{"product_id":"thermostat-copper-wire-18-8-brown-100ft-durable-thermostat-cable","title":"Thermostat Copper Wire 18-8 Brown 100ft - Durable Thermostat Cable","description":"\u003cp\u003eIn this review of the Thermostat Copper Wire (18-8 Brown, 100ft) the bottom line is simple: this is a dependable, code-compliant thermostat cable for HVAC, alarm and low-voltage control work. The reviewer found it best for installers and DIYers who need a full 100 ft spool of color-coded cable with a robust PVC jacket and clear temperature and voltage ratings. The cable's UL listed Type CL2 and ETL compliance, along with a -20C to 60C temperature range and 150 V rating, make it a practical choice for indoor thermostat and signal wiring where durability and safety approvals matter.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUL Listed Type CL2:\u003c\/strong\u003e Provides confidence the cable meets common building and low-voltage installation standards for in-wall use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e Rated from -20C to +60C so the cable is suitable for most indoor HVAC and control environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150 V Rating:\u003c\/strong\u003e Supports typical thermostat and signal voltages without overrating or unnecessary bulk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePVC Outer Jacket:\u003c\/strong\u003e A heat, moisture and sunlight resistant PVC jacket adds durability for runs through basements, attics and service spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulation Options:\u003c\/strong\u003e PVC or polypropylene insulation with color-coded conductors simplifies identification during installation and termination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100 ft Length:\u003c\/strong\u003e A full spool covers standard installs without needing to splice, saving time and preserving signal integrity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis cable is aimed at homeowners doing thermostat upgrades, HVAC technicians wiring controls, and low-voltage installers working on intercoms, doorbells, or annunciator systems. It is especially useful when a long, continuous run is required and compliance with UL and NEC Article 725 is desirable.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for high-voltage mains wiring, outdoor direct burial runs, or situations that require specialized shielded cable for audio or sensitive signal isolation; in those cases a purpose-designed shielded or outdoor-rated product should be chosen.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWell-made conductors and proper gauge make stripping and crimping straightforward for clean terminations.\u003c\/li\u003e\n\u003cli\u003eUL 13, CL2 and ETL compliance mean the cable meets recognized safety and installation standards.\u003c\/li\u003e\n\u003cli\u003eDurable brown PVC jacket resists heat, moisture and sunlight for added longevity in common service locations.\u003c\/li\u003e\n\u003cli\u003e100 ft length and color-coded insulation offer good value and ease of identification during hookup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot intended for direct burial or outdoor-only installations without additional protection, limiting some exterior uses.\u003c\/li\u003e\n\u003cli\u003eBrown jacket is practical but may be harder to hide in light-colored finishes compared with white alternatives.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eThermostat Cable, UL Listed Type CL2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGauge\/Configuration\u003c\/td\u003e\n\u003ctd\u003e18-8 copper conductors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e100 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Rating\u003c\/td\u003e\n\u003ctd\u003e-20C to +60C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e150 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation\u003c\/td\u003e\n\u003ctd\u003ePVC or polypropylene, color-coded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJacket\u003c\/td\u003e\n\u003ctd\u003eBrown PVC, heat\/moisture\/sunlight resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Thermostat Copper Wire 18-8 Brown 100ft is a practical, code-aware choice for thermostat control, HVAC and low-voltage signal wiring. Its combination of UL listing, ETL compliance, durable PVC jacket and full spool length makes it good value for installers and homeowners who need a reliable, easy-to-install cable for indoor runs.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this cable rated for in-wall installation?\u003c\/strong\u003e\u003cbr\u003eYes, it is UL Listed Type CL2 and meets NEC Article 725 requirements for many in-wall low-voltage installations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this be used outdoors?\u003c\/strong\u003e\u003cbr\u003eThe PVC jacket resists moisture and sunlight, but the cable is not specified for direct burial or permanent outdoor exposure without additional conduit or protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this work with smart thermostats?\u003c\/strong\u003e\u003cbr\u003eYes, the 18-8 conductors and 150 V rating are suitable for typical smart thermostat wiring and HVAC control systems.\u003c\/p\u003e","brand":"Cableague","offers":[{"title":"Default Title","offer_id":48187321680091,"sku":"B08P58KT2V","price":61.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51BVi25fetL._SL1500.jpg?v=1769438452","url":"https:\/\/gearmusthave.com\/products\/thermostat-copper-wire-18-8-brown-100ft-durable-thermostat-cable","provider":"GearMustHave","version":"1.0","type":"link"}