{"product_id":"18-awg-thermostat-cable-cl3r-ft4-300v-solid-copper-reliable-hvac","title":"18 AWG Thermostat Cable CL3R\/FT4 300V Solid Copper - Reliable HVAC","description":"\u003cp\u003eIn this review of the 18 AWG thermostat cable, the bottom line is simple: this is a reliable, installation-friendly low-voltage wire well suited to HVAC thermostats, doorbells, security panels and similar signal applications. The reviewer found the 100% solid pure copper conductors and the 300V CL3 rating to be the single biggest reason to buy, because they deliver predictable conductivity and an extra safety margin for Class 3 power-limited circuits. It is a practical option for installers and DIYers who need a durable, sunlight-resistant jacket that is easy to pull and strip.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid copper conductors:\u003c\/strong\u003e Solid pure copper provides maximum conductivity and consistent signal performance for thermostats and low-voltage devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300V CL3 rating:\u003c\/strong\u003e The 300V insulation and CL3 classification give a higher safety margin for power-limited thermostat and control circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndoor\/outdoor use:\u003c\/strong\u003e Sunlight-resistant jacket meets UL 1581 requirement for outdoor exposure, so the cable can be routed in exposed areas when needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation-friendly jacket:\u003c\/strong\u003e The round, slick outer jacket and smooth edges make the wire easy to pull through bends and conduits, reducing installation time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRip cord for fast stripping:\u003c\/strong\u003e Built-in rip cord speeds jacket removal during termination and helps avoid nicking conductors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoHS compliant:\u003c\/strong\u003e Materials meet environmental safety requirements, giving installers and buyers added regulatory assurance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis cable is aimed at HVAC technicians, electricians and knowledgeable DIYers who need a dependable thermostat or control wire with full-copper conductors. It is especially useful where a higher insulation rating and sunlight resistance are desirable, such as run-outs to exterior-mounted thermostats, doorbells and signal wiring that may see some sun exposure.\u003c\/p\u003e\n\u003cp\u003eThose who need multi-conductor shielded cable, flexible stranded conductors for frequent movement, or specialty audio twisted-pair wiring should look elsewhere. For standard fixed low-voltage thermostat and alarm wiring where solid conductors and a CL3\/300V rating are appropriate, this cable fits well.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSolid pure copper conductors deliver reliable conductivity and long-term signal stability.\u003c\/li\u003e\n\u003cli\u003e300V CL3 rating and riser-rated jacket add an extra safety margin for low-voltage circuits.\u003c\/li\u003e\n\u003cli\u003eSunlight-resistant, smooth jacket and rip cord make pulling and termination straightforward.\u003c\/li\u003e\n\u003cli\u003eRoHS compliance and UL\/ETL listing provide regulatory reassurance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSolid 18 AWG conductors are less flexible than stranded cable and are not ideal where frequent movement or vibration occurs.\u003c\/li\u003e\n\u003cli\u003eInsulation thickness impressions vary among users; some may prefer a thicker or thinner jacket depending on preference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor\u003c\/td\u003e\n\u003ctd\u003e100% solid pure copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGauge\u003c\/td\u003e\n\u003ctd\u003e18 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage rating\u003c\/td\u003e\n\u003ctd\u003e300V (CL3 power-limited)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eListing\u003c\/td\u003e\n\u003ctd\u003eUL\/ETL listed, riser-rated (CL3R\/FT4\/CMR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSunlight resistance\u003c\/td\u003e\n\u003ctd\u003eMeets UL 1581 sunlight resistance for outdoor use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJacket features\u003c\/td\u003e\n\u003ctd\u003eRound slick jacket with rip cord for easy stripping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eRoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 18 AWG thermostat cable is a solid, no-nonsense choice for HVAC control, doorbells and low-voltage signal runs where durable, full-copper conductors and a higher insulation rating matter. It balances ease of installation with regulatory listings and sunlight resistance, making it good value for technicians and DIYers who need dependable fixed wiring rather than flexible stranded cable.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this cable be used outdoors?\u003c\/strong\u003e\u003cbr\u003eYes. The sunlight-resistant jacket meets UL 1581 requirements for outdoor exposure, making it suitable for exterior runs where UV exposure is possible.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the conductor solid or stranded?\u003c\/strong\u003e\u003cbr\u003eThe cable uses 100% solid pure copper conductors, which provide reliable signal conductance but are less flexible than stranded wire.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it work for doorbells and security systems?\u003c\/strong\u003e\u003cbr\u003eYes. The CL3 300V rating and solid copper conductors make it suitable for thermostats, doorbells, intercoms and many low-voltage security and signal systems.\u003c\/p\u003e","brand":"Syston Cable Technology","offers":[{"title":"Default Title","offer_id":48248808374491,"sku":"B0CDNRXVBW","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/5189-3yF0cL._SL1500_47e582f9-616d-4b27-b4ed-d6dbc00f42fb.jpg?v=1770973674","url":"https:\/\/gearmusthave.com\/products\/18-awg-thermostat-cable-cl3r-ft4-300v-solid-copper-reliable-hvac","provider":"GearMustHave","version":"1.0","type":"link"}