Copper Conductors Warning - Juniper Internet Router M160 Hardware Manual

M160 Internet Router Hardware Guide
NOTE: Primary overcurrent protection is provided by the building circuit breaker.
This breaker should protect against excess currents, short circuits, and earth faults
in accordance with NEC ANSI/NFPA70.

Copper Conductors Warning

WARNING: Use copper conductors only.
Waarschuwing Gebruik alleen koperen geleiders.
Varoitus Käytä vain kuparijohtimia.
Attention Utilisez uniquement des conducteurs en cuivre.
Warnung Verwenden Sie ausschließlich Kupferleiter.
Avvertenza Usate unicamente dei conduttori di rame.
Advarsel Bruk bare kobberledninger.
230
Safety Guidelines and Warnings
ground wire or conduit to a solid office (earth) ground. A closed loop ring is
recommended for terminating the ground conductor at the ground stud.
Run two wires from the circuit breaker box to a source of 48 VDC. Use
appropriate gauge wire to handle up to 90 A.
You must connect only to a DC power source for which the output complies
with the safety extra low-voltage (SELV) requirements of UL 1950, CSA C22.2
No. 950-95, EN 60950, and IEC 60950 to a DC-input terminal block.
A DC-powered router that is equipped with a DC terminal block is intended
only for installation in a restricted access location. In the United States, a
restricted access area is one in accordance with Articles 110-16, 110-17, and
110-18 of the National Electrical Code ANSI/NFPA 70.
Ensure that the polarity of the DC input wiring is correct. Under certain
conditions, connections with reversed polarity might trip the primary circuit
breaker or damage the equipment.
For personal safety, connect the green and yellow wire to safety (earth) ground
at both the router and the supply side of the DC wiring.
The marked input voltage of –48 VDC for DC-powered routers is the nominal
voltage associated with the battery circuit, and any higher voltages are only to
be associated with float voltages for the charging function.
Because the router is a positive ground system, you must connect the positive
lead to the terminal labeled
, and the earth ground to the chassis grounding points.
–48V
, the negative lead to the terminal labeled
RTN(+)