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Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.8.5153
Section 2 • Installation Recommendations
Grounding
• Continuous grounds must be run from the util-
ity ground to the Vission 20/20, see Figure 2-3.
Grounding.
• Grounds must be copper or aluminum wire.
• Never use conduit grounds.
Mixing Voltages
• Separate different voltages from each other and
separate AC from DC, see Figure 2-4. Mixed Voltage
Wiring.
Figure 2-4. Mixed Voltage Wiring
Each voltage level must be run in separate conduit:
• 460 VAC
• 230 VAC
• 120 VAC
• 24 VAC
DC signals
• If your installation site has wire-ways or conduit trays,
dividers must be installed between the different
voltages.
Figure 2-3. Ground Wiring