Differences Between THHN and THWN Cable
What is THHN Cable
THHN is a code for thermoplastic high heat resistant nylon coated wire which is allowed for use in dry to damp location and rated for a maximum temperature of 90ºC (194ºF).
What is THWN Cable
THWN is a code for thermoplastic heat and water resistant which is suitable for use in both dry and wet locations with a maximum temperature rating of 75ºC (167ºF).
THWN-2 Cable
The THWN wire we carry is actually coded THWN-2 indicating its rated 90 degrees for both wet or dry locations which is even better.
So how do you know when to use THHN or THWN? It’s a good question as the two wires are pretty identical. For most jobs, either will do. While there are slight differences between the two (see the infographic to the right for the distinctions), they are interchangeable for the most part.
.png?width=800&height=1487&name=WCYW%20Infographic%20-%20THHN%20vs.%20THWN%20(1).png "WCYW Infographic - THHN vs. THWN (1)")
Buying Dual Rated THHN/THWN-2
Because of these similarities, all of our wire here at Wire And Cable Your Way is dual rated THHN/THWN-2 which contains all of the above ratings and properties. This dual rated THHN/THWN-2 will be printed on the jacket of each wire.
View our THHN/THWN-2 category to learn more.
Call 855-880-8010 if we can answer any questions!
Thanks for stopping by!
Your Pal!
Willie
------------------------------------------------------------------------------------------------------------------------
Wire And Cable Your Way is a premier online shopping destination selling electrical wire & cable at competitive prices. We cut by the foot with no extra charge and ship same day!
Leave a Reply