Emerson NT5C06D user manual DC Conductors Installation, Power shelf individual AC connection

22 Installation and start-up

Figure 5 - Power shelf individual AC connection

	POS 3 POS 2 POS 1
	L1 L2 L1 L2 L1 L2
FR GRD	6 5 4 3 2 1

When cabling the AC to the power shelf, make sure that each corresponding safety ground wire is properly connected to the terminal designated FR GND.

This grounding is proven to be sufficient, but for systems requiring an extra ground connection, an 8 AWG cable wire (color green, insulation 105°C) can be installed in addition to the existing cable and be connected to an external system ground. The new ground wire can be installed on one of the existing FR GND terminal screws located inside the power shelf with a 0.25-inch terminating ring lug. The wire must be routed along the top back of the shelf and come out the back opening on the right DC cabling side. Make sure that the wire does not interfere with the rectifier connections.

CAUTION

Do not insert fuses or operate circuit breakers (switches) until the entire system has been assembled and you have been instructed to do so in the appropriate procedure.

DC Conductors Installation

Make the connections at the power shelf prior to connecting DC leads to the battery or the distribution (load). Permanently connect the shelf to the interconnect and distribution panel using the properly-size cable by referring to Table 4. The DC output of the rectifiers is terminated on two busbars (RTN & -48 V) located on the right side of the shelf. The length of the conductors should be minimized to reduce voltage drops and interference.

UM5C06D ( 169-2071-504 ) P0831010 Standard 7.00 May 2001