Connecting ETI’s Snow Switch® Model LCD-8 is a simple matter. Even for a nifty bit of controller technology.
An ETI snow melting management product end user got curious. He wants to know why the LCD-8’s black and white leads are smaller than its yellow leads. The simple answer is the LCD-8 requires just a small load, about 10VA.
However, this presents an opportunity to talk about making the right connections.
Direct Heater to LCD-8
For direct LCD-8 to heater connections, consider heating cables that are 100–240 VAC, 50/60 Hz resistive load and up to 16 amps. These might include self-limiting cable, constant-wattage cable, mineral insulated (MI) cable and so forth. The supply wire between the LCD-8 and the heating cable must be able to handle a full current load: 16 amps resistive.
ETI recommends using 10 AWG or larger for the line supply and load connections. This should allow for maximum load currents. Check with your local jurisdiction regarding wire sizing for lower load currents.
When connecting the LCD-8 to an external contactor—or pump motor, motorized valve and the like—expect an inductive load up to 3 amps. The supply wire must be able to handle the (3 amps) inductive load. Here, using 18AWG for connecting is sufficient.
The LCD-8 has a dry contact closure for low volt and/or low current applications. A dry contact may be connected may be connected to the LCD-8 using 18AWG.
More Response, More Control
Pair the Snow Switch LCD–8’s configurable magnetic switch with ETI’s legendary CIT-1 aerial sensor. This helps make automatic snow melting a cost effective alternative for even the smallest applications.
For further information on the Snow Switch® Model LCD-8, review the installation and operation manual or the data sheet.
Feel free to contact Environmental Technology Inc. for additional advice using snow and ice management controls and sensors.