Chapter 2: Installation
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WARNING | FOR CENTRALIZED DC POWER |
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This unit might have more than one power input. To |
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reduce the risk of electric shock, disconnect all power | CONNECTION, INSTALL ONLY IN | - | |
inputs before servicing unit. | A RESTRICTED AREA. |
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Figure 43. Inserting Wires into a DC Terminal Block
6.Connect the +48 VDC (RTN) feed wire to the terminal block marked + (plus).
7.Connect the -48 VDC feed wire to the terminal block marked - (minus).
Warning: Check to see if there are any exposed copper strands coming from the installed wires. When this installation is done correctly there should be no exposed copper wire strands extending from the terminal block. Any exposed wiring can con- duct harmful levels of electricity to persons touching the wires.
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8.Secure the tray cable near the rack framework using multiple cable ties to minimize the chance of the connections being disturbed by casual contact with the wiring. Use at least four cable ties, separated four inches apart. Locate the first one within six inches of the terminal block.
This system will work with a positive grounded or negative grounded DC system. E13
9.Ensure that the circuit breaker is in the OFF position.
10.Connect the supply-cable wires to the circuit breaker.
11.Energize the circuit breaker.
12.Turn the power switch to the ON position.
If you installed an optional redundant power supply, repeat this procedure to attach DC wires to the second terminal block.
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