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  1. AngloSaxon

    Question re. pressures in a heating system.

    Thanks for all of the replies - most helpful! This, in conjunction with a discussion with my college lecturer, I feel a lot more satisfied with my knowledge of hydraulics in a heating system now. Cheers!
  2. AngloSaxon

    Question re. pressures in a heating system.

    I assume the answer to my following question will be fairly fundamental, but for some reason I can't seem to get my head around it... What I'm confused with is the relationship between static head, dynamic pressure and total system pressure, with specific regard to a heating system. Logic...
  3. AngloSaxon

    Voltage between phases (3Ph supply)

    Firstly, thanks for all of the replies. I did forget to mention I am in the UK so this obviously will differ from other practices, such as those in America. Scotty - as I assumed, the separation of the phases is purely for safety reasons. As you mentioned though, it would be quite difficult to...
  4. AngloSaxon

    Voltage between phases (3Ph supply)

    It would, indeed. Some rooms require several circuits. What I would like to know is why I need to keep each phase separate within the rooms. Say I'm supplying a computer suite with 3No. ring circuits, they would all need to be from either L1, L2 or L3. Why can't they be mixed? For instance: one...
  5. AngloSaxon

    Voltage between phases (3Ph supply)

    I'm sure the question I'm about to ask has a very simple answer, yet it's one that I'm not aware of! When designing circuits from a 3-phase dis bd. why are single phase loads separated between rooms/areas? I understand there is a p.d. between the line conductors of 400V, but why must they be...

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