• Thanks for visiting ElectriciansForums.net. We hope you find the information you are looking for. But if you don't manage to, please feel free to Register and ask a question yourself. You can delete your account at any time should you quickly find the answers to what you need.


  1. B

    solar pannel nickel-iron system question!?

    Ok, so I am a little stuck on one thing for a while now. For a nickel-iron battery bank of 24 volts, each cell is 1.2 volts and has a charging voltage of 1.65, so 33 volts is needed when for optimum charge. The 24 volt, 100Ah battery bank requires a optimal charge rate at c/4 (25 amps for a 100...
  2. Sue1

    Question from a wetpants

    Can someone please clarify if a plumber with part p and 18th edition who isn't registered with any governing body can change a shower with the same kw as long as the cable is the right size and the fuse, the rcd works and the shower has an isolating pull switch. Cheers. Seems like a lot of...
  3. M

    UK Nest e thermostat wiring question

    Hi just bought a nest e thermostat . Ive included a picture of the wiring for the old thermostat and the connections for the new nest thermostat. I just want to make sure it’s compatible before I get someone to install it. Which wire goes to which connector for want of a better question ?
  4. C

    14-50R ground/neutral question

    Question: Do I tie both the ground and neutral to the same bar in the panel (on the right in the photo)? Explanation: I am installing an outdoor 14-50R receptacle to power a travel trailer on my property. The previous owners had one installed but the receptacle and UF wire was removed by the...
  5. A

    GFCI question connecting to 40 amp line

    I am a DIY, but not sure if my current problem is DIY solvable given my limited electrical knowledge. I recently purchased a home that has a 40 amp line that runs to a non-working (always displays fault light) GFCI receptacle in a bathroom and then shares the current with two other bathrooms...
  6. DevonLady

    Tv aerial question

    I found this on my lawn, under the aerial on the roof. My tv is absolutely fine, should I get someone out for this or not bother?
  7. dmitry1

    question re DTX (next fail)

    if i have DTX results fail. on next HDTDX has large spikes at both ends and have very marginal to failing results. on Insertion Loss results all wiring below limit line. Cable does test marginal at low frequencies (reflection loss) but not too badly… QUESTION: does this look like bad...
  8. J

    Led spotlight question

    First of all, I am trying to learn basics of LED tech strictly as a challenge, so I'm starting with basics. I've gotten several LED devices. First one is non working LED spotlight. . Going to try to fix it. Checked power supply. 110 in, measured dc v out of power supply is 167. Yes, 167...
  9. Pete999

    Another housebashing question

    When wiring New Builds, and positioning lighting points, is it a case of fitting your own noggins between joists/rafters, or is this down to the builders, is it a case of as close as possible to the nearest timber joist or rafter, and get the boarder to cut the hole in the Plaster board, I'm...
  10. J

    Career path question

    So I'll give you a brief catch-up, I will be starting college next month and contacted a lot of sparks,companies about work etc I managed to have a chat with a lighting company that does floodlights, streetlights, schools, football stadiums etc. They have offered me work one day a week around my...
  11. J

    Another coding question

    What code would you suggest for uncovering a power circuit wired in copper cable less than the csa stated in table 52.3 provided the ccc of that cable wasnt effected. Thanks Judd.
  12. TonyMitchell

    Current Clamp Question

    I have a Megger MFT1741 with current clamp, also a Fluke 117. As the MFT can't record min/max, I'm using the current clamp with the Fluke multimeter, following Megger's instructions and understanding the 1000:1 step down ratio. Just taking some basic readings on known values, the results are...
  13. A

    Initial verification question

    So I've got my 2391... and was always taught and was under the impression that when carrying out R1+R2 tests on all circuits you must carry out the test at all points on the circuit, not the furthest point or a selection of points, I thought the test was to A. Prove a earth path that is suitable...
  14. happyhippydad

    A question about how current travels through the real earth?

    When testing Ze on a TT the only connection between the line and the earth rod is the actual ground. When you do a Ze is it actually sending a small current through the actual ground from the earth rod at the house to the earth rod at the transformer? Also, related to the above, I have 2...
  15. P

    New kitchen electrical safety question

    I've just had a new kitchen fitted and the installer came out several months ago before work was due to start and checked out what needed doing and at that time he never advised me that I needed extra power plugs. He started the work last week and advised me that I would need to purchase a 5...
  16. D

    Domestic Earthing a PV system question

    I am fitting up a small PV system on a porch roof using a small (Plug in Solar) 4 panel rig just would like to know if its lightning earth grounding wire can be threaded under tiles to emerge as required at its brackets (to be neater), or would it need to be topside. Figure there are rules for...
  17. C

    6mm earth tn-s question

    Hello guys After doing the adiabatic the 6mm will be fine as the main earth on a tn-s 60a 16mm tail fuse board. Is there any reason past the Calc this may not be ok as running a new earth may be tricky
  18. R

    Fuse box question

    Can someone tell me what the middle white fuse would be used for? We have an issue where we lose power to everything to the left of it (downstairs lights, upstairs sockets, heating, downstairs sockets) and we think everything to the right works, I know oven and upstairs lights do. Nothing...
  19. A

    Trainee 5 Pin Relay Question

    Hi, I have an aftermarket ignition coil harness utilizing a 5 pin relay, the relay is corroded and doesn't work. It's also discontinued by Denso and they don't have a wiring diagram for it (P/N 056700-7240). I managed to source a similar harness from a later model which has a slightly...
  20. G

    Domestic Yet another induction hob question

    Hello I have a new AEG induction hob rated at 7.4kw max using power sharing but AEG do not specify a cable size or mcb rating nor will they answer the question I submitted to them by email. I think their position is that it is down to the electrician to decide. The configuration is as follows...
  21. C

    Domestic Difference in amperage though household meter question

    Hi, I have just joined as I have a non urgent but nagging question...hope you guys can give me peace of mind! Thank in advance. I have just checked the amperage coming in on the meter tails prior to the meter (Between the main fuse and the old style dial meter) this is 0.85 amps. However the...
  22. S

    PME or not PME, that is the question?

    Noticed this near me ... I've got to assume it's a pme rod, but not connected. Maybe an old one that they are going to connect to the forthcoming branch off.
  23. C

    Domestic PV Generation question

    I listened to an article on the radio about solar panel owners who were receiving payments for electricity generated but were not benefitting from lower electricity bills as a result of their main meters being incorrectly set up on installation in some way. I am wondering if this could be...
  24. W

    Domestic Question. Signal for hot water not getting through

    Hi all, 
 After boosting the hot water for probably too long on our pulsacoil thermal storage, the circuit breaker was tripped and I saw that the timer unit had melted through. 
 I got a replacement unit and have installed it and flicked the circuit breaker switch back on. The water seems to be...
  25. M

    Service Cable to sub panel theory question.

    Going to be running a sub panel underground 100+- ft to new steel building will be running a 2-2-2-2 Aluminum SER Cable. (Planning n 100amp svc even thought I doubt I will EVER need it.) If the #2 SER Cable is 2 (+) 1 (-) 1(g) Why am I running a ground all the way back to the panel...
  26. M

    Which Aerial CoAx Connectors? And a question RE couplers

    Hi again Having decided from my previous post to go with Webro WF100 (100m for £40 on Amazon), now I'm trying to find out what connector to use . I just need a CoAx to connect to the TV. Any recommendations please? At the aerial, the cable connects via screw terminals so nothing needed there...
  27. M

    Oven supply question

    When our Victorian semi was tarted-up in the 1980s, the cooker circuit to the kitchen was ripped out but fortunately since we moved in in 2000 the oven we've been using (with the gas hob) has been OK on a 13A plug. That oven is now well past its best before, and the replacement the wife wants...
  28. 4

    Oven / Cooker Hob Diversity Question

    Hi, I would appreciate some views on the following issue I have. The Cooker radial in a house has been wired in 2.5mm T&E, to save the expense of a larger cable. Without boring with the detail, I cannot pull out and replace the existing cable, nor wire in a new 32A circuit using another...
  29. M

    Rcd rating....may be a stupid question

    ....what mA is this rcd??
  30. H

    Eicr sample size question

    Good afternoon Was just wondering when a sample size is set for an EICR Say 50% would the remaining circuits have to be identified for schedule purposes. I'm training to becoming an electrician and it's something that I'm unsure about. Thanks Harry
  31. Ian Rogers

    Oven installation question.

    Hi, I have a scenario I would like some opinions on please. I have 2 ovens, one on top of the other. Oven 1 – 3.5kW (not yet installed) Oven 2 – 3.5kW Each feeding into a common heavy duty Bakelite Junction box. Each using the cable hardwired to the appliance by the manufacturer (So I assume...
  32. Bob Geldoff1234

    Part 'P' notification question?

    If notification under Part 'P' is a legal requirement for a consumer unit change, then if a person changed the unit,issued a non scheme EIC and didn't notify Building control then would the installation be deemed illegal? I thought Part 'P' was to make sure that the installation was done to a...
  33. W

    2365 305 design question

    Hi all, im new the the forum. Curently doing the city and guilds 2365 level 3 course. Got a question regarding the 305 design assignment. When filling out the table to calculate the voltage drop and calbles sizes, do i use the design current etc before or after the diversity factor?
  34. M

    Domestic Armoured Cable Colours Question

    I need to run an SWA cable to get power to a cabin. I have a 4mm 3 core cable, cores are brown, black and grey. Is that OK, live brown, neutral black and earth grey with green/yellow sleeve over. Thanks Mick
  35. happyhippydad

    Working on electrics with 2 supplies.

    I have little knowledge of PV. When working on circuits supplied by a domestic CU, is it fine to just have the main switch off in the CU or should you be isolating the PV as well? The stickers all over the CU's in this example all say to disconnect both supplies.
  36. Doomed

    Just a quick question

    In a large yard, incomer in corner, TNS, feeds some switch gear and then a long length of SWA to garage in other corner of yard about 100m away. By garage I mean a big garage, water canteen and all. Readings are good at the garage sub board. There is a bit of me that wants to TT the garage, but...
  37. E

    Domestic courses question, don't beat me.

    Hi All I'm new here and need some guidance on training to compliment my job. I'm a self employed kitchen fitter that's looking into the hated domestic course so I can do my own electrics and sign off. I have a few reasons for this which I won't bore you with. I fully understand that I will be...
  38. R

    Question 2 on Design Project

    Hello, I am just starting my project. I have uploaded the questions. Questions 2B & C Socket for the kettle - each of the tables. Socket for TV - next to the Kettle, as I assume it's not wall mounted. Two single sockets for Laptop/phone to each side of the bed FCU - by the main entrance...
  39. robd

    QuickBooks question on invoices received

    Hi all Anyone who uses QuickBooks, I'm looking to start using it but just getting my head round it. I can see when you get a receipt you can take a pic and it will be filed my question is what happens if you receive an invoice by email can you file say a PDF into QuickBooks? I really want to do...
  40. C

    Seems like a dumb question, but is a socket underneath plumbing allowed now?

    I just moved into rented accommodation and found this (see pic) under my sink. When I was last in the electrical business 30 or so years ago it would have been classed as a horror show waiting to happen, thoughts?
Top Bottom