fmtjfw
Senior Member
- Location
- Fairmont, WV, USA
Section/Paragraph: 647.3 General.
Deleted Text
647.3 General. Use of a separately derived 120-volt single-phase 3-wire system with 60 volts on each of two ungrounded conductors to a grounded neutral conductor system bonding jumper to ground shall be permitted for the purpose of reducing objectionable noise in sensitive electronic equipment locations, provided the following conditions apply:
Substantiation:
The center tap of the secondary of the transformer is not a neutral because it is not a normally current carrying conductor.
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Deleted Text
647.3 General. Use of a separately derived 120-volt single-phase 3-wire system with 60 volts on each of two ungrounded conductors to a grounded neutral conductor system bonding jumper to ground shall be permitted for the purpose of reducing objectionable noise in sensitive electronic equipment locations, provided the following conditions apply:
Substantiation:
The center tap of the secondary of the transformer is not a neutral because it is not a normally current carrying conductor.
insert delete