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NOTE: Primary overcurrent protection is provided by the building circuit breaker. This breaker
must protect against excess currents, short circuits, and earth grounding faults in accordance
with NEC 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.
• The marked input voltage of –48 VDC for a DC-powered device 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 device is a positive ground system, you must connect the positive lead to the terminal
labeled RTN, the negative lead to the terminal labeled –48 VDC, and the earth ground to the device
grounding points.
DC Power 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.
Aviso Utilize apenas fios condutores de cobre.
¡Atención! Emplee sólo conductores de cobre.
Varning! Använd endast ledare av koppar.
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