kit are the same or vastly different? (screwfix don't stock the stacking kit, Yessss locally are useless and paying postage isn't something I want to do if possible ;) )
  2. Rockingit

    Mitsubishi Ecodan fault code

    Have a M-Ecodan ASHP system installed by a firm that's now parted company from the builders, so no warranty backup, and the ball's landed in my court to pick up the mess (six installs, btw). I've just done a callout to a non-working system which is flashing up an E9 code both at the tank end...
  3. E

    Continuity between live and neutral at cut out

    Hi - newbie here so firstly apologies if this is not in the correct place or if its a stupid question.... Following safe isolation procedure on a C/U today - on an old re-wireable board, with all fuses removed....checking that no voltage was present using a Fluke T90 I was getting a continuity...
  4. F

    Lighting circuit - Earth issue

    Hi guys, I was just replacing my light switches in my new flat (like for like, just a different look) when I came across a issue with the living room one. I had just swapped the kitchen one, switched power on to test it. Before I touched it with my hand I put my my screw driver on the metal...
  5. K

    10 metres between the meter and the CU?

    I'm looking at a situation where the overhead supply arrives at one corner of the house and the meter/cu are in the exact opposite corner. Because of the location that can't be changed, Western Power have confirmed. So at the moment there are two cables that run all round two walls of the...
  6. S

    Voltage between earth and switched line terminal on one way light switch

    After installing some LED fittings in a bathroom and disabling an electric shower circuit I carried out a check on the whole installation. All fine until I used my Di-LOG probe to probe the switch plate screws to check that I had not pinched any live wires in the light switch back boxes around...
  7. M

    diffrance between the red and green 17th edition books

    hello. im about to buy a 17th edition book i see 2 of them going kinda cheap but whats the between the red and green 17th edition books are they the same or different all together
  8. B

    3kw Immersion blowing sfcu 13a fuse about once a month...any ideas?

    On dedicated 16amp mcb Wired in 2.5t&e to sfcu (13a fuse) then 2.5mm heat resistant flex. Fuse has popped twice in last 8 weeks etc. Element R 18ohms. all seems ok? Should I just swap sfcu for 20amp double pole switch? haven't clamped to measure the draw yet as didn't have it with me. Cheers
  9. L

    EICR Supplementary bonding Question

    Hi all new to this forum but had a question regarding an EICR I have underway at the moment. It has so far failed miserably 50 C3's and about 10 C2's on day one of four. My main query is this it has metallic conduit fixed via self tappers into metallic walls and ceilings split into...
  10. J

    Difference between a Building and Household Electrician?

    Hi, I passed my 236 P1&2 many years ago and I only ever worked on buildings, so no twin & earth for me. Can anyone tell me if I would need to take any extra exams to do household work? Many Thanks Jason
  11. G

    Dead short between 3 conductors

    What reasons can anyone think of why a circuit would have a dead short across all 3 conductors ? so far I'm thinking - water damage - possible rodent / pest damage any more ?
  12. J

    230v between L-E, 0v between L-N

    230v between L-E, 0v between L-N Lighting circuit, 8 lights. Two lights working on the circuit and six not. The two working look like the first two going clockwise from the CCU. Is this likely to be a loose neutral somewhere? Or more likely that the switch live has been switched with the...
  13. A

    Earth to live resistance tripping rcd

    Hi I have a circuit to a septic tank sump pump, which is tripping the main RCD 30ma The only fault I can find is a 12K resistance between live and earth, I presume this is more that enough to trip the RCD, but was wondering at what resistance does the rcd trip with this kind of fault? Or is...
  14. S

    Isolator between meter and consumer unit

    Hi . I am new to this site. Can somebody give me advice to the following: What type of Isolator / switch is required to put between meter and consumer unit ( reason: upgrading consumer unit: crabtree star breaker 13 - way , new bus bar system) Thanks
  15. W

    Puzzle over a lighting circuit with no CLC

    Wonder if anyone can help my poor brain on this one... Situation..domestic, house, 1955, full of every single elec DIY nightmares courtesy of owners in the 90s. Lighting circuits have no cpc, but in doing a DIY attic conversion at some point, previous owners put pretty metal lights up and a...
  16. J

    Insulation test between 2 different circuits

    Hi scratching my head alittle today as of why when I test between two different circuit I was getting 55 meg ohms on L and N and 1700ohm on E. It is a horse stables and I can see one cable goto the the right hand side stables and the other stays in the left side stables, I thought it might...
  17. C

    110v transformer problem

    Was called to look at a 3phase 400/110v 10KVA transformer on a building site. The workers had been complaining their power tools ran slow. Found 230v on all 3 phases and 400v between all phases. Transformer output was 55v between phases. Healthy transformer on floor above, (which was on same...
  18. R

    EICR and Supplementary Bonding.

    I have noticed recently on the forums various opinions on what does and doesn't warrant observation regarding bathroom bonding to previous 16th regulations, Would be interested to gather opinion on the following scenario..... 2 Bed 6th floor flat wired in PVC singles through in-situ pvc conduit...
  19. N

    Between A Rock And A Hard Place

    Okie peeps, this is my situation: I'm 28 years old, have my Level 3 2330 City & Guilds Certificate which I worked three years, part time at college to obtain. I tried to find myself work in the industry, but nobody would take me on as a trainee. I began work as an Alarm Engineer, and in the...
  20. J

    Confusion between RECC and MCS regarding sub contracting?

    Simple question, can an MCS company use non-MCS subbies and I get two different responses: Any views on the forum about this? From MCS via email: "Thank you for your enquiry. If a MCS certified company contracts another company ("Company B") to install the electronics, the company ("Company...

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