Recent content by bigbalu

  1. bigbalu

    The drawbacks of been a sparks!

    Some years ago, working as an agency spark for a large electrical contracting company on a certain northern airport during a major expansion program, it was necessary to divert all the telemetry cabling between two H.V. substations on part of a H.V. ring as they were laid in ducts crossing an...
  2. bigbalu

    Retired since 2013, JIB ECS Gold Card Holder. Mostly worked on industrial and petro/chem...

    Retired since 2013, JIB ECS Gold Card Holder. Mostly worked on industrial and petro/chem installation and maintenance.
  3. bigbalu

    3 position switch ; ON-OFF-ON

    Use a 2 gang 2way switch, switch A to act as a main switch feeding switch B common, one side of switch B feeds PIR, other side overrides PIR in parrallel and switches lights directly. You would be able to 1. Switch off everything and inhibit PIR from switching on in low light. 2. Switch on...
  4. bigbalu

    Running additional neutral to 3 phase panel.

    Using the supplied details, I think the simplest answer would be to use a 415/230 volt transformer of an adequate rating, fuse both phases on the primary side and a fuse for the line on the output side with the neutral connected to a suitable earthing point. Hope this helps
  5. bigbalu

    Pleased to introduce myself

    Thanks for the very warm welcome, I hope I will be able to make some constructive and helpful posts in the future.
  6. bigbalu

    Pleased to introduce myself

    Hi to all fellow members,I have been lurking here for some time now reading other members' posts with interest, however this is my first post. I am now in my sixties and have been a spark all my working life, nearly 50 years now (including an apprenticeship), mostly contracting in the...

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