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  1. S

    External Wall Insulation

    Some of our customers' properties need this and I've had an interest in it for a few years although not much time to follow it up since Green Deal. I've currently got 3 customers who would really benefit from EWI so I've been looking for prices with the face saving new 6k grants. Cheapest I...
  2. E

    External 3 phase sockets (pme supply)

    I have been asked to wire in 4x 16a 3p+N+e rcd protected sockets (rcd's fitted within each socket), to be externally mounted in a car park to connect in refrigerated vans overnight, to be used by competent operatives. My main question is the earthing arrangement. I'm sure I should run the...
  3. D

    sockets on external wall

    Hi everyone. Can a domestic socket be located in for example a bedroom on the external wall. My father was a spark back in the 60's and 70's and taught me his trade and I can distinctly remember him saying you never put a socket on the external wall. Now I'm planning a rewire of my house on...
  4. J

    Adding an external rcd to bs 3036 board

    Hi All, My sister is having a new kitchen fitted soon and presently has an old wylex bs 3036 board with semi-enclosed re-wirable fuses. I know that the builders/kitchen fitters will probably take the ring circuit from one of the 3036 fuses for the kitchen and the run it to an external RCD (ive...
  5. A

    Calculating external R1 & R2

    Is there any way of calculating the r2 and r1 values of Ze for touch voltage calculations many thanks
  6. D

    External lighting wiring

    I have external lights switched through a contactor. I need to put in an override switch and they need come on via a photocell and be switched off by a time clock. how do I wire it? - - - Updated - - - The override is to override the lights on by the way
  7. T

    external led lighting

    hi guys, first post so be kind :) i have the job of illuminating a large building that is 6 floors from the outside. at present there are flood lights being used to light up the signage but it doesn't illuminate all the way to the top of the sign as they are vertical (and possibly not angled...
  8. I

    fixing heavy external light fittings to false celing

    screw self tapaers into frame than chain? or with out
  9. S

    Ze external earth loop impedance

    Hi I've done a Ze test on a TNS system and it's come back as 0.14 ohms is this reading ok as the max is 0.8 is there not a min amount you can have thanks
  10. polo1

    External lighting - am I missing something?

    Situation - local rugby club. Clubhouse has 18 external bulkhead (Phillips) fittings each using 1 G23, 11w lamp; split into two circuits each on 6amp B type mcbs. Both circuits operate via a contactor & photocell. Problem - one circuit mcb keeps tripping, holds for three/four evenings...
  11. B

    external temporary lighting

    looking at putting out some external Christmas lighting. I have bought 2 rcd plugs, 2 twinsockets with weatherproof housing boxes. I know its a silly question but as I say its temporary lighting and im trying to be as safe as possible and its been a good few years since I was last at school thus...
  12. 1Justin

    External PMR to horticulture, - back-up earth electrode or not?

    I have been asked to do some maintenance for a small co-operative horticulture set-up. They operate on a shoe-string, and have a couple of hectares of land in a low-lying flat area. The DNO has given them a PMR system with a service head and meter in nearby woodland. (Ze 0.23). I find a 30mA...
  13. P

    External Meter tails Help

    Hi Guys went to look at a friends house he has just bought, at some point the CU has been moved from just behind DNO board to 6 meters away using 10mm T&E as a temp feed loose cliped inside. The Outside cabinet has the meter head in with 25mm tails going to an isolater switch and the temp feed...
  14. G

    External earth fault loop impedance Ze

    ​Can any one explains what are the three methods to find External earth fault loop impedance Ze please?
  15. L

    external earthing

    Hi, Try and keep this short as possible. Now referring to tncs my understanding is suppliers don't like the earthing to be exported externally in case of the loss of earth. So its to be treated externally as a TT system, all well and good. My question is would it not be better to use the...
  16. 3

    mounting a new 3 phase supply external cabinets and fire switch

    This is my first post take it easy on me:charming: I am building a single story timber frame workshop. its going to be timber clad also. The local supplier is western power. I had a quote from them and although the workshop is literally a few hand tools and offices they insist on putting in a 3...
  17. T

    External sounder replacement.

    Hi all. I'm new to your most informative site, although have browsed for a few weeks as the topics discussed are quite interesting to me. Now here comes the rub. I have replaced an external sounder, a Honeywell AG6 in place of I don't know what as it was so beat up and making all sorts of weird...
  18. D

    Fuseboard in external meter cupboard

    I was doing a job for a landlord at his tenants house and was aked to have a look at the fuseboard whilst im there to as he wants it changing. Asked the tenant where the board was and he said it was in the external meter cupboard. I thought he was a bit mistaken by what i meant but it actually...
  19. cliffed

    External lights

    got a call from the boss yesterday bout 1.00,just relaxing having a break, he phones,a fault at a hotel,can u sort it.So drove for 90 mins & arrived at a big hotel,greeted by a panic manager,car park lights keep tripping a 20 mcb.This was about 3.30pm,a wedding was taking place & a wedding &...
  20. B

    External electrical inspectors requests

    Hi all, I'm a spark working for a London firm and one of our clients has recently had an independent inspector in to view our work and our certification. We only really ever instal 1 circuit back to an existing CCU and maybe extend another The thing I wanted to know, and it's a point of...

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