Current Requirements; Power Connector Wiring - K-array KH4 User Manual

4. CURRENT REQUIREMENTS

The KH4 or KS4 presents a dynamic load to the AC mains, which causes the amount of current to fluctuate between quiet and loud
operating levels. Since different cables and circuit breakers heat up at varying rates, it is essential to understand the types of current
ratings and how they correspond to circuit breaker and cable specifications. The maximum continuous RMS current is the maximum
RMS current in a period of at least ten seconds. It is used to calculate the temperature increase in cables, which is used to select
cables that conform to electrical code standards. It is also used to select the cable size and gauge and the rating for slow-reacting
thermal breakers. The maximum burst RMS current is the maximum RMS current in a period of approximately one second. It is used
to select the rating for magnetic breakers. The maximum instantaneous peak current during burst is used to select the rating for
fast-reacting magnetic breakers
For best performance, the AC Cable voltage drop should not exceed 10% at 115V and 5% at 230V.
The minimum electrical service amperage required by a system of KH4 or KS4 is the sum of their maximum
continuous RMS current. We recommend allowing an additional 30% above the minimum amperage to prevent peak
voltage drops at the service entry.
KH4 and KS4 Current Rating:
115 VAC = 20A Max Continuous RMS
230 VAC = 10A Max Continuous RMS
115 VAC = I. Nom 7.2A
230 VAC = I. Nom 4.4A
5. POWER CONNECTOR WIRING CONVENTIONS
The KH4 or KS4 requires a grounded outlet. It is very important that the system be properly grounded for both safety and proper
operation.
USER'S MANUAL
CAUTION
!
The KH4 or KS4 requires a ground connection.
CAUTION
!
Do not operate the unit if the power cables are frayed or broken.
CAUTION
!
Keep all liquids away from the KH4 or KS4 amplifiers to avoid hazards from
electrical shocks.
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