Juniper MX2020 Hardware Manual page 218

MX2020 3D Universal Edge Router Hardware Guide
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CAUTION: You must ensure that power connections maintain the proper
polarity. The power source cables might be labeled
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 PDM.
MX2020 DC Power Supply Module Description on page 96
MX2020 DC Power Distribution Module Description on page 94
MX2020 DC Power Electrical Safety Guidelines on page 585
MX2020 DC Power Distribution Description on page 177
Connecting an MX2020 DC Power Distribution Module Cable on page 268
and to indicate
(+) (–)
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