Juniper Networks Cabling the E-Series Router for Power, Cable/Wire From ERX-7xx/14xx models

Cabling the E-Series Router for Power E-Series Routers

6-9

Cabling the E-Series 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. There are three main tasks involved:

1Switch all E-series router power switches to OFF.

Caution: Switches may have inadvertently flipped to ON during shipping and installation.

2Connect 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 E-series router.

3Connect the power cables (AC or DC) to the power input modules.

See Chapter 11, System Specifications for the power requirements for the E-series router. Table 6-3identifies the power input module cabling requirements, and Figure 6-4shows the main components of a power input module.

Table 6-3Power input module cables/wires needed

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

a. DC model only b. AC model only