Kistler-Morse ORB - Electrical Installation; General Safety; Disconnect Requirements for Permanently Installed Equipment; Protective Earth Ground

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ammability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Specications)
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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97-1167-01 Rev. J
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