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High Performance Current Sensing for Automation

High Performance
Current Sensing for Automation

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Snow Melt Systems

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Snow Melt Systems

This application is similar to the Heat Trace System described previously, however Snow Melt Systemsthere is a wider choice of generally lower-cost cable, which is often attached directly to roofs and gutters, or imbedded in sidewalks, steps, driveways or car parks. Although this type of installation is sometimes exempt from the code requiring ground fault protection, it is strongly recommended. The simple installation of an NK Technologies’ Ground Fault Sensor will provide an early warning of trouble. Inevitably cable insulation deteriorates with age and stresses such as hydraulic action from ground water, resulting in current leakage to ground. This may create a hazardous situation for people or animals in contact with the installation; it will waste power and cause a significant drop in the heat output and the overall efficiency and thus effectiveness of the system. The circuit may continue to function, but snow and ice could continue to accumulate. If circuit interruption is required NK’s Ground Fault Sensor should be installed in conjunction with a contactor, shunt trip breaker or other approved circuit interruption device.

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