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  1. Marvo

    Two core wiring with the same sleeve colour

    Apart from ripcord and maybe a speciality flat elevator type ribbon cable I've also never seen a cable with two identical blue wires. I highly doubt such a cable would be available unless it was a special order. I've seen cables that contain more than 1 black wires with numbers on them but the...
  2. Marvo

    Fire rated or not

    The manufacturers website has pretty extensive documentation that's of a decent looking standard on all their product listing pages including installation, safety and fire rating test pdf's. It's an extensive and legit looking website and the documentation is well written and well presented and...
  3. Marvo

    Fridge Freezer no longer cooling after being disconnected for a few weeks...

    Those little hermetic compressors can be difficult to tell if they're running or not. Maybe try switching it off for 3 or 4 minutes then put your hand on the compressor and apply power again. See if it feels like it's starting or running and see if it makes any click noises withing the first 20...
  4. Marvo

    Antique motor wiring

    Lol, you gotta love those old motors. It's 1/4HP which is about 186 watts shaft power and it's rated at 3 Amps FLA which is about 690 Watts of electrical power meaning its efficiency is around 0.27. The resistance readings are a bit confusing. Do you know if it has an internal centrifugal...
  5. Marvo

    UK Safe isolation

    Yep, agree that it's acceptable if it's a competent person. I'd suggest a quick risk assessment and maybe a writen or even verbal method statement or discussion to make sure everyones on the same page.
  6. Marvo

    UK High PSCC and strange readings - help much appreciated

    Glad you got to the bottom of it. You'll probably find a nice new set of silicone test leads sorts it out, if not maybe send it in for calibration and see if they can fix it. Sometimes the female socket that the leads plug into breaks the solder joint that connects it to the circuit board its...
  7. Marvo

    UK High PSCC and strange readings - help much appreciated

    I'm not sure if manual calculation is an option in the UK regs but usually if I get a really low Ze measurement and there's questions about the fault current ratings of the switchgear I'd just manually calculate the PEFC / PSCC by determining the supply cable CSA and measuring or estimating...
  8. Marvo

    UK High PSCC and strange readings - help much appreciated

    As per Mr Westy, if it's a PME'd TN C S arrangement the earth fault loop should test identical or almost identical to the short circuit loop. The fact your results are so far apart means either your test equipment is faulty, your test technique is flawed or the E-N bond link in the service head...
  9. Marvo

    What do you use to cut and strip tails or chunkier cables?

    Any of the options you mention will go through a 10mm Flat Twin cable or a 25mm meter tail like a knife through butter regardless how small your hands are. If I'm working with lots of large CSA stranded battery bank wiring (similar to your UK meter tails I'm guessing) my go to tool is an NWS...
  10. Marvo

    Hi there, any chance you could......

    The multitude of builders we've worked for over the years have always been good payers. As long as we've got an official works order we invariably get paid after official handover is signed off by the architect or consultant. I guess with small domestic builders it might be a different story.
  11. Marvo

    Hi there, any chance you could......

    To be honest if he was doing this and being transparent about it I wouldn't have a problem with it. He's arguably adding value by managing the project turnkey and even by selling the services to the customer and he would also be incurring management and admin costs so marking up wouldn't be...
  12. Marvo

    Hi there, any chance you could......

    Are your quotes too detailed? Is the customer using your quotes as a template for other contractors to quote from or to work from? That's something I've encountered in the past....
  13. Marvo

    Has the world gone crazy, tool prices

    Completely unnecessary but I guess it's his money so he can spend it how he likes. Could have bought high quality well made alternatives at a quarter of the price but maybe not enough wow factor for his liking. I'm also guilty of paying over the odds for the most popular 3 or 4 screwdrivers and...
  14. Marvo

    Julio Herrera Query on CCTV System Integration

    Exactly as James mentioned but he didn't point out that Integration with AI requires dynamic symbiotic engagement and often results in a lower level of granulation than expected. Look....bottom line is you're always going to struggle when it comes to onboarding mission critical AI into a...
  15. Marvo

    Requirements to Install EV Chargers

    Do you have a link to it please or is it something you must purchase?
  16. Marvo

    Voltage testers - a basic question

    That's also the way I do it, I prove the integrity of the circuit first before proving the state of the supply on it but I didn't want to suggest it in case that's not the way they teach it nowadays.
  17. Marvo

    Voltage testers - a basic question

    To put it in laymans terms a voltage test is always telling you the voltage difference between two points. A live wire is only live because its voltage is 230v different to the actual ground you're standing on or to the neutral that is usually connected to the ground you're standing on. In...
  18. Marvo

    3AMP socket?

    i'd guess someone has labelled it as 3 Amp because the cable supplying it is undersized or maybe it's supplied from a light circuit. It's not possible to determine safety of the outlet just from the picture but I'd suggest you don't use it.
  19. Marvo

    Appliance power problem

    Good job it doesn't need an EICR :)
  20. Marvo

    Appliance power problem

    Before you load up the parts cannon try remaking all the solder joints on the through hole components with a little bit of fresh solder. Some of them look suspect especially around where the AC IN and LOAD sockets are.

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