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    Ceiling light question

    To be honest, if you want to complete this yourself and also learn a little, you can buy a multi-meter for about £10 these days and it won't take you very much to find out which wire is connected to what. All you have to do is check continuity from the bulb holder pin, thread and the outer...
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    Please advise me on safety of loose plug

    I feel ashamed I got that so quickly. EDIT: The joke, not the loose plug.
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    How to tighten a 50mm SWA gland with no access to locknut

    It's such a shame you're not an apprentice - this would have been the perfect opportunity to tell you the tool you need is a 'reach around' and to head to the hardware store immediately to demand one :) Feel free to hit that 'old' rating... Well done though - amazing what's possible when you...
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    Phase convertor issues

    You could try and meg the motor both cold and also when warmed up. Just to check there is nothing that is changing character on the load side.
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    Anyone use the Hylec DOC contactors and overload relays?

    Ha! What sort of fool do you take me for!? ;) Yes, I know - we also like to keep the flyback voltage away from the PLC too. The siemens s7 PLC at the core is linked to separate relay modules which energise the contactor coils. So if anything goes, it's the one of the relay modules, not the CPU...
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    SY Cable? Thoughts?

    I think, in all honesty, safety remains high due to common sense. I don't mean H&S common sense, I mean common sense of the people working in the area to realise it's a none standard situation and that extra care is required. Of course in this industry people are used to working fast in the...
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    Anyone use the Hylec DOC contactors and overload relays?

    No annoying quirks like weak screw heads on the clamps etc? I know it sounds like I'm being picky but sometimes you can pick up a simple component and in fitting, end up wishing it had been designed better..
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    Control panel feeder cable sizing

    Not sure the answer exists just yet. 30m and we don't even know the ambient temperature or how the cable is to be run. Although I'd be surprised if the final conclusion was anything less than 16mm2. 10mm seems a bit stingy, especially given the length.
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    Please advise me on safety of loose plug

    Handyman.. Landlords :rolleyes: They all seem to know a guy who can do it all, for such a reasonable price too!
  10. D

    SY Cable? Thoughts?

    Where have you worked? Yes backstage isn't too bad, but the cables still go in and out very quickly and certainly get tugged around quite a bit. On location is by for the worse, also movie sets pretty bad. I literally just came off a job where there was a 10m vertical drop. Filming at the...
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    Control panel feeder cable sizing

    With the known current requirement being around 50a, you're potentially approaching the limit of 10mm2, especially if there is the potential for it get warm. Seems like it's easiest to just fit a 63a isolator socket. Run a 16mm2 H07 from that. You can get the sockets with module space if you...
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    SY Cable? Thoughts?

    No chance, its the way it is backstage everywhere. And on location in TV, cables everywhere. Sometimes it's not so bad in the studio on longer running series but for one day get in, one day get out, it's chaotic. Safety stats however remain very high - make of that what you will. Each...
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    SY Cable? Thoughts?

    Guess that's this debate ended then. Got to say though, I see the h07 get damaged all the time too. Mostly deep nicks in the outer sheath. In fairness, in my industry 20m lengths of it are dragged around and left laid on the floor/gravel/grass whatever - and then walked over for a couple of...
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    What is the legal definition of an electrician?

    In the states, that's the way. And as a result engineers are held in similar esteem to other professionals. In the UK, everyone is an engineer. Give a bloke a bucket and tell him to empty porta-loos and before you know it he'll be claiming he's a sanitation engineer :)
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    SY Cable? Thoughts?

    Fair points. The thing is, the braid is a useful last defence if the cable is damaged (unnoticed) and then someone touches it. In general, it's also pretty tough stuff. Designed for screening, but designed to be extra tough too. Even 'fixed' machines get moved away from walls for servicing...
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    Control panel feeder cable sizing

    What sort of ambient? I take it this is in a conduit? By instinct since it's fused down anyway, I would go for 16mm2. Unless perhaps it was always likely to be relatively cool in the space and the box I was feeding into was particularly tight/awkward.
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    SY Cable? Thoughts?

    This has come up before.. What is the right thing to do? On some machines you can't rely upon RCD protection so you kind of need a cable with mechanical protection built in, and earth sheathed in case it is damaged/crushed. Always feels to me like an unfair choice, to either downgrade...
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    Anyone use the Hylec DOC contactors and overload relays?

    Type: Hylec-APL | Motor Control Gear | Contactors - https://www.hylec-apl.com/contactors & Hylec-APL | Motor Control Gear | Thermal Overload Relays - https://www.hylec-apl.com/thermal-overload-relays Got a project coming up where I need to remotely start about 20 pumps so looking at Hylec as...
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    Submersible pump testing

    Varies greatly! Mostly main circulation pumps are now surface mounted 1-3hp variable speed units, typically controlled by their own integral timer/panel. For the FX water jets we use Calpeda on-demand pressure pump sets. They're great as they maintain extremely even water pressure regardless...
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    Submersible pump testing

    I get so much useful input about general electrical regulation and method from this forum (i'm not a spark). It's nice to be able to occasionally give something back in the form of my rather niche industry experience :)
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