Kistler-Morse KM ORB - Manual (Page 10)

V. ELECTRICAL INSTALLATION
WARNING: REMOVE POWER FROM THE UNIT BEFORE INSTALLING, REMOVING, OR MAKING
ADJUSTMENTS
GENERAL SAFETY
When using electrical equipment, you should always follow basic safety precautions, including the following:
• The installation/wiring of this product must comply with all national, federal, state, municipal, and local
codes that apply.
• Properly ground the enclosure to an adequate earth ground.
• Do not modify any factory wiring. Connections should only be made to the terminals described in this
section.
• All connections to the unit must use conductors with an insulation rating of 300 V minimum, rated for
105 C, a minimum flammability rating of VW-1, and be of appropriate gauge for the voltage and current
required (see specs).
• Do not allow moisture to enter the electronics enclosure. Conduit should slope downward from the
housing. Install drip loops and seal conduit with silicone rubber product.
DISCONNECT REQUIREMENTS FOR PERMANENTLY INSTALLED EQUIPMENT
A dedicated disconnecting device (circuit breaker) must be provided for the proper installation of the unit. If
independent circuits are used for power input and main relay outputs, individual disconnects are required.
Disconnects must meet the following requirements:
• Located in close proximity to the device
• Easily accessible to the operator
• Appropriately marked as the disconnect for the device and associated circuit
• Sized appropriately to the requirements of the protected circuit (See Specifications)
PROTECTIVE EARTH GROUND
To eliminate shock hazards in the unlikely event of an internal insulation breakdown, the unit is provided with a
“protective earth” (
) lead which must be connected to earth ground ( ). In addition, the input power
ground lead must be connected to the “protective earth” ( ) terminal provided. Wire sizes must be selected
such that it can safely carry the sum total of all circuits’ maximum amperage.
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