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  1. J

    Help with electrical symbol

    Dear all I've come across this symbol on (most likely) korean electrical drawings, a wire(?) around other wires, sometimes connected to terminal, sometimes connected to ground. Upload the image directly to the thread: The most awesome images on the Internet - https://Upload the image directly to the thread.com/a/PPAK8 Does anyone know what is this about...
  2. T

    Symbol on new lightbulb - Crossed through bulb?

    Hi, I bought some new lightbulbs the other day (photo attached). On the packaging is a symbol of a bulb in a house, crossed through. Please can anyone advise what the symbol means? Thanks in anticipation!
  3. Edtwozeronine

    Correct symbols for physics notation

    Our tutor wants us to use what looks like a Beta symbol for Tesla's, but in our official notes from city and guilds they want us to use a capital B. Another thing that I'm having trouble with is the proportional to symbol. What does it mean mathematically speaking? Is there a button for...
  4. A

    Old Double Insulated Appliances

    I am looking at a receiver/amplifier that was manufactured in the mid 1970s. It has a very solid all metal case. It is powered by a mains lead that has only two conductors, active and neutral. It does not have any Class II notation or symbol anywhere on the case. I am wondering whether the...
  5. G

    DXF Symbol Library

    Hello i'm a mechanical engineer and i used to work with the 2D-Cad System Draftsight. Now i'd like to draw some circuits, and so i need a symbol library for draftsight or autocad in the DXF format. Does anybody now some free oder cheap symbol library?
  6. Lee Gold

    Schematic symbol help

    I need help with symbols and drawing reading, I can't read a drawing at all and had a look on google for symbols but can't find the best site, can someone point me in the right direction on how to read drawings and the symbols I need them mainly schematic industrial
  7. i=p/u

    Led

    Yo elec tec bulbs and couplers. anyone done and jobs recently in fitting out shops with leds , do you think a 1200 x 300 led panel would replace a 2 x 35w t5 ? how accurate is the data sheets to actual installing them? if you can add to this post , be my guest . Ty from a well trained...
  8. M

    What's this symbol

    Hi all, hopefully you can see the image of Electronic IR sensor switch on it is a circle with a X in it two lines trailing from it with two dots at the end I understand they may be (lamp or directional) symbol can someone please clarify... I supplied it to a colleague to power a low voltage...
  9. matt1386

    Trainee - Advice please

    Hi all, sorry if this is in the wrong section, wasnt too sure where to post it Basically ive started college a few weeks late so im having to play catch up at home to get to where the rest of the class are at Ive come across a question on my work sheet which im not sure how to work out and...
  10. driverman

    MCB breaker markings reset or thrown away

    Hi Guys, Hopefully a quick question.......Breakers are marked by the manufacture symbol if they can be reset / reused or thrown away after a fault current. Where in BGB or OSG can I find the symbols? I've been looking. I'm sure they are in there somewhere. Thanks
  11. S

    Megger LCB2500/2

    I recall biff55 really rating his that he got off ebay, fair play. I got one years ago, seemed fine for a while, but then it wouldn't make loop measurements, kept coming up with the 'Noise' symbol and take an eternity to give a reading, if at all, which was basically a random number. I've got a...
  12. M

    megger 1552 sine wave symbol

    Don't know if any one can help here. Today whilst doing a Zs test my megger produced a weird symbol that looked a bit like a sine wave with a vertical line dissecting it at the top. It have the correct Zs result at the same time. But id never seen the symbol before Can't find anything about it...
  13. R

    Dead Testing Results

    Hello all, i have some dead testing to do, i just have a new megger Robin KMP3075DL and when using it in Insulation test mode (500v - 20Mohm) on 2.5 twin + earth as practice, i test between LINE and CPC and get the reading from the display (up arrow 1) so on my schedule of tests sheets what...
  14. D

    Symbol

    Can anyone tell me what this symbol represents? I can't find it in BS 7671 or the OSG. Its like a single socket but mounted to one side of a rectangular box. It's situated in the kitchen of a floor plan for a domestic dwelling. Also, can someone advise why certain symbols (like this) are in...
  15. Dic Penderyn

    Cable spec for a factory cooler!

    Howz it Lads & Ladettes! There's a huge project afoot! No cable spec yet! Would anyone have a incline to what cable size might be required for the following Cooler for a Diary Factory? · Model RTAC 250 HE · Power: 628 kW · Electrcial power unity: 253 kW · Power...
  16. mattyevz

    Price rewire 3 bed (customer to chase)

    Hi guys just woundering a fair price for the following 3 bed rewire (customer to chase walls) was thinking £2400? thanks guys Note: all accessories in standard plastic unless otherwise stated Electrical Supply · fit 17th edition consumer unit(customer supplied) ·...
  17. F

    Laptop adapter with grounded plug and double insulation symbol - okey? Second try

    Hi I don't know what happened but my first thread comes up as invalid? Because of to many pictures? Anyways, my question stands, and I hope someone can answer me, it would be much appreciated. Is it any drawbacks of having a laptop adapter with both ground and double insulation? I have never...
  18. F

    Laptop adapter with grounded plug and double insulation symbol - okey?

    Hi I recently bought an unoriginal adapter that came with a grounded plug, I noticed that the sticker also had the symbol for double insulation. I have never seen this before, is it ok? Here are som pictures:
  19. I

    Symbol for energy efficient lampholder

    Hi All Is there a specific symbol for an energy efficient lampholder? I'm currently doing the 2391-20 and none of the symbols on the Legend supplied show such a symbol! Many Thanks
  20. E

    how will the JIB grade me?

    heres the list of quals i have: · City&Guilds 2391-10 Inspection, Testing and Certification of Electrical Installations · City&Guilds 2382-10 17th Edition Wiring Regulations · City&Guilds 2377-11 Management of Electrical Equipment Maintenance...

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