Juniper SRX5800 Hardware Manual page 364

CAUTION:
allow the fastened loops of a cable to dangle, which stresses the cable at the
fastening point.
CAUTION:
An arc smaller than a few inches in diameter can damage the cable and cause
problems that are difficult to diagnose.
13. Connect the power cables to the chassis.
14. Power on the services gateway.
15. Verify that the SPC is functioning correctly by issuing the show chassis fpc and show chassis fpc
pic-status commands.
Do not let fiber-optic cables hang free from the connector. Do not
Avoid bending a fiber-optic cable beyond its minimum bend radius.
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