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  1. timhoward

    Upstairs flat cutout

    Your thoughts please. Upstairs flat. This is supply side. It disappears through an air brick, and possibly goes to a shed downstairs but I've been there during daylight hours yet. There's a DNO-looking earth running with it. (The 1.5mm comes from the CU). Obviously whatever it feeds is...
  2. timhoward

    Ballast for low pressure sodium street light bulbs

    I have a customer that had an older street light with a 30W Phillips Sox bulb in in. It's an absolute pain to get to as it's mounted on a building very high with obstacles preventing easy ladder access and steps / ramps at ground level all around it. When it stopped working I offered a new LED...
  3. timhoward

    Ad that's inside a post has been moved to below the post

    @dan the ads have gone crazy again I'm afraid. I couldn't see the OP at all, and that is with a subscription to hopefully avoid ads. Any chance of a look?
  4. timhoward

    Distribution circuits in Section 705 location, RCD needed?

    I just want to check how I should be interpreting section 705. 705.411.1 states required disconnection devices, the first two indents covering final circuits and sockets, requiring 30ma and 100ma RCD's depending on rating of socket. Indent 3 says " all other circuits" need 300ma RCD. Does that...
  5. timhoward

    Misuse of Quickwire plug and socket

    Aside from their intended use on lighting circuits, a while back it occurred to me that they make quick and simple test adapters. I wait for various commando plugs to come up cheap on ebay and then do this to them. My collection now stands at 16A (3,4 and 5 pin) and 32A (3, 4 and 5 pin)...
  6. timhoward

    What are these called?

    Hi I need to recreate something like this (which was very nicely done) I just have photo so far, not been there. What are the grey covers called? I'm struggling to find a source of them. I though it was all separate components - DIN terminal blocks, interconnecting link bar, and a cover. Or...
  7. timhoward

    Help please, new device to me

    This MCCB is in a distribution board in the consumer half of a substation at a school We've now tested everything downstream of this (and another 2 similar devices). My current understanding is that the maximum PSSC to operate this device a maximum of 3 times is 50% of the Icu, so 12.5kA ...
  8. timhoward

    Testing large amount of PIR controlled lighting

    I just wondered if anyone had any tips for testing an irritating design. It's a large self-storage facility, several RCBO protected lighting circuits serving two floors, no light switches anywhere, just PIRs on radial circuits controlling about 4 lights each and there's about 30 such setups...
  9. timhoward

    Today's project, success

    If you saw the Good Morning thread, you'll know what I was up to today. I've just a good stopping point. The back-story: For the last two weeks I've had the use of a shiny Megger X1. While I'm automatically biased and grumpy towards against anything new and expensive, I have to concede that an...
  10. timhoward

    Comparing Testers

    While I have more testers of various ages that I know what to do with, I don't have anything that does a 2 wire no-trip loop test. Normally this doesn't bother me as in the past I've observed such tests are unreliable and rarely repeatable. The other day I had a commercial testing job with lots...
  11. timhoward

    Ali-express DY4100 Digital Earth Tester

    Don't worry I haven't gone (completely) mad. About a year ago a ride-on-lawnmower became over-friendly with my long RE test leads while I was drinking tea inside. I needed some replacements for a job next week so I was about to shell out nearly £100 for a new set, and then a thought crossed my...
  12. timhoward

    32 amp 3 phase socket, 300ma RCD

    I'm interested how you would all approach this one. A 3 phase distribution board on a caravan site, under lock and key. Only warden and manager have access. One of the final circuits is protected by a 32A 3ph MCB and it supplies a 32 amp TPN socket adjacent to the board, the socket having it's...
  13. timhoward

    First Zappi Install

    I've finally found a customer rich enough to want a Zappi, and by heck it's so much nicer to install than the budget brands! But I wonder if anyone has installed one with recent firmware? All of the documentation and training videos talk about Device Limit and Grid Limit which make sense. The...
  14. timhoward

    £0 Pre-pay meter and EICR

    I have an new set of circs here... Landlord in Cyprus EICR needed in empty flat. No credit on meter. Need power for Ze (TNCS) and RCD test at minimum. New pre-pay smart meter was installed after last tenant left. This one needs a code entering, not the much simpler pre-pay token thing. No sign...
  15. timhoward

    Latest showing wrong forum section

    Hi The most recent post in Electrical Tools and Products is actually showing the most recent post in the main electrical forum. The thread Domestic SUpply Advice is not in that forum area.
  16. timhoward

    Domestic supply advice

    I'd appreciate the wisdom of domestic sparks here... End terrace early 20thC house: Supply: I've not seen the likes of this before in a house and had concerns about the apparent single insulation so thought best to call DNO and check, better safe than sorry after all... At first despatch...
  17. timhoward

    Single insulated splitcon and KMF

    Hi I've inherited a very tight space, a KMF switch and some split-con for a sub-main to try and tidy up. It's a joyous non-restrained single insulated mess at the moment. The right solution is a different bigger switched fuse, but there isn't room. I don't think the standard KMF shroud could...
  18. timhoward

    Small galv trunking?

    Is anyone aware of any galv trunking that is smaller than 50x50. I'm drawing a blank online. I've taken over a job that's used 16mm twin and earth (along with separate 16mm CPC) as a distribution circuit. While I can arrange for most of it to be clipped direct, there's about 4m that is going to...
  19. timhoward

    Halogen Lamp heating system, diversity?

    I'm in the middle of preparing a quote for installing 12 x 3Kw and 4 x 2Kw halogen heaters in a church. The system design was provided by a specialist company. This sort of thing: The system is specified to be split into five zones to be turned on depending on occupancy. Unless the church...
  20. timhoward

    Ideas welcome - lighting over range within chimney breast

    Customer asking for lighting for range/hob as it is really gloomy at night. Issues being getting power there, and the curved profile which is more pronounced than the picture looks. I'm interested how others would approach this one. My current (only!) idea is D-Line min-trunking over tiles...

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