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Building Wire

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Sycor's Building Wire Capabilities

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 Building Wire example

Our team supplies building wire to a broad range of industries, including hydro utilities, contractors, and control panel manufacturers. Building wire and cable are used throughout the world in the construction of all kinds of architecture such as residential, commercial and public properties to huge industrial plants. These wires are very reliable and are typically used for carrying electrical current from an external source.

Building wire as a whole is an extremely popular category around the world. Traditionally used for conducting electrical power from an external source, our teams specialized building wires are created and assembled to the NEC requirements, which designates what cables can be used in building conduits and high traffic areas.


Building Wire red


Building Wire Breakdown

THHN Building Wire

THWN Building Wire

TFFN Building Wire

T = Thermoplastic                            

HH = High Heat Resistance

N = Nylon Coated

Temp. Rating: 90°C in dry locations 

T= Thermoplastic                         

H = Heat Resistant

W = Water Resistant

N = Nylon Coated

Temp. Rating: 90°C in dry 75°C in wet

T = Thermoplastic

F = Flexible

F = Fixture

N = Nylon Jacket

Temp. Rating: 90°C in dry locations


XHHW Building Wire

X = Cross-Linked Polyethylene (XLPE)

HH = High Heat Resistance

W = Water Resistance

Temp. Rating: 90°C in dry 75°C in wet   

Building Wire Characteristics

Building wire are versatile products that are suitable for permanent installations in a number of applications, such as within conduits and other raceways, appliances, HVAC systems, lighting systems, and most other general-purpose applications. Building wire also comes in a variety of gauges, stranding options, colours, insulations and jackets, which means that whatever your project may be, Sycor will have the construction you need.

The most popular types of building wire that Sycor offers are the CSA certified T90TW75RW90RWU90 and the UL certified TFFN and XHHW. The XHHW building wire is an improvement on THHN, THWN and TFFN, because of the material and the thickness of the insulation. XHHW building wire has a thicker jacket making it more resistant to ozone, abrasion, chemicals and oil. TFFN, THHN and THWN building wires use a much thinner jacket, and when products such as these are subject to extreme conditions, the jacket breaks down at an increased rate. This type of construction is typically why the XHHW building wire is preferred because even with a thicker jacket, the wire is more flexible with its XLPE insulation.

Have a question about building wires? We have the answers! Whether you are unsure of which type of product best suits your application or are just curious about wires in general, Sycor's dedicated team is at your disposal. Request a quote online, email, or call us today!