Building Wire

Building wire is the most frequently specified wiring solution today for commercial and residential construction projects.

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Type TFFN may be used as fixture wire, machine tool wiring, or appliance wiring material as specified in the National Electrical Code®2. Type TFFN, conductor is suitable for use at temperatures not to exceed 90°C. 


THHN  stands for Thermoplastic High Heat-resistant Nylon coated. THHN can come in stranded or solid conductors depending on the size. It is either manufactured in copper or aluminum and covered in a PVC (polyvinyl chloride) insulation with a nylon jacket. THHN is UL listed with a rated 90 degrees Celsius in dry locations or 75 degrees Celsius in wet applications with a THWN rating. THHN building wire may also be used for wiring of machine tools, control circuits or on certain appliances.


TelcoFlex® is the premiere central office power cable in the country. Audited by Tecordia to all 33 requirements of GR-347-CORE, TelcoFlex® is also UL Listed and CSA certified, and rated 105°C Dry as AWM, 60°C Wet – 600 Volts DC or AC. TelcoFlex® features TelcoHyde, a non-halogen, Low-Smoke and environmentally friendly Silicone Free and lead-free thermoset rubber insulation. TelcoFlex® also offers more flexibility and durability for better cable pulling through trays. TelcoFlex® is available both in braided and non-braided, from 14 AWG to 750 MCM, and in colors. 

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