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What is the Difference Between THHN Vs. THWN Wire

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.

Buying Dual Rated THHN/THWN-2

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.


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