And here is 17-166 ( I think there will still be those that argue that the supply, if metallic, does not require bonding ) I think they could have done a better job with the wording.
Panel Statement:
The change meets the submitter?s intent.
Number Eligible to Vote: 11
Ballot Results:
Affirmative: 11
____________________________________________________________
17-166 Log #347 NEC-P17 Final Action: Accept in Principle
(680.74)
____________________________________________________________
TCC Action: The Technical Correlating Committee directs that the panel
reconsider and clarify the panel action on this proposal by using
mandatory language in accordance with the NEC Style Manual. This
action will be considered by the panel as a public comment.
Submitter:
Michael J. Johnston, Plano, TX
Recommendation:
Revise text to read as follows:
680.74 Bonding. All metal piping systems and all grounded metal parts in
contact with the circulating water shall be bonded together using a copper
bonding jumper, insulated, covered, or bare, not smaller that 8 AWG solid. The
bonding jumper shall be connected to the terminal on the circulating pump
motor that is intended for this purpose. The bonding jumper shall not be
required to be connected to a double insulated circulating pump motor.
FPN: The 8 AWG or larger solid copper bonding jumper is required for
equipotential bonding in the area of the hydromasage bathtub and shall not be
required to be extended or attached to any remote panelboard, service
equipment, or any electrode.
Substantiation:
This proposed wording is an effort to provided clear direction
within this rule to users and enforcement about where the connections are
required to be made. The new FPN is consistent with the FPN to 680.26 in an
effort to inform the users of the Code, what the purpose of the bonding
required by this section is intended to accomplish. There continues to be a
significant number of enforcement officials requiring the bonding jumper
covered by this section to be run to the serving panelboard or service, and
connected to the grounding electrode. This connection is already accomplished
through the equipment grounding conductor of the circulation motor equipment
grounding conductor. The revision should provide the needed clarity and result
in more consistent application of the rules to these types of installations.
Panel Meeting Action: Accept in Principle
Revise 680.74 to read as follows:
680.74 Bonding. All metal piping systems and all grounded metal parts in
contact with the circulating water shall be bonded together using a copper
bonding jumper, insulated, covered, or bare, not smaller that 8 AWG solid. The
bonding jumper shall be connected to the terminal on the circulating pump
motor that is intended for this purpose. The bonding jumper shall not be
required to be connected to a double insulated circulating pump motor. The 8
AWG or larger solid copper bonding jumper is required for equipotential
bonding in the area of the hydromasage bathtub and shall not be required to be
extended or attached to any remote panelboard, service equipment, or any
electrode.
Panel Statement:
The change meets the submitter?s intent.
Number Eligible to Vote: 11
Ballot Results:
Affirmative: 11
Comment on Affirmative:
BLEWITT, T.: The terminal for bonding will not always be on the pump
motor. The second sentence might better read:
?The bonding jumper shall be connected to the terminal identified for this
purpose.?