SOUTHWIRE Thermostat Wire: 18 AWG Conductor Size, 7 Conductors, 250 ft Overall Lg
SKU 3G-OTH-47945
Need installation or engineering help?
Ask a question
Frequently Asked Questions
What is Southwire thermostat wire used for?
Southwire thermostat wire connects HVAC thermostats to heating, cooling, and ventilation equipment. The 18 AWG, 7-conductor design supports multi-stage systems, heat pumps, and zone controls in residential and light commercial buildings.
What are the specifications of Southwire 553076607 thermostat wire?
This Southwire thermostat wire has 18 AWG conductors, 7 conductors, 250 ft overall length, and a 150 V voltage rating. It is nonplenum-rated, suitable for standard indoor installations where plenum-rated cable is not required.
Where to buy Southwire thermostat wire worldwide?
3G Electric supplies Southwire thermostat wire worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 7-conductor, 250 ft cable.
How to install Southwire thermostat wire?
Run the wire from thermostat to HVAC equipment, maintaining at least 18 AWG for voltage drop. Strip insulation carefully, connect each conductor to matching terminals, and avoid sharp bends. Use a C-wire for continuous power to smart thermostats.
Used in
Common applications for SOUTHWIRESOUTHWIRE Products
3G Electric supplies SOUTHWIRE nonplenum-rated thermostat wires. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















