difference | Page 5

difference

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  1. D

    Main Switch reducing Ze

    I don't know if any of you have found this before. During a test today I was finding the Zs on the circuits higher than expected, I tested the loop on both sides of the main switch (new MK dual RCD board) and there was a 0.5 ohms difference!! I have had this before on an RCD and replaced the...
  2. mattw73

    Difference between French electrical standards and UK

    Hi, I'm just about to finish my C & G 2330 course and am moving to France. I know that experience counts for pretty much everything but can anyone tell me the fundamental differences between the UK and France in terms of standards. Thanks, Matt
  3. D

    Security Lighting

    Just been to a job where a customer is having problems with security lighting, Once the light is turned on the PIR is completly pointless as the light is on continuously. Only way of turning it off is to turn the power off Any idears in why this is happening ?
  4. E

    Whats the difference between honeywell cm900 and cm901?

    Are they the same thing or better model? Im looking for the cm900 in scewfix but they only have the 901. thanks
  5. W

    Meter Advice please FLuke 1652

    Hi All - be gentle my first post as a new member. Im looking for some advice from all you experts - Just purchased a meter to get some practice and get familiar with test equipment for the 2391 exam - Was supposed to have purchased a Fluke 1652 C but a fluke 1652 not the c model has been...
  6. R

    What is the difference between Domestic Installer and Approved Contractor

    Hi can someone tell me what the difference between a domestic installer and an approved contractor please? I have a feeling an approved contractoris someone with nvq level 3 and 2391 test and inspect but im not sure and cant find this info out anywhere. Thank you.
  7. D

    A project with a difference !

    Hi my name is Chris and i have been a sparky for the last 30 years, I have decided to join and post on here to ask for the communities assistance. About 2 years ago a small group of us decided to take on a project to save Drakelow Tunnels, see Drakelow Tunnels Official Website. This is a...
  8. La Poste

    What's the difference between a good and a bad electrician?

    What are your thoughts? I think a good electrician will accept full responsibility for their work and that responsibility should extend for the life of the installation. A bad electrician would chuck it in any old way and be off in the van as quickly as possible without a second thought.
  9. W

    Telling the difference between good and bad LEDs

    does anyone know of anywhere where i can find useful info on what constitutes a good LED lamp or a rubbish LED lamp? someone has told me to look at the 'fins' which are to do with the heat dissipation - is that correct?
  10. D

    Difference between the 2391-20 and it's replacement?

    Does anyone know what is the difference between the 2391-20 and the new design course they are bringing out to replace it? Also when will the 2391-20 no longer be available? Cheers
  11. J

    1361 type 1 & 2. How to tell the difference?

    Hi all, quick question, how to tell the difference between type 1 and type 2 1361 cartridge fuses in the company cutout. Often there are years on there ie. 1361 :1947 instead of type. Is there a year where they swapped to type II? Thanks!
  12. P

    What a difference a year makes

    Found this from early 2011 Wonder if they meant it like that...!
  13. a1guvner

    Difference of Earth Potential

    Whats peoples view on this on i had a while back Massive aircraft hanger which had various maintenance bays within it, we were constructing a new training facility for a college within one of the bay areas, Carried out our installation with no problems and airside in one of the bays they had a...
  14. infinity

    Yeild Difference Schott & Sanyo

    I have been looking at both sanyho Hit N240's and Schott 235's on pv_sol. It seems there is not a lot of difference in the annual KWh produced by the sanyo where as it could cost my customer up to £2k. How do people justify spending the extra on the sanyo when it wont payback the difference? Am...
  15. J

    What the max difference PFC for TNC-S for PEFC / PSSC

    Hi I was wondering if anyone could let me know what the max difference in PEFC and PSSC in a TNC-S system: I ask as I measured PSSC 3.8kA & PEFC 3.0kA and have never seen it that far apart on a TNC-S before. This was repeatedly the case, the tails are 25mm, 1m in length and the EC is 16mm...
  16. B

    Swap Schuco rail for mid/end clips and cash difference

    Hi, I need some schuco sch257321 end clips and some sch257322 midclips please can anyone help. 45mm depth for Znshine panels (also fit PhonosolarPS240M). I have available some rail in Lincoln BP130 (25m +)and BP160 (Approx24M). I had offered it to MartinJ on this site but he hasn't got back to...
  17. S

    Shading : yes, it does make a difference !

    There have been plenty of topics on the subject of shading - here's another one ... from my perspective The original link had an issue - this one should work with more web browsers: Home Otherwise, try the original link below: Click here
  18. D

    Core drill advice

    I'm looking at buying a new drill to core drill with, up until now I've just used my SDS drill which has been fine with 100mm, or 127mm holes. However I've just bought a 150mm core and my SDS drill needed nearly all day to get it through nine inches of brick, and it didn't seem to enjoy the...
  19. B

    Cat 6 Cable Difference To Cat 5

    Anybody give me some information please on Cat 6 data cable please? Have used Cat 5 plenty of times before so have a good understanding of it but not really touched Cat 6. Had a client request this to be installed, and only thing ive read up about it is on wikipedia:- Category 6 cable -...
  20. S

    Difference between part p and domestic installer?

    Hi all I'm currently looking to join a governing body carrying out just domestic work. I want a scheme that will enable me to do everything domestically, ie major re-wires and sign my own work off. What is the difference between part p from elecsa or the domestic installer scheme from...

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