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WIRING AC POWER CABLES
LEOPARD ships with a gray powerCON 20 cable mount
connector (Figure 11), rated at 20 A, for assembling AC
looping cables. The pins on the powerCON 20 cable mount
connector are labeled as follows:
• L (Line)
• N (Neutral)
• PE (Protective Earth or Ground)
SIDE
Figure 11: powerCON 20 Cable Mount Connector
How AC power cables are wired is determined by the type
of AC power distribution system used ("AC Power
Distribution" on page 13). When wiring AC power cables for
single-line systems, use one of the wiring schemes
described in Table 2 and illustrated in Figure 12:
Table 2: AC Wiring Scheme
Wire Color
U.S. / Canada
60 Hz
Black
White
Green
Green and Yellow
Black (L)
White (N)
Green (E)
U.S./Canada, 60 Hz
Figure 12: AC Wiring Scheme, illustrated
CAUTION:
When wiring AC power cables and
distribution systems, it is important to preserve
AC line polarity and connect the earth ground on both
ends of the cable. LEOPARD requires a grounded
connection. Always use a grounded outlet and plug.
It is extremely important that the system be properly
grounded to operate safely and properly. Do not
ground-lift the AC cable.
FRONT
REAR
L
Attach to the
Following
European
Terminal
50 Hz
Brown
Hot or live (L)
Blue
Neutral (N)
Protective earth /
ground (E or PE)
Brown (L)
Blue (N)
Green/
yellow (E)
Europe, 50 Hz
LEOPARD VOLTAGE REQUIREMENTS
LEOPARD operates as intended when receiving AC voltage
within the following range:
• 90–264 V AC, 50–60 Hz
If the voltage drops below 90 V, the loudspeaker uses
stored power to continue operating temporarily; the
loudspeaker powers off if the voltage does not return to its
operating range.
If the voltage rises above 275 V, the power supply could
become damaged.
PE
CAUTION:
should always operate within the required oper-
ating range, at least a few volts from the upper and
lower limits. This ensures that AC voltage variations
N
from the service entry—or peak voltage drops due to
cable runs—will not cause the loudspeaker's amplifier
to cycle on and off or cause damage to the power sup-
ply.
LEOPARD CURRENT REQUIREMENTS
Current draw for loudspeakers is dynamic and fluctuates as
operating levels change. Because different cables and
circuit breakers heat up at varying rates, it is important to
understand the following types of current ratings and how
they affect circuit breaker and cable specifications.
• Idle Current — The maximum rms current during idle
periods.
• Maximum Long-Term Continuous Current — The
maximum rms current during a period of at least
10 seconds. The maximum long-term continuous current
is used to calculate temperature increases for cables to
ensure that the size and gauge of the cables conform to
electrical code standards. The current rating is also used
to select appropriately rated, slow-reacting thermal
breakers, which are recommended for loudspeaker
power distribution. In addition, the maximum long-term
continuous current can be used to calculate the AC
looping capability for LEOPARD loudspeakers.
• Burst Current — The maximum rms current during a
period of around 1 second. The burst current is used as
a rating for magnetic breakers. It is also used for calcu-
lating the peak voltage drop in long AC cable runs
according to the following formula:
V pk (drop) = I pk x R (cable total)
• Maximum Instantaneous Peak Current — A rating for
fast-reacting magnetic breakers.
LEOPARD OPERATING INSTRUCTIONS
The power source for LEOPARD
15
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