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You can connect multiple ThermoSlab heat cables by connecting their lead wires in parallel. Each ThermoSlab heat cable comes with a 20' lead wire and the lead wires must be connected together in parallel at the electrical junction box/thermostat (white to white, black to black, etc.)
We recommend connecting to a dedicated electrical circuit. The electrical circuit must be sized so that the total Amps of all ThermoSlab heat cables do not exceed the Amp capacity of the circuit.
It is recommended to install a programmable thermostat so that the thermostat can automatically account for the time delay between energizing the slab and warming the floor/room. An added benefit is that a GFCI is built into the programmable thermostat.
Faulty sensors are rare but difficult to replace once imbedded. It is recommended to install a second sensor as a backup or install a flexible conduit or tube that will allow you to slide the sensor in and out for replacement. However, do not connect the redundant sensor. Only connect one sensor to the thermostat at a time. Bring the redundant sensor to the thermostat box in the event it is needed in the future. Install sensors according to the installation manual.
ThermoSlab cable must be laid out with even spacing over the entire area to be heated.
If rebar or wire mesh is available, ThermoSlab cable can be attached directly to the rebar or wire mesh using tie wraps.
To ensure an accurate and easy method of installing on sand beds or intermediate pours where rebar or wire mesh is not available, it is recommended to use Thermosoft cable strapping. Install cable strapping according to the installation manual spaced 3 feet apart. Secure the heating cable to the cable strapping at the correct center-to-center distance.
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