ADC PowerWorx Power Distribution - Manual (Page 15)

ADCP-80-575 • Issue 2 • December 2006
Page 9
© 2006, ADC Telecommunications, Inc.
Each input terminal block includes two pairs of 0.25-inch studs that are used for connecting the
BATT (battery –) and RTN (return +) input power cables. Each pair of studs is mounted on
0.625 inch centers and accepts various size 2-hole compression lugs. The maximum lug width is
0.62 inches.
Compression lugs for various sizes AWG wire are available as accessory items. Nuts with
captive washers are included to secure the compression lugs to the studs. The input terminal
blocks are located on the rear side of the panel.
The minimum recommended wire size for the input power wiring is #2 AWG copper wire. In
selecting wire size, follow local code referring to the ampacity guidelines provided in Appendix
A of this manual.
1.11 Output Power Connectors
Depending on the fuse configuration used, the fuse platform will have at least one, and up to
four, output power terminal blocks, located on the rear side of the platform. The number present
will depend on the fuse type and number of fuse positions. In general, there will be one terminal
block per bus for each fuse type present on that bus.
All of the output power terminal blocks are screw-down barrier terminal strips. The terminal
screws are of various sizes corresponding to the current load of the fuses. Each individual output
has two terminals, battery (BATT) and return (RTN).
Copper wire is used for output power wiring. Connections are typically made using spade-type
or ring connectors crimped onto the output wires.
Table 1 gives terminal screw size, maximum terminal width, and accepted wire gauge. In
selecting wire size, follow local code referring to the ampacity guidelines provided in Appendix
A of this manual.
*
Output terminal accepts wire sizes in the AWG range given; however, wire
size should be determined based on local requirements and practice.
Table 1. Output Power Terminal Blocks
FUSE
TYPE FUSE HOLDER
MODULE TERMINAL
SCREW SIZE MAXIMUM
TERMINAL WIDTH
LUG/AWG
RANGE
*
KLM All sizes 8-32 0.320 inch (8.128 mm) #10 to #22
TPA All sizes 8-32 0.320 inch (8.128 mm) #10 to #22
GMT 4- or 5-position 6-32 0.325 inch (8.255 mm) #12 to #22
GMT 10-position 6-32 0.260 inch (6.604 mm) #14 to #22
TPA/GMT 4 TPA fuses with 8-32 0.320 inch (8.128 mm) #10 to #22
10 GMT fuses 3-48 0.200 inch (5.080 mm) #16 to #24