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incomer

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  1. O

    Types of installation

    Does anybody out there recognise this type of installation. I have never come across anything like it before. I was doing some work on a flat yesterday that had a few problems. The incoming water pipe was not bonded and the earthing cable on the gas pipe was not attached. The installer had...
  2. Jay Sparks

    Old cast iron incomer

    Hi, I am gonna fit a new ccu in my cousins house, so I went round there to do the useual pre tests before I started. Noticed the incomer was a tn-s in a cast iron box. The seals were missing, so I took a look inside and there was a 100A fuse bolted at both ends in the line conductor. Now I...
  3. C

    Adding a RCD incomer to a cartridge fuse board?

    Hello guys this is my first post as I'm only recently qualified (but doing the job for 4 years) . But my question is as my title suggests. Is it acceptable to add 80A 30mA incoming RCD before a cartridge fuse board but the wiring is still in compliance (pvc/pvc, csa's etc). They don't want to...
  4. G

    new washing machine trips 3 phase rcd incomer

    Hi Chaps, Got called to an interesting one today, customer has bought a new miele washing machine for a farm building. It is a straight swap for an older machine, trouble is during its cycle it trips the 3 phase rcd 30ma incomer. The socket it is connected to is fed from a single phase breaker...
  5. P

    Additions or alterations re bs951 clamp used to supply earth on incomer

    Hi All, Just quickly what are your views on this?
  6. C

    Is this 2 phase incomer?

    Is this a 2 phase supply in this picture? The two 25mm tails connect into a 3 phase switch fuse unit into just 2 of the fuses. SWA is run from this unit to a seperate building housing a water heater for an outdoor swimming pool. The heater is on a 3 pole circuit breaker with the swa connected to...
  7. applemac

    rcd incomer

    hi guys i need some help.. my board at home has a 80amp 30ma rcd incomer without a incomer dp switch. about 10 used circuits ans about 4 spare. i get some tripping problems so i want to change the rcd as its hard to reset sometimes and crap quality q- can i use any brand rcd or do i have to...
  8. D

    mcb as incomer

    is it ok to use a DP mcb rated to bs60898 or en60947-2 as an incomer on a 110v dist board or would i need an additional isolating switch thanks
  9. P

    Incomer upgrade on PME

    Will be starting a job soon after my assessment which will involve a two storey extension and an office area, also attached garage needing basic power. Went to look today and discuss requirements. The incomer is PME with a combined lead from service head to meter, this looks like it may be 6...
  10. J

    runniing single core tails in trunking

    hi all just reading through and i have come across a post. it was about running single core 16mm tails to 5X CUs only 2way 5 sockets and 1 lighting point per CU. as if one trips it wont take the other 4 rooms out with it. i know you have to put an isloator on any tails lengh over 3m but...
  11. C

    How deep for main incomer?

    Evening all.. A friend of a friend has had a very lucky escape. Whilst attempting to put up a new fence, he smashed a fence post straight through his main incomer apparently. He says it was no more than 200mm in the ground, and to add insult to a very near serious injury or worse, they have...
  12. A

    CU Change - No main earthing on water main. Polypipe incomer

    Hi, Have completed consumer unit change. However there is no main bonding on incoming water and doesnt look like there ever has been. Have managed to locate incoming water supply and it is 20mm polypipe, the rest of the house is mainly run in copper. Im assuming it is my responsibility to get an...
  13. D

    Identification of incomer

    Hi guys Now i'd be down for ramming a rod in the ground and calling it a TT unless anyone could advise differently not come across these before :)
  14. S

    Fluctuating voltage!

    Hi I hope this makes sense. Went to look at a job a few days ago, did a quick test on the incomer of a 3 phase supply TNC-S system (seperate from the main consumer board) got a Ze of 0.19, all good, went to test the seperate consumer board & got a Ze of 0.33 & a Zs at a few RCBO protected...
  15. B

    Mains incomer grouping factor!

    Hi guys, I am designng at route for 5 flats & Landlords mains power supply! The property is 3 storys heigh and two incomers go off on each floor. Just wondered the distances I need to keep the cables apart going up the building. I have found in some literature from our mains power distributor...
  16. S

    Main Incomer problem legal ?

    Hi guys New to site, need a problem solved. Had a call a few months ago to a large house. Lady wanted to install a electric kiln in her garage. Details were full load 51 amps, with a 60 amp fuse. I looked at incoming supply head and it was 100amps. Done a load test with all appliances on etc...
  17. L

    Help fuse wire

    Old main incomming fuse, pot with 100a fuse wire, what is it as far as a EIC is concerned? bs??
  18. F

    incomer earth

    looked at a job the other day (db change) there was no earth from the incoming supply no visable earth rod,only an earth block supplying the db with a 2.5 going to somewhere under the floor boards i suspect to the mains water/gas(boxed away somewhere will find later). the owner ( inherited...
  19. C

    RCBO tripping

    Hi folks, my first post. Been just lurking in the background for a while so time I joined in. Had a callout today as lady had no power. Usual isolation identified kitchen ring protected by 32A RCBO. There was an incomer RCD as well (TT installation) that would also get taken out when the RCBO...

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