Recent content by Darkwood

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  1. Darkwood

    Non payment and sign off

    @oscar21 Yes, agree it's not an ideal world but the post was cautionary and advisory, the certificate is part of the work and until it is handed over there is a position for the customer or company to deny payment regardless if they are dragging their heels for other reasons, like I said it...
  2. Darkwood

    Non payment and sign off

    Let's be upfront here, although I understand your frustration here there are certain directions you should not go down, although it may work in some cases it could come back to bite you on the rear hard. You cannot use the issue of a completion certificate or similar as a bartering tool for...
  3. Darkwood

    Is it possible to put a 16mm swa on a 40a mcb protected by an rcd

    Cable calcs define your answer, is it 3m long or 300 hundred if you get my drift, your query is lacking context as to why you ask, if its simply terminal entry size then yes the mcb should accommodate a 16mm.
  4. Darkwood

    Dodgy trade pictures for your amusement! - 1 Million Views!

    He was a moderator back then, fair and decent guy, not sure where he went, sometimes life takes over hobbies.
  5. Darkwood

    Please help me out!

    Sorry but as you predicted, we cannot allow you to use our forum for surveys, we have sponsors who pay for such privileges so hopefully you can understand why I'm closing the thread and removing your link.
  6. Darkwood

    UK How do I wire an emergengy stop button to an extension cord?

    Please check the original post, its 4 yrs old and with all respect anyone asking how to connect a critical safety device is delving in a legal quagmire and the forum will not advise without further info but on a basic like this thread closed
  7. Darkwood

    Dodgy trade pictures for your amusement! - 1 Million Views!

    Wow - this thread is still getting plenty content, at this rate it will be the first thread to hit 1million views soon. :D Not bad for a Electrical trade forum I must say so myself ;)
  8. Darkwood

    Fire Alarm Relays 24V

    Just an heads up here, any expansion or addition to the control system of a Fire Alarm should be suitable for the job in hand and I don't mean just functionally operational, you are working on a safety critical system so any modifications you do should ultimately meet the same level of standards...
  9. Darkwood

    VFD -under volt at source fault

    @Gareth Blackstock Please don't take my post as any kind of attack on your intellect, I made a very good point about these kinds of controls based on your response, IE if it is crucial to maintain a set speed then it may be likely run through a closed looped system, however with the lack of...
  10. Darkwood

    VFD -under volt at source fault

    I will note here, the link you provide to a previous discussion shows much smaller motors than the VSD you have bought, you can oversize a VSD and de-rate for the motor in programming it up but you will run into operational issues if the VSD is several orders bigger than the motor it covers, why...
  11. Darkwood

    VFD -under volt at source fault

    I didn't design the machine but it clearly had a 7.5 Kw (10hp) motor fitted for its needs, unless you are utilising the machine for different purposes to its design which in turn reduce the load requirements then you will need the same torque output as before which will reflect the issues I...
  12. Darkwood

    VFD -under volt at source fault

    You cannot simply replace the 3 phase for single unless you have the available power supply, the requirements on your supply with still be as heavy on supply demand, you are trying to run a 3ph motor with a designed torque output to suit the machine off a single phase supply, this will heavily...
  13. Darkwood

    Tightening locknuts with hammer and screwdriver-dog rough or not?

    I'll play the devil's advocate, learnt it that way, always done it and crucially that contact point needs to be as tight as can be given in a fault it could be 1000+ amps, used every tool in the book and never been able to nip it up as tight as a thelmic planner and a old flat bladed screwdriver.
  14. Darkwood

    Devices Randomly turn off and back on quickly

    Enquire with your neighbours and see if they have similar issues if so it is probably a power transient issue from you power providers, if your neighbours have not noticed any issues then may be a idea to get someone to check your distribution board and associated connections for a lose common...
  15. Darkwood

    3ph help and then some!

    I hazard a guess you may have used online calculators for cable rating, it is likely these are 90c values but given your gear will only be rated for 70c you would need to use the regs tables for 70c rated and the associated values thus as others have expressed you need to size up and do the...

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