Installation Recommendations

Proper Wire Sizing

As a minimum, always size wire gauges as specified by the National Electrical Code (NEC) for electronic con- trol devices.

For improved noise immunity, install one size larger wire gauge than the NEC requirement to assure ample current-carrying capability

Never undersize wire gauges.

Voltage Source

Transformers block a large percentage of Electro-Magnetic Interference (EMI).

The Vilter Vission 20/20 should be isolated with its own control transformer, for the most reliable operation.

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Emerson VISSION 20/20 service manual Proper Wire Sizing, Voltage Source