Connect with us

borrowed neutral

Discussion in 'Electrical Engineering' started by steven.allsopp, Nov 2, 2003.

Scroll to continue with content
  1. what is borrowed neutral and is it dangerous?
  2. no such thing in the electrical industry....however, there is a 'shared
    neutral'. Big difference.

    It is only dangerous to "Bubba", who is confused with anything other that 2
    wire romex.
  3. John Gilmer

    John Gilmer Guest

    Maybe someone "invented" the term to describe a load connected to a HOT in
    one cable and a NEUTRAL in another cable.

    Slight OT: The air handler of my heatpump runs off 240 volts and nothing
    requires 120. BUT someone decided to have the condensate pump run off the
    same circuit but he needed a neutral for the 120 volt pump. No problem: he
    just used the ground! (Yes, it was a bad idea from many prospectives!
    The only protection for the #16 wire to the pump was a 60 amp breaker!)
  4. Nukie Poo

    Nukie Poo Guest

    That someone was most likely the HVAC installer. I see that crap all the
    time. 240V condensate pumps are readily available, but with a heat pump,
    you'd need to employ a tap feeding a disconnect w/OCD or a separate circuit.
  5. sQuick

    sQuick Guest

    Maybe this is just a UK term? I've heard it
    used very often.

    A borrowed neutral is where a neutral is used from
    another circuit.

    This makes isolation and fault finding difficult and also
    can be dangerous where the neutral is 'borrowed' from
    a circuit of lower current carrying capacity.

  6. Paul

    Paul Guest

    It is also dangerous if you test i.e. a light fitting dead, split the two
    neural wires within and find one live through another lamp fitting further
    It did hurt. (Voice of experience!!)

  7. s

    s Guest

    lol,done it many times!!
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day