Southwire® SIMpull THHN® copper conductors are made with soft drawn copper. Marked as THHN in all sizes. Also marked as THWN-2 in sizes 8 AWG and larger or marked as THWN in sizes 14, 12, and 10 AWG. Marked sunlight resistant in sizes 2 AWG and larger.
Is Southwire Thhn dual rated?
That wire is actually dual rated as THHN and THWN, and the jacket will be stamped with both.
What use is Thhn cable suitable for?
THHN (Thermoplastic High Heat-Resistance Nylon coated) is a cost-effective building wire that is typically used for carrying electrical currents between buildings and external power sources, signaling, control wiring, machine tools, and automation systems.
What does TFFN stand for?
Thermoplastic Flexible Fixture Nylon wire
TFFN wire, or Thermoplastic Flexible Fixture Nylon wire, is a building wire with the same applications as THHN Wire. This wire is also made of thermoplastic materials. It is highly flexible but available in a smaller gauge range. TFFN wire is also classified as a fixture wire.
Is Thhn wire rated for wet locations?
THHN is thermoplastic, highly heat-resistant (up to 90 degrees C.), and nylon-jacketed. It is not suitable for wet locations. THWN is similar to THHN but is rated only for a maximum of 75 degrees C and it is suitable for wet locations.
Can Thhn be used in wet locations?
THHN wire is approved for up to 600V and is listed by Underwriters Laboratory (UL), as rated for 90° C (194° F) in dry and 75° C (167° F) in wet environments. THHN wire comes with a dual rating: THHN / THWN, which means it’s appropriate for both dry and wet applications.
Can you bury THWN?
THHN wire can be used in a conduit but is not rated for direct burial alone.
Can I use THWN in underground conduit?
Metal conduits could be helpful and area common choice for burying THWN. Do note that you should never use a conduit that is too thin, such as EMT, even though it might be rated for direct burial.
What color is Thhn?
Yes, THHN wire comes in a standard 10 colors including black, brown, blue, gray, green, orange, red, violet, white, and yellow. You might find THHN wire in pink, as well, but it’s less common. You can also stripe THHN if you need another color option.
Is TFFN wet rated?
When used as Type TFFN, conductor is rated for use up to 90°C. When used as Type MTW, conductor is rated for use up to 90°C in dry locations and up to 60°C for wet locations or when exposed to oil or coolant. When used as AWM, conductor is rated for use up to 105°C in dry locations.
What does THWN wire stand for?
THWN stands for ” Thermoplastic Heat and Water-resistant Nylon-coated.”. THWN is a designation for a specific insulation material, temperature rating, and condition of use (wet locations) for electrical wire and cable.
Can You Bury THHN wire?
The ground wire in MC cable is also a THHN wire rather than a bare copper ground wire so the cable remains moisture and solvent resistant. Underground Electrical Wire. THHN cannot be buried directly in the ground so you’ll have to upgrade on a single conductor to USE-2 wire.
Is THHN wire sunlight resistant?
It’s a sunlight resistant XLP (cross linked polyethylene ) insulation that can be used indoors, outdoors, in conduit and in underground raceway. It cannot be buried directly in the ground without raceway or conduit. XHHW has similar attributes as THHN, but THHN electrical wire isn’t sunlight resistant.
What does THHN cable mean?
THHN wire is the original version of the dual-rated cable. Designed to withstand heat up to 194 degrees Fahrenheit , this resistance drops to 167 degrees if oil exposure occurs. THHN wire is typically two-conductor, and found in the familiar ROMEX®-style cabling that laces all homes and other structures.
