Last updated on September 25th, 2023 by Myla Pablo
THHN is a nylon-coated, thermoplastic, high-heat-resistant wire. For electrical wire and cable, it is constructed with a particular insulation substance, temperature rating, and usage circumstance. THHN wire, which is incredibly popular as a cheap building wire and may be used to wire machine tools, control circuits, and some appliances, accomplishes its duty wonderfully.
The building wire is produced with either copper or aluminum, comes in two types of conductors (stranded or solid), and is insulated with polyvinyl chloride (PVC) and a nylon jacket.
THHN cable is used for ordinary wiring in residential and commercial buildings. The nylon jacket of the cable offers mediocre abrasion resistance, and you must place THHN wire in a conduit or raceway. THHN wire is suitable for use in both dry and damp applications both inside and outside. This wire can also be used for control circuits, appliances, and machine tools. The dual thermoplastic high-temperature water-resistant nylon-jacket (THWN) rating on the majority of THHN cable types sold by AWC permits its use in damp environments.
THHN cable with pure copper conductors is available from AWC. THHN wires contain solid, soft-drawn copper conductors with smaller diameters between 10 and 14 American Wire Gauge (AWG). Copper conductors are stranded in larger THHN wires.
THHN wires feature an abrasion-resistant nylon coating over a thin layer of flame-resistant PVC insulation. Although you must adjust the wire’s ampacity at high ambient temperatures and when bundling cables together in a raceway or conduit, the wire is acceptable for applications of up to 90oC in dry settings and 75oC in wet conditions.
The THHN cable can withstand a maximum voltage of 600 volts. All THHN cables adhere to both the UL 106 Standard for safety machine-tool wires and cables as well as the UL 83 Standard for safety thermoplastic-insulated wires and cables. You can get permission from the Canadian Standards Association (CSA), and some THHN cables also have approval from the European Union’s Restriction of Hazardous Substances (RoHS) Directive.
The table below shows the latest retail September 2023 prices of THHN wire, in Philippines Peso price per pieces including its standard length and size
Price and Standard Sizes of THHN Wire per 1 meter length in the Philippines
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