Use the 500 ft.
T stat wire size.
The n gauge wire diameter d n in millimeters mm is equal to 0 127mm times 92 raised to the power of 36 minus gauge.
If you don t know your system type place this wire into the w terminal.
If the wire is not long enough for a proper termination at the new thermostat then take a small piece of thermostat wire about 6 inches long and use a small wire appropriate for 18 solid wire and wire nut the short piece to the 6 inch wire.
For shorter runs use 20 gauge.
Thermostat wire connections 5 wire blue black red white yellow green thermostat wire connections 6 wire red white blue yellow green orange wires thermostat wire connections 8 wire black red white yellow green orange brown blue.
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Wire gauge calculations wire diameter calculations.
Sta kon terminals made of high conductivity copper with corrosion resistant plating include marked stud and wire sizes a long chamfered barrel to eliminate missed crimps a deep internal serration to produce a larger contact area and selective annealing to leave the barrel soft for crimping while the tongue remains strong.
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D n in 0 005 in 92 36 n 39.
Southwire 250 ft 18 8 thermostat wire by the roll.
A thermostat wire uses low voltage signals to transfer data.
Overall cable diameter mils approx.
Locate any unconnected wire labeled w or w1.
Wire helps transmit data over a longer distance.
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Thermostat cable model 2501 42 00 96 34 96 34.
The n gauge wire diameter d n in inches in is equal to 0 005in times 92 raised to the power of 36 minus gauge number n divided by 39.
The larger 18 ga.
18 3 thermostat wire to wire your thermostat system.
American wire gauge size calculator and chart.
If in the previous step you identified an o b or o b wire that s connecting to the o b terminal and have a separate w wire place this wire into the w2 terminal.
18 gauge thermostat wire solid size awg number of conductors conductor colors jacket thickness nom.
18 gauge thermostat wire is recommended for any distances up to 250 feet.
The 18 gauge wire features copper conductor construction.
Item 539961 model 65676944.
If you have a heat pump system place it into the o b terminal.
Net weight lbs 1000 ft 18 2 red white 14 146 16 18 3 red white green 14 155 24 18 4 red white green blue 14 169 31 18 5 red white green blue yellow 15 178 37 18 6 red white.
18 3 thermostat wire to use the 500 ft.
Over a long distance the signals can become to weak to get a reading.