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  1. rmaynard

    PLC's and MODBus

    Thanks that's a lot of info, the system uses modbus tcp, iv never really got into PLC,s and what not but it'd interesting
  2. rmaynard

    PLC's and MODBus

    The company iv been working for have recently moved into using equipment that utilizes PLC's and remote management, while im up to speed on networking and remote access the PLC amd MODBus side of it is new to me. As im installing the equipment id like a greater understanding of PLC programming...
  3. rmaynard

    Moving a circuit - certification

    Cheers, long day and bit of a blonde moment
  4. rmaynard

    Moving a circuit - certification

    I was thinking a full EIC but didn't think it fitted into any of the categories
  5. rmaynard

    Moving a circuit - certification

    I have to move a circuit from one DB to another but not sure what certificate to issue, not had to do this before, advice please rob
  6. rmaynard

    RS485 substitutes...

    I always use belden for communications on boiler and air handling systems
  7. rmaynard

    Thoughts needed - Battery back-up

    The internal relay only handles switching between ac and battery, the reasons I included a nc no contactor was to allow for automatic switching and to isolate the ups from the ccu in the event of a power cut, it has nothing to do with dno as this setup won't affect any isolation
  8. rmaynard

    Thoughts needed - Battery back-up

    Iv been thinking about a way to keep the lights on during a power cut and have come up with the following idea, it will be mainly used in domestic properties, iv included an automatic change-over, im picking up a ups today and am going to trial it at home, just wondering if anyone has any...
  9. lighting backup.jpg

    lighting backup.jpg

    • rmaynard
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  10. rmaynard

    Bank holidays

    im on call today, hopefully will have a quiet day
  11. rmaynard

    MEM3/Eaton Panel Boards

    has anyone fitted these lately? i find that the tab colours on the breakers make it look unprofessional?
  12. rmaynard

    Working in this heat

    It's unbearable mate, the travelling time on the job was 2 hours each way so even leaving at the crack of dawn meant we were there through the hottest part of the day
  13. rmaynard

    Working in this heat

    is anyone else unlucky enough to be inside working during our glorious summer we so deservedly need? iv been in a greenhouse working in 50+ heat for the last week going onto nights next week thank god
  14. IMG_0382.JPG

    IMG_0382.JPG

    • rmaynard
    • Media item
    • Comments: 0
    • Category: Electrical Videos
  15. rmaynard

    Pet Hates

    The DB schedule one drives me nuts
  16. rmaynard

    Inverter Problems

    Anyone know their way round an inverter that can give me some advice???? I had a call out yesterday to one of our bio systems as the boiler had shut down and the panel was giving an inverter comms fault, something along the lines of "bus alarm in inverter control" Now there are 3 of these...
  17. rmaynard

    Why would a relay be fitted to a heating system

    The links are in my post on the first page
  18. rmaynard

    Why would a relay be fitted to a heating system

    It may be a relay for pump run-on? Have a look here at the schematics - http://www.electriciansforums.net/central-heating-systems/25634-central-heating-schematics.html
  19. rmaynard

    Test form from a company called GAS-ELEC. Anyone heard of them?

    its just a visual and functional check of the installation, its tells you nothing of the condition, pointless waste of time and money.
  20. rmaynard

    Auger motor - apply load 0 volts?????

    Possibly the overload setting isn't set properly?

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