![]() ![]() It’s also a thicker insulation that can better protect against breakdown when exposed to extreme environments. 'The “X” in XHHW (generally abbreviated as XPLE) is an insulation material that is more resistant to wet environments than THHN (90☌ vs 75☌). What is XHHW Wire?Ĭross-Linked Polyethylene High Heat-resistant Water-resistant Wire (mercifully shorthanded as XHHW) is a single conductor electrical wire used primarily for commercial and industrial building applications. The main difference between THHN and THWN wires are their maximum recommended operating temperatures in wet locations. Some communities do not allow the use of Romex, so be sure to check with local codes before using. ![]() Romex may also present some challenges for installation with conduit as larger conduit may be required compared to the same gauge of THHN. Romex (or other brands of NM-B cable) is not permitted in commercial applications or residences taller than three stories. There are some very critical differences when it comes to code compliance. Romex is essentially multiple THHN wires together in a single PVC sheathing. We generally think of a specific type of Romex, which is known for its nonmetallic sheathing and primary use as branch wiring. Romex is often used as residential wiring for electrical circuits and lighting. When we think of Romex, we most commonly are referring to the trade name for Thermoplastic-Sheathed Cable (TPS). Temperature Rating = 90☌ (Dry), 75☌ (Wet) Temperatures up to 90☌ in wet conditions vs 75☌ for THHN. The key difference is the “W” in the name indicates water-resistance. Call 85 if we can answer any questions Thanks for stopping by Your Pal Wire And Cable Your Way is a premier online shopping destination selling electrical wire & cable at competitive prices. THWN is also a single conductor wire with PVC insulation and a nylon jacket. View our THHN/THWN-2 category to learn more. THWN is essentially the same as THHN and the two are often used interchangeably. Its heat and oil resistance makes THHN a suitable wire for appliances and machine tools. 3.) 2/3C with ground Tray Cable (THHN-PVC) for 100 Amp Sub-Panel. Single Conductor 2 gauge THHN Copper Wire Needs to be buried in a conduit Click here for pricing on 2 gauge THHN wire. 2.) 2 THHN/THWN-2 Wire for 100 amp sub-panel. It’s commonly used in conduit as electrical wire for buildings. Click here for pricing on 3 gauge THHN wire. Thermoplastic High Heat-resistant Nylon-coated wire (THHN) is a single conductor wire with PVC insulation and a nylon jacket. This guide will help explain the differences and make your choice of wire more straightforward. Here we examine some of the most common of them THHN, THWN, Romex and XHHW. In the world of building wire, there are several common choices available that at first appear quite similar. Types of Electrical Wire: THHN vs THWN vs Romex vs XHHW Types of Electrical Wire: THHN vs THWN vs Romex vs XHHW.
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