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  1. Ring on a ring cable overload.jpg

    Ring on a ring cable overload.jpg

    • Richard Burns
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  2. Richard Burns

    4mm cable into the bottom of main switch.

    A very poor installation but could be compliant if the connections are sound and the cable route to the 20A RCBO is suitable, then the RCBO can provide sufficient protection to be acceptable. However there are a lot of caveats to the compliance so not generally a good idea.
  3. PD after point of protection.jpg

    PD after point of protection.jpg

    • Richard Burns
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  4. Richard Burns

    2365 Design Project - May need some advice.

    For a cafe even a small one try to think about what appliances would be used and how often to give you an idea of the likely current drawn when the cafe is open. You might even want to split down your circuits further. I would generally suggest making the best use of the cables being installed...
  5. Richard Burns

    2365 Design Project - May need some advice.

    In Bs7671 below the Zs formula it gives Ia as the current causing disconnection of the protective device within the time required. For a type B bsen60898, that will disconnect "instantly" in 3 to 5 times its rating, the worst case is 5 times i.e. 30A. This is the minimum current that can be...
  6. Richard Burns

    Junction boxes, other than Wiska

    I like the Spelsburg ELS junction boxes, available from both toolstation and TLC, seem well made and cheaper than overpriced wiska.
  7. Richard Burns

    Under cupboard lighting - help!

    I would expect that the unit should be removable by pulling it straight down out of the panel as it looks to be held by springs at the sides. somewhat like this The attached cable may take a circuitous route to the driver though and have a unique connection plug on the end.
  8. recessed-under-cabinet-light.jpg

    recessed-under-cabinet-light.jpg

    • Richard Burns
    • Media item
    • Comments: 0
    • Category: Lighting and Light Fitting
  9. Richard Burns

    2365 Design Project - May need some advice.

    The vehicle charge point diagram needs the earth fault path, therefore this is a fault to earth, which can be shown easily by a line conductor connecting the casing, this is the most likely fault but others are possible. Regarding the lighting because they are all likely to be on whenever the...
  10. Richard Burns

    dundee 2 way? anyone help!?

    Hmm, based on some of what has been described (particularly the massive joint box) and from viewing the photos I might assume he has "simply" wired two three way switches and a single one way switch with the connections from all switches (excluding the one way switch) collected in a central...
  11. 3 wire 3 way twice and a one way central wiring box.jpg

    3 wire 3 way twice and a one way central wiring box.jpg

    • Richard Burns
    • Media item
    • Comments: 0
    • Category: Professional Electrician
  12. Richard Burns

    Electrical Advice needed

    So long as you are aware of and work to the standards of the 18th edition of BS7671 then with your qualifications you would be OK to work for yourself as an installation electrician. Regarding notification to building control for new circuits, CU changes and work in zones of a room containing a...
  13. Richard Burns

    Science written exam......

    Good work, proves some information is leaking into the brain! Well done.
  14. Richard Burns

    I'd forgotton how miserable it is.

    Not fun being ill. Glad you have recovered from your "man flu"! Soldiering on is often the worst thing for recovery but very tempting to do.
  15. Richard Burns

    View image at your own discretion

    Just put a short section of trunking between the meter and the existing trunking to fill the gap, if installed lid to wall the lid can be slid behind the tails and the trunking clipped over the top.
  16. Richard Burns

    Lewden Control Gear Direct no longer manufactured?

    I was told in the wholesalers that they had tried to get some Lewden breakers and been informed they were stopping production. I assume that the wholesaler heard "head office closing down" and assumed the worst. Thanks for following up. I think most of the stuff I have is now Lewden branded...
  17. Richard Burns

    Lewden Control Gear Direct no longer manufactured?

    I have just heard that Lewden / Control Gear Direct have stopped producing their circuit protective devices as of 13th May, is this anything anyone else has heard of or can confirm? I have used a fair number of their consumer units and RCBOs and will be nonplussed if I now have to tell customers...
  18. Richard Burns

    Plastic Cable Ties & the 18th Ed

    If the cable tray is supporting the cables sufficiently to prevent premature collapse then there is no need to support them further.
  19. Richard Burns

    Trainees, Show Us Your Installs

    Good work there, Nice and neat. Well done, you just need to keep up that standard now!
  20. Richard Burns

    How to post pics as I’m clearly a dumbass

    But it is quite simple it is a TNCS supply, erm, with another supply, and then goes to the meter, oh meters, which is smart, well one of them, and then that one is E7, I think, then there are isolators, oh, but no, a time clock, but that was before the smart meter, that then does not join the...

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