protective | Page 6

protective

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  1. G

    regs for Maximum supply cable lenght between the main supply and a protective device

    Is anyone aware of any UK regs that describe the maximum length of a supply cable between the main supply and a protective device such as an RCD in an industrial installation? I ask this because I have come across what I am sure is a dangerous installation at work but need the regs to back me...
  2. A

    Protective bonding conductors in a flat?

    I've just been to a flat tonight to look at some potential work, but there is no bonding conductor to the incoming water pipe inside the flat. I had a quick look in the main distribution board cupboard of the flats, but could see no evidence of bonding to the water, and the main water incomer to...
  3. DaveyD

    Protective bonding to Gas. 600mm on entry (if practible) and before branches.

    Hi Guys Ok so I have this little rewire on and have to put main protective bonding to services. On the gas, it has been fitted in an external gas box in a shared part-covered passage (:D). I could bond in the box on customers side no problem. The pipe reduces down and is about 5m to point of...
  4. M

    Extending Main Protective Bonding Cable (CU Change)

    Hi all, Silly question probably so please be gentle. I am shortly going to be carrying out a CU change. I am happy with extending circuits with crimps and heatshrink etc. However the customer has asked if it would be possible to lower the CU to a more suitable height (the existing one is butt...
  5. G

    how many cables in one protective device is mechanically unsound????

    Hi guys just wondering about the issue mentioned in title. I work for a firm who have a testing side and because of my 2391 i get pulled off on testing quite often. my company seem to think that if there are 3 or more cables in one breaker that this is classed as a code 2 which can fail the...
  6. J

    Radial socket circuit - duplicate protective conductors

    On a radial circuit, do all sockets require duplicate protective conductors back to the cu.
  7. L

    3 line conductors in same protective device

    Is there any reg or scenario where it is acceptable to have 3 line conductors in the same 32A 60898 protective conductor ? Still ascertaining wheter two of which are a ring final but if they are is there some way that is allowed ? A RFC and a another Fused spur circuit in the same protective...
  8. Les Macaulay

    30 metre run of Main Protective Bonding Conductor to Gas Main and Water Main

    Hi Fellow Sparks. I have to install a 30 metre run of Main Protective Bonding Conductor to Gas Main and Water Main in a commercial building. Is it permissible under the IEE Regs to clip a single 10 sq.mm PVC cable directly to the building surface for this, or should it be enclosed? Also...
  9. M

    Main Protective Bonding conductor around an external wall.

    Is it OK to run a Main Protective Bonding conductor around an external wall in black conduit? Secondly are there any suggestions as to what you can sleeve this through a cavity wall other than 15mm conduit, - anything smaller.
  10. S

    Use of SWA armour as protective bonding conductor?

    Hi folks, attempting to fix a screw up by previous installer. TN-C-S domestic property with garage outbuilding. MET is in consumer unit in main house; garage distribution circuit protected by RCBO. Garage sub board populated with MCBs. Cable to garage is 6mm2 SWA 3 core. Garage has extraneous...
  11. I

    Old 6MM Grey sheath black and red protective insulation etc

    Plesae could some one give me the values of the CPC for Greay with black and red sleeving as i am doing an install and especialy the 6mm is definately not the same as Brown & Blue Any help welcome thanks Ian.
  12. Goody

    Choosing an overcurrent protective device.

    Where an overcurrent protective device is used the following condition shall be fulfilled: Zs x Ia < or = Uo Ia is the current in amperes (A) causing the automatic operation of the disconnecting device… Can I assume Ia is the “PFC”? Thanks
  13. D

    PME protective conductor sizing?

    Need a little advice on this one. I rewired a house last year, all sorted and signed off, but I was told I would be coming back as there was a new extension planned. Unfortunately the building contractor would only use their own electrician so I lost the extension work, no worries. The customer...
  14. W

    installing main protective bonding

    hi,just a quick question,i have to install bonding to gas and water .the property is an old house with a passage way with consumer unit in passage way.i was looking at running the 10mm cable down the passage,on the outside wall and into the kitchen.Is there any issue with fixing cable on outside...
  15. L

    Surge Protective Devices - Amendment One BS 7671!

    YouTube - ‪An Introduction to Surge Protection Video‬&rlm; - here is a sample of a great video produced by learninglounge.com and pheonix contact. I would highly recommend the online version as they have so much more video content to offder and the price is much cheaper than buying all the dvds :)
  16. S

    minor works cert help

    hi there i am filling in a minor works cert and in part 2 it asks for 'overcurrent protective device for the modified circuit' and 'residual current device'. i have a split load board with one rcd on it. the work has been carried out on a ring circuit on the rcd side so i assume i put in the rcd...
  17. Luminous

    Main protective bonding

    Just changing a CCU and the existing bonding to the services is in 6mm. I can get to the gas incoming very easily to change to 10mm but there is no way I can get to the water incoming service (middle terrace, stone floors, just decorated) without a load of trunking or up and over the house. Even...
  18. R

    Where to put main protective bonding conductor if no water mains isolation in house

    Hi all New to the site ! It ! brilliant. Its a real result to find such a community forum. great subjects and discussions, already been so helpful... Thanks So got this question. In house and to turn the water mains of its only from street. No mains isolation in house. so where would I...
  19. G

    Main protective bonding and supplementary bonding, help please!

    Have a query regarding bonding for periodic. 1, Main protective bond for gas supply goes to the supply box outside the house, is this ok as would be difficult to connect it in the house close to the supply as it goes under the floor. If it is a problem what code ? 2, supplementary bonding...
  20. T

    Assessment tomorrow

    Hi All, Got me assessment tomorrow and currently filling the PV commissioning test from. Could someone confirm the "Protective Device" is the DC isolator, and the details requested are its specification? (eg dc rating = the rating of the switch which is 450V) While I'm on the subject, any...

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