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ADCP-80-353 • Issue 2 • August 2002 • Section 2: Installation
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3.3.3
Office Power To Bay Wiring
The power to the bay fuse panel is supplied, through overhead power supply feeders, from the
Battery Distribution Fuse Bay (BDFB). The local Detail Power Engineer must specify the
power feeder conductor size. Each site has many variables that must be considered when
determining the size of power supply feeders.
• Local Electrical Codes
• Distance between the Battery Distribution Fuse Bay (BDFB) and the farthest bay powered.
• Maximum power load on each bay.
• Number of bays to be powered.
• Allowable voltage drop of power cables between BDFB and equipment bay.
Connect the office power to the bay fuse panel as follows:
Warning: To avoid the danger of shock, burns or fire, REMOVE power from working power
supply circuits before making any connections. If establishing a new power supply circuit do
NOT install the fuse until all connections are completed and tested.
1. Determine the conductor length from the overhead power supply feeders to the fuse panel
power terminals.
2. Using 14 AWG (minimum size) wire, make parallel connections at the overhead supply
feeders for –48 Vdc and Ground. (Number 6 compression lug is provided with DSX-
FP20F fuse panel.)
3. Complete the connection (step 2) to the –48 V (NEG(–)BUS) and ground (POS(+)BUS)
terminals on the fuse panel. See
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© 2002, ADC Telecommunications, Inc.
Figure 2-6. DSX-4U Chassis with Circuit Modules Installed (Rear View)
Figure
2-7.
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8661-A
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