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Wiring for DC-Input Power
Wiring for DC-Input Power
Warning:
• Ensure that all power is OFF from the DC circuit. Locate the circuit breaker on the panel board
that services the DC circuit. Switch the circuit breaker to the OFF position. For extra safety, you
can tape the handle of the circuit breaker in the OFF position.
• When wiring the unit, the ground connection must always be made first and disconnected last.
• The proper wiring sequence is ground/negative to ground/negative and positive/return to
positive/return.
Use the following American wire gauge (AWG) specifications for power connections:
•
•
DC Input Terminal Block Wiring
The DC power supply cables attach to the power supply terminal studs.
Figure 14
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Not less than #14 AWG and not more than #12 AWG for the -48 and RTN
#14 AWG for the ground wire
display DC-input terminal block safety cover and wiring views.
Figure 12: Removing the DC Terminal Block Safety Cover
SR10029
Figure
12,
Figure
13, and
7450 ESS-1
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