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Power mains question: wire gauge

Discussion in 'Misc Electronics' started by DaveC, Dec 28, 2012.

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  1. Guest

    I thought about using PEX, though wasn't sure if it could take the
    pressure. A faulty regulator can easily dump 120-200lbs into the
    system. At least it wouldn't shatter like PVC, though. It's an idea,
    though I think I already have about half the copper I need for the
    job. ..though that probably means I'm short 3/4. ;-)

    My other house has PEX for its water supply. I have no idea if the
    house is "normal" but I don't like the stuff. Only one of the outside
    faucets has any volume and the inside faucets are all weak. It seems
    there is a lot more pressure/volume lost in the distribution than
    there is in either the copper systems I've had in the past or the PVC
    in the new place. One big advantage of PEX for water is temperature
    stability (someone flushing a john doesn't scald the person taking a
    shower). Another is the manifold allows one to turn off individual
    appliances. It's handy for turning off the silcocks in the Winter,
    though I added ball valves to the distribution system (copper) in my
    VT house to accomplish pretty much the same thing.
  2. Guest

    Depending on the result, it might be something to worry about. With
    copper, not so much. PEX probably not, either, but it's failure mode
    would be important. PVC, absolutely!
    I've never seen anything less than 3/4" and 1/2" in homes. Sure, I've
    seen problems with temperature regulation when they cheaped out but
    never a supply problem. Even 1/2" was plenty for a hose bib or a
    kitchen sink. ISTM, that PEX has a *lot* more resistance than copper.
  3. rickman

    rickman Guest

    The Romans used lead to carry their water and as a result some developed
    lead poisoning. Plastic is the new lead.

  4. Guest

    Utter nonsense. I'd expect as much, though.
  5. Jasen Betts

    Jasen Betts Guest

    looking on the internet I see lots of installations with what appears
    to be very fine PEX tubing.
  6. rickman

    rickman Guest

    Just to be sure, I pulled out an ohm meter to check it and yup, you're
    right, PEX has a *lot* more resistance than copper.

  7. Guest

    There are NO straight runs, either. Anyway, from my experience, it
    sucks for water distribution. I'm not all that happy with the PVC I
    have now, either. Copper is so easy...
  8. Guest

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