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Earth Ground

Discussion in 'Security Alarms' started by Rich, Nov 20, 2004.

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  1. Rich

    Rich Guest

    On the earth ground connection of a panel. What is the size on the awg gage
    should I use? A number 12 green to a water pipe?

  2. Frank Olson

    Frank Olson Guest

    Depends on the panel. Some, I don't ground at all.

    Frank Olson
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  3. GQC

    GQC Guest

    City of Vancouver, BC wants #10 bonded to earth ground with no sharp
    bend in the conductor because most panels are connected to the telephone
    system. This is sufficient for static electricity but of course nothing
    works for lightening strikes.

    Have Fun !
  4. G. Morgan

    G. Morgan Guest

    heh, heh, heh....

    I guess you don't know where your respondent resides.
  5. Frank Olson

    Frank Olson Guest

    And what would you know about grounding anything, Mr. "Armed Central Station
  6. Mike Sokoly

    Mike Sokoly Guest

    Methinks that you may want to look in NFPA 70. (NEC or
    Commonly reffered to as National Electrical Code.)
    Also remember grounding and bonding are NOT the same thing!
  7. You are correct sir.

    Equipment Grounding Conductor size is dependent upon the size of the circuit

    NFPA 70-2002 Table 250.122 Equipment Grounding Conductor Size

    Overcurrent Device AWG Copper
    ------------------ ----------
    15 amp 14
    20 amp 12
  8. Rich

    Rich Guest

    Let me restate my question.
    The earth ground on the alarm panel is so small I can't get a # 12 under the
    screw properly.
    What is the norm in the alarm industry.

    You feed the panel from a 15 amp circuit to a 1240 transformer. With two
    number 18 to the AC in side.
    And I am trying to bond with a number 12.
    I guess I can go smaller.
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