PB 1.1-2007
Page 12
6.7 LINE AND BRANCH CONDUCTORS
Connect Line and Branch Conductors
6.7.1 Conductors
Use care in stripping insulation from conductors so as not to nick or ring the conductor. For aluminum,
clean all oxide from the stripped portion and apply an antioxide compound.
6.7.1.1 Wiring Gutters
Distribute and arrange conductors neatly in the wiring gutters. (See Section 5.)
6.7.1.2 Types and Temperature Ratings
Care should be exercised to ensure that the types and temperature ratings of conductors being installed
in the panelboard are suitable for use with the terminals, which have been provided.
6.7.1.3 Tighten All Terminals
Use the manufacturer's torque values. (See 7.1).
6.8 PANELBOARD GROUNDING
Ground the panelboard cabinet in accordance with 4.12. (See Section 408.40 of the National Electrical
Code.)
6.8.1 Equipment Grounding Conductors
Where separate equipment grounding conductors are used, prepare equipment grounding conductors in
accordance with 6.7.1 and connect them to the equipment grounding terminal bar. Check to be sure that the
terminal bar is securely bonded to the cabinet or panelboard frame and that it is not connected to the neutral
bar except at service equipment (as permitted in Section 250.28 of the National Electrical Code) or at
separately derived systems (as permitted in Section 250.30 of the National Electrical Code).
NOTE—An equipment grounding terminal bar is not always required. For example, when a properly installed metallic raceway is used as
the equipment grounding path or when the grounded conductor terminals (neutral bar) complies with the conditions of the last sentence
of Section 408.40 of the National Electrical Code.
6.9 PROPER TYPE OR CLASS AND RATING
When installing circuit breakers or fuses, ensure that they are of the proper type or class and rating.
6.10 DEBRIS
Clean the cabinet of all debris, which has accumulated during the panelboard installation (see 6.4.1).
6.11 STEPS IN SECTION 7
If the job is complete, perform the steps in Section 7 and then install the cabinet front (see Section 8).
© Copyright 2007 by the National Electrical Manufacturers Association.
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