Juniper SRX 5800, Hardware Manual

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feeds derived from feed B. This configuration provides the commonly deployed A/B feed redundancy for
the system.
CAUTION: You must ensure that power connections maintain the proper polarity.
The power source cables might be labeled (+) and (–) to indicate their polarity. There
is no standard color coding for DC power cables. The color coding used by the external
DC power source at your site determines the color coding for the leads on the power
cables that attach to the terminal studs on each power supply.
WARNING: For field-wiring connections, use copper conductors only.
CAUTION: Power cords and cables must not block access to device components or
drape where people could trip on them.
SRX5800 Services Gateway Chassis Grounding Point Specifications
WARNING: To meet safety and electromagnetic interference (EMI) requirements and
to ensure proper operation, you must properly ground the services gateway chassis
before connecting power. See “Grounding the SRX5800 Services Gateway” on page 239
for instructions.
CAUTION: Before services gateway installation begins, a licensed electrician must
attach cable lugs to the grounding and power cables that you supply. A cable with an
incorrectly attached lug can damage the services gateway.
The services gateway chassis has two grounding points along the lower edge of the back panel. Each
grounding point consists of two threaded holes spaced 0.625-in. (15.86-mm) apart (see
Figure 23 on page 67 ). The left grounding point fits M6 screws (European), and the right grounding point
fits UNC 1/4–20 screws (American). The accessory box shipped with the services gateway includes the
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