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Cabling the Router for Power

After you have correctly cabled the modules and I/O modules, you must attach grounding and electrical wires before you attempt system power-up. Three main tasks are involved:

Switch all router power switches to OFF.

Caution: Switches may have inadvertently flipped to ON during shipping and installation.
Connect the grounding wires to the chassis.

Warning: Always connect the grounding wires first (before connecting the power cables) and disconnect them last when installing or servicing the router.
Connect the power cables (AC or DC) to the power input modules.

See System Specifications for the power requirements for ERX routers. Table 9 identifies the power input module cabling requirements, and Figure 26 shows the main components of a power input module.

Table 9: Power Input Module Cables and Wires Needed

Cable/Wire	From	To
ERX-14xx models
One 10-AWG ground wire	Power input module ground terminal	Termination ground
Two 8-AWG wire leads	Power input module Power A –48 VDC and RTN leads	Appropriate leads on power source No.1
Two 8-AWG wire leads	Power input module Power B –48 VDC and RTN leads	Appropriate leads on power source No.2
ERX-7xx models
One 10-AWG ground wire	Power input module ground terminal	Termination ground
Two 12-AWG wire leads	Power input module Power A –48 VDC and RTN leads	Appropriate leads on power source No.1
Two 12-AWG wire leads	Power input module Power B –48 VDC and RTN leads	Appropriate leads on power source No.2
ERX-310 router
One 10-AWG ground wire	Power input module ground terminal	Termination ground
Two 14-AWG wire leads (DC model only)	Power input module Power A –48 VDC and RTN leads	Appropriate leads on power source No.1
Two 14-AWG wire leads (DC model only)	Power input module Power B –48 VDC and RTN leads	Appropriate leads on power source No.2
One AC power cord (AC model only)	Power input module AC power IEC receptacle	Appropriate AC power supply

Figure 26: Power Input Module for ERX-14xx Models

Image g013752.gif

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