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  1. C

    UK Changing plastic light switches to metal

    Hello! Complete novice here. I'm changing a plastic light switch to a metal one. There's a metal back box. I intend to run the earth cable from the wall into the back of the light switch faceplate. Then run another earth cable from the faceplate to the back box. Is it as simple as screwing in...
  2. J

    If you drive a metal rod can you use it as a reference to measure voltage

    If I was to drive a metal rod in the ground and measure between live and the rod will I get a reading? ( I’m still studying)
  3. R

    UK Twin and Earth in metal trunking

    Hi guys, I had to carry out some alterations to a domestic installation the other day and was pleasantly surprised when having to run a new circuit how neat the CU was. It had 75mm metal trunking installed to the CU with bass bushes installed. A lot of effort had gone in to it to keep it neat...
  4. N

    Correct grounding of metal junction box w/splices for 3 circuits

    I have 3 circuits (microwave, disposal, and dishwasher) entering a metal box where the THHN wire will be spliced to Romex. I spent half an hour reading 2020 NEC Article 250 but didn't see multiple circuits specifically addressed. To ground the box do I just need to pigtail off of one circuit's...
  5. D

    UK DIY Shocker!!!

    Hi guys, I hope everyone is well. So to detail my experience, I had a loose wire behind my electric cooker mains plug, so I tested the plug after sorting the wire forgot to turn off the mains at the box and yes as you can guess as I went to push the socket into the wall to screw in, two...
  6. U

    How to tell if a metal halide fitting is pulse or probe start?

    Hi, I recently bought a metal halide fitting but I have no idea how to tell if its a pulse or probe start unit. I have what I believe are both types of bulb and the fitting will start both, would that indicate its a pulse start? With the bulb which I believe is a pulse start bulb (has just a...
  7. J

    Earth bonding metal balcony

    Last year I had a large cast-iron balcony constructed with steps down into my garden. The balcony is bolted into the walls and also into the pavement where it meets the garden. Is there a requirement to earth this? If so, should it be a separate 10mm CPC direct to the CU or could I link it to...
  8. Baddegg

    Metal framed garage......

    EICR on an empty property this morning, potential buyer has instructed, few bad points but overall not to bad, and then this.....16a wylex plug in mcb-2.5 t&e- 32a 10ma Crabtree rccb then runs 8 metres in conduit (broken in places) then goes underground for another 20 metres to feed a db in a...
  9. I

    Swapping plastic faceplates to metal

    I’m looking to swap the plastic switches & sockets in our house to metal. Ive removed the plastic faceplate, and can see that there are a couple of earth wires in the back box, which terminate into a choc box. I assume the builders left them like this in the event people swapped to metal like...
  10. G

    "sorry love, you need a new metal cu, it'll make everything so much safer"

    I can't get my boards as artistic as some of the YouTube sparks but came across this absolute shambles today... I know there's cowboys in all walks of life but do any other trades suffer so much with unskilled people charging money to do skilled work? (and getting away with it)
  11. Gavin John Hyde

    Recommendations for metal cable fixings

    I am planning a job in Bath for an EV Charger on a Grade 1 listed building. Have a long cable run at height, planning dept have raised issues with cable cleats! feel they are a bit chunky and would prefer something with a less chunky profile!! given they are nearly 2 and half stories up from...
  12. D

    Metal Back Box -rewire

    Hi, had a rewire done, sparky didn't replace some of the metal back boxes, just run new cables into them, I don't have a problem, taking them out would have caused the plasterboard to get damaged, but mrs thinks they should have been done. Seems pointless, they are metal, new rubber grommet...
  13. L

    Metal consumer only option now?

    Following on from this saga: SWA questions, doubting electrician - https://www.electriciansforums.net/threads/swa-questions-doubting-electrician.180536/page-2 I had an electrician out to quote to rectify the problems yesterday after dealing with the tripping issue myself. I have now been told...
  14. N

    Commercial Metal Halide still not working after control gear replacement

    So I've got incoming mains splitting (forking) off into 3 light fittings. They are HID metal halide lamps. The middle one (thats not working) is 70W, and the other 2 are 150W. I've replaced the control gear and bulb. It still just flickers blue and doesnt actaully start. It also buzzes at the...
  15. U

    wiring metal light holder to old ceiling rose

    Hello there I bought a vintage smoked glass shade chandelier pendant ceiling light and wired it up ok (well the bulb didn't blow) but took it back down because the brass thingy wouldn't do all the way up on my existing ceiling rose.Can i just wire up the metal ceiling light holder...
  16. N

    Questions regarding metal gang boxes

    Hi everyone! I am an industrial designer working from Israel, currently working on a product that will be installed in american homes and needs to fit into a one-gang box. I'm having trouble figuring out how common are the metal boxes out of all the home-installed electricity box...
  17. happyhippydad

    Does this metal post need to be earthed or bonded or neither?

    I have 5 x 6m metal posts sticking out of the ground used for 200w floodlights to light up a manege. This is a domestic stables. The posts test as 35ohms to earth. The installation is TNCS and has 30mA RCD protection on all circuits. The floodlight will be earthed and in doing so the post will...
  18. S

    Technical advice required - metal socket or plastic? / Trunking?

    Hi all Recently my company (I'm just an employee) moved into a new unit and have installed some shelving, the BigDug kind. We've had plug sockets located above (2) each unit to provide power. This was done by the electrician so that's all good. I need a plug socket on each shelf (5 in total)...
  19. Pete999

    1st fix metal back box fixing, how do you do it?

    Like the title says, I think it may have been posted before many moons ago. 1st fixing bac, boxes I used to bed all my boxes in with bricklayers compo ( the stuff they lay bricks with) wait until it sets, if you have time, and then drill and fix with rawlplugs and screws, how or what method is...
  20. R

    25mm Knockout Metal Clad Boxes.

    I’m looking for some metal clad sockets. But I need 25mm knockouts. Does anyone know any surface mounted metal clad sockets that have them? MK do some nice ones but they are only 20mm knockouts.
  21. D

    Why? Is metal conduit so thick

    I have been given a short length of Emt tube from America , which is basically their ‘go to’ produce for surface wiring. It is thinner than our version and much easier to bend than our version. I would say it’s not much thicker than copper plumbers pipe. But imo offers good mechanical strength...
  22. I


    We have some CHILLER SYSTEM event start for first time use water 700 TDS and than stoped for few month leter, we worry at the isntalation piping and chiller tube will be rust and cholride in stainless the tube, so, how to we keeping for and chemical should be used for that. thanks
  23. S

    Fixing light fitting to metal cladding

    Hi guys Got a job to replace some external lights to an industrial unit.(mostly 150w LED floodlights around 12kg) All lights are currently fixed via nut and bolt with no access from inside as they have now converted to offices so unable utilise existing fixings. What do you guys recommend using...
  24. I

    Refused to install metal light fitting

    Today I had a quick job on the way home which was swap a pendant for. Fancy light fitting , but when I removed the pendant there was a pre 1966 2core twin cable And a separate 2.5 single earth cable fairly new , it looks like someone has gone around every light with the earth from the board to...
  25. H

    Please don’t shoot me. Static caravan and a metal shed.

    Ok. Static caravan....... The site supply arrangement is apparently TNS and the static caravan uses this for its earth. (I will check with the DNO that it is aTNS arrangement.) There are three MCBs in the static caravan CU, one of which directly supplies to a solitary double socket inside a...
  26. happyhippydad

    16mm metal back box.....6p each!

    Hello all.. Just wanted to let you know about a bargain! I wouldn't usually buy from e-bay, but you cant really go wrong with a metal back box. 100 Flush Single Metal Back Boxes 16mm 25mm 35mm 47mm 1 Gang Electrical Pattress -...
  27. rolyberkin

    Metal Cut out - Fuse Type

    Hi can anyone advise what type fuse was commonly fitted in an old style metal cut out, the head is being changed imminently by the DNO but I would like to know what is in there? Thanks
  28. C

    Plastic conduit into metal cu

    Hi this is my first post here. I’m a newly qualified spark mainly working in domestic houses, I got a job coming up where I’m planning to install pvc conduit for some sockets in garage attached to a house. Would installing pvc conduit affect the fire rating of a consumer unit or would I just...
  29. M

    Do I Connect Clean Earth On Metal Switched Socket

    I’m replacing old plastic light switches and sockets for metal ones. I’ve gone with BG Nexus range but I’m a little confused as to whether or not I need to connect a wire to the clean earth connection. Looking at the wiring diagram it is not used. I know I need to run a fly lead from the switch...
  30. D

    BG Dual RCD metal DB's

    Anyone had issues with the RCD's? Added a spur from a new DB yesterday (not installed by me). The RCD failed the 5x test when tested at the load terminals with all mcb's off. Perplexed I tried the other RCD with the same result. MFT tested the RCD on another job later with results as expected.
  31. C

    Kopex inside metal trunking

    Hi all, New to the forum, question regarding Band 1 and Band 2 segregation... So on a site I'm working on, installing access control system. Now the access control panels have designated metal trunking for all relevant cables being low voltage. The trunking is directly above the panels. The...
  32. Y

    Bonding earth to metal furring behind plasterboard.

    Should I bond all metal furring behind plasterboard to earth busbar
  33. andysparkfree

    Metal all the way, no brainer

    Hi all, just thought i'dd share the picture of the live distribution board we came across this afternoon following a callout not only was this live when we got there (seems that the fire brigade removed the wrong fuse from the ryefield board) but is a shocking example why every old...
  34. haptism

    Where are you getting your metal buckle clips

    Wheres the best value for £ metal buckle clips to be found in 2019, ive seen the SAREN ones but they are well pricey, and you need to buy the nails for them separately. The Shneider metal clips from screwfix £12 per 100 wtf. Where are the compliant housebashers getting clips for T&E nowdays ??
  35. T

    Class 2 metal fitting

    Bought 2 metal wall lights arrived today and just opened them. They are completely metal in construction states on the fitting they are class 2 and have no earth connection. The cables leaving the chocbox inside to the lampholder are single cores. How can this be class 2?
  36. M

    Domestic Leave existing ceiling rose within new metal light fitting??

    I'm your average DIYer and after advice about replacing a pendant light with a new flush metal fitting. I can fix the new light to the ceiling and the existing rose sits within the void of the new fitting without any clearance issues. Is it OK to leave it in place and wire the new fitting into...
  37. M

    New flex for old metal lamp

    Hi everyone I inherited an old WW2 angle poise metal lamp recently. It works fine, but I'm not sure it's safe... the wire looks antique and is obviously just 2 cores. I've thought about putting a new cable in it, and I'm guessing that it needs earthing as it's a metal lamp. Can anyone advise...
  38. suffolkspark

    Oil service bond metal tank pme

    I have just done an EICR... Havnt finilised coding yet. Property is TN-C-S Incoming oil to boiler... Copper oil line with pvc sheath, buried to metal oil tank sat on slabs on ground (it is not raised up) technical said it should be bonded.... Imo by bonding im taking pme potential out to the...
  39. the pict

    metal clips friend or foe

    I have tried a few of these now and to be honest I am not impressed, as to those wall dogs screws ...... really who is kidding who here
  40. M

    lighting in the metal shed

    Hi, Need a word of advice, how should I run supply to two metal sheds that are located about 20m away from the main DB. Should I run in SWA with 10mm bonding and as separate circuit to each shed or through sub-board adjacent to them? What IPX of switch and lighting should be, I'm expecting some...
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