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  1. J

    Zs values and 50v

    Hi all I’m doing some work on my NVQ and came across this on the internet. Can someone explain this picture to me and if it is correct.
  2. L

    UK electrical helper looking for experience.

    Hello everyone , I have just completed a course that gives me the qualifications below: 18th edition wiring regs Portable appliance testing level 3 qcf Part P Domestic Installer Level 2 I have done some practical but not as much to call myself a sparky. I would like to know how to go...
  3. S

    Ceiling grid panels which drop below the ceiling grid

    I am replacing in ceiling grid lights with LED panels, but the metal tiles drop below the grid rather than inside it, so the LED panels will be semi-recessed I don't think the client is going to be happy about this so I was wondering if there is a light which drops below the grid by 10mm to keep...
  4. C

    Earth rod installation services below

    Hello guys I have a job coming up where i will be installing x2 car chargers in an office car park (wall pods) supplied from a PME. When installing earth rods what procedures can anyone recommend to ensure you do not go through any services below? Site drawings would be ideal however they are...
  5. FatAlan

    Trainee Getting across ceiling joists from below - tricks of the trade.

    In the day and age of ..how many downlights can we get into one house, I'm intrigued to know what tricks / techniques folks use to install multiple downlights into an existing ceiling in replacement of a central pendant. In particular, once having located the joists, how do you get the cables...
  6. L

    Domestic What’s the going rates for the below instalation

    Hi just starting out working for my self after 10 years on the rail and I’m at a total loss at what the going rates are I don’t want to go in to high .I have been asked price up to Run a supply to a Bar in a garden, but due to the location of the distribution board in the house It would be...
  7. B

    Rcd tripping below 30ma

    40A 30ma RCD tripping out at 22.5ma, would people say that’s low and acceptable as I’d say it was a bit low should be more like 28ma?
  8. D

    Running cable over steel beams below chipboard floor

    My builders have left a 20mm gap above the steel beams supporting the new first floor by setting the timber joists 20mm above them. Is it acceptable to run cables through the gap and over the beams? Cheers Dave
  9. FatAlan

    Just below the soil surface in my front garden!

    Builder started scraping the vegetation off my front garden last week. Bang! Power cable no more than about 30-40mm under soil. Interesting watching the DNO guys come out and fix live. Very efficient
  10. happyhippydad

    Would you get the megger 1731 or 1711.... see below for details.

    I simply cannot decide between the 1711 and the 1731!! I only need the functions of the 1711, but I would REALLY like the rechargeable battery function of the 1731. The difference in price (after buying the remote probe, as it comes with the 1731) is about £300 (inc VAT). I really don't need...
  11. C

    Installing cable for move of electrical meter and isolator into flat from shop below.

    Hi guys. I have been informed by uk power networks the following. "As discussed on site as you do not require any extra power and you just want your 1p meter moved this will be a job for your supplier to install a riser to your flat and move the meter . I have attached a drawing that shows the...
  12. S

    below EPC band D

    Hi just after some clarification. We have a customer who is unlikely to achieve EPC level D prior to installation. It 16A single phase install. Am i correct that he will get 0.38p/kWh generation and 5.03p/kWh for export. many thanks
  13. C

    18th coming & it's set to go back in time,more bonding & ridiculous ruling.

    its coming & it's set to go back in time,more bonding & ridiculous ruling.
  14. G


    the house i am due to rewire has floorboards on the ground floor, can i rewire the sockets from underneath the same as you would the first floor ? are we permitted to drill out as normal ? tia
  15. J

    Questions in power engineering interview

    I would like to seek advice from experienced guys because I have interview test for my power engineering as below. Thank you. a) For 600A switchboard, what type of device setting need to do? Can I say that I need to do setting for direct acting for MCCB since more than 100A and earth fault...
  16. I

    Ring circuits one per floor pre mcb

    I am rewiring a house and I am running through just one socket on the ground floor to access the first floor ring. So the first floor ring circuit would include a socket on the ground floor. Is this wrong as I have read I the building regs separate floors, separate circuits, with their own mcb
  17. M

    Shower isolation outside bathroom

    Hello just been to look at a shower install the consumer unit backs on to the wall that the shower is going on so the easiest option would be to fit an isolator below the consumer unit and drill straight through the wall. Would this be ok to do or will i have to put the isolator outside the...
  18. A

    risk assessments and method statement?

    Hi all I've just been awarded a contract for pat testing in a massive stadium. They have asked me for risk assessments and a method statement. Ive never been required to do these for any of my other clients which do include local authorities. Can anyone shed any light on these and if possible...
  19. Rockingit

    Ambient temperature for testing and installing cable

    I know we're not supposed to test when it's below around 4degs, but there's this really vague memory at the back of my mind that says I've read somewhere that you're not supposed to install cable either due to the possibility of damage by cold fractures - - - or is this a figment of my imagination?
  20. V

    items under work tops ?

    Can I just ask how many of you hard wire your appliances under the work tops these days or do you use the plugs ? I hard wire everything just for the fact with the 13A dp above the counter there is no need of the plug below and you don't want to have to pull the items out just to change a fuse...
  21. L

    cooker switch

    hi i am putting a new oven in 3kw i am running it on a radial on 2.5 on a 20 amp mcb just to check can the cooker switch be an 13 amp fuse connection unit with neon light
  22. J

    Lutron Grafik Eye and LEDs

    Afternoon. i have an LED replacement project where I will be using Lutron control. I cant remember the rule of thumb to apply to LED loads e.g 800W per zone for SELV, but this figure is reduced for LED. Can anyone remind me what that might be. Havent got the stomach to trawl their giudes or...
  23. JD6400

    How to flag / protect on a moled cable ?

    I have been told in the past ( All be a builder that wanted the job instead ! ) that it is illegal to mole cables underground as you can not install a marker tape with it ! What thoughts do others have on this one ? Thanks in advance if you reply . Dave
  24. K

    20amp or 13amp switches??

    Hello, I'm just having a debate with one o my fellow work colleagues, when you go to fit out a kitchen do you use 13amp or 20 amp switches for your fixed appliances e.g fridges, freezers, washin machines etc ?
  25. D

    What is this thermostat, please?

    All I know about this thermostat is that it is inline, and has a couple of indicator lights on it, the purpose of which I do not understand. This photo shows heat traced pipe, I think. If it is known hereabouts on the forum, is there an opinion on its reliability and durability at all? Anyone...
  26. P

    E-Petition JIB members, Unite Union members

    For those of you in the JIB (joint industry board) and members of the unite union this news is probably old news as you will have had the letters already. But for those of you who didnt know a number of the countries biggest construction firms are trying to re write the rule book on employee`s...
  27. S

    Identifying BS88 fuse?

    Main fuse carrier says 100A 415V BS88 1967 on it. Looking in OSG page 57 for short-circuit capacity there is a BS88-2 and BS88-6. How do I know which I have? Thanks Rich
  28. S

    fluke polarity checker

    hi, just a quick question, does anyone know how the fluke 1652b checks polarity and where is it displayed on the machine cheers
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