Receiving Helpdesk

what does the 2 in xhhw 2 stand for

by Prof. Korey Lang Jr. Published 2 years ago Updated 2 years ago

W = Water Resistant. W = Water Resistant. N = Nylon Jacket. (Not Required) -2 = Temperature Rated 90°C Wet/Dry.

Full Answer

What is XHHW-2 wire used for?

What Is XHHW-2 Wire Used For? XHHW-2 (cross-linked polyethylene high heat resistant water resistant) is a building wire that has an array of industrial and commercial applications . It is often used instead of THHN (thermoplastic high heat resistant nylon) wire.

What is the difference between XHHW-2 and THHN?

The key difference is the additional protections provided by the insulation of XHHW-2, which is a thermoset while THHN is a thermoplastic. The jacket of XHHW-2 wire is thicker and more rugged than THHN’s, provides more protection against chemicals, abrasion, moisture, and is more flexible as well.

What is the temperature rating of XHHW-2?

However, along with its water-resistant insulation, XHHW-2 has a 90° C temperature rating in dry and wet locations. Kris-Tech goes beyond the standard requirements, offering a 105° C dry and 1000 volt rating. Here are some common uses found for XHHW-2:

What is the difference between XHHW-2 and Kris-Tech?

However, along with its water-resistant insulation, XHHW-2 has a 90° C temperature rating in dry and wet locations. Kris-Tech goes beyond the standard requirements, offering a 105° C dry and 1000 volt rating.

What does XHHW-2 stand for?

XLPE High Heat-Resistant Water-ResistantXHHW-2, or XLPE High Heat-Resistant Water-Resistant, Wire is a general-purpose wire suitable for use in conduit, raceways, feeders, and branch circuits. It is also often found in power distribution systems in industrial, commercial, and residential buildings. It features XLPE (Cross-linked Polyethylene) insulation.

What's the difference between XHHW and XHHW-2?

According to Underwriters Laboratories (UL) Standard 44, XHHW insulation is suitable for use in dry locations up to 90° C (194° F), or wet locations up to 75° C (167° F). XHHW-2 insulation, which is similar to XHHW, is suitable for use in dry or wet locations up to 90° C (194° F).

What does the 2 in THWN 2 stand for?

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.

Why would you use type XHHW-2 over Type XHH wire?

XHHW-2 wire is the next generation XHHW wire. While its main use is for residential, commercial and industrial buildings, it is also used in raceways, feeder and circuit wiring. XHHW-2 is approved for use up to 600V and is UL Listed for 90° C (194° F), in both dry and wet locations.

Can XHHW-2 be used in conduit?

This aluminum building wire is intended to be used for general purpose applications in conduit, underground in conduit, or in any other recognized raceways for services, feeders, and branch-circuit wiring. XHHW-2 wire is generally used for power distribution in residential, commercial, and industrial buildings.

Can XHHW-2 be direct buried?

1 Type XHHW/XHHW-2 cable shall not be used in direct burial applications.

Is Thhn same as THWN?

Thermoplastic high-heat resistant nylon-coated wire, or THHN, is a common wire used for connecting branch circuits and appliances. Its counterpart is called THWN (or THWN-2).

Is Romex THWN?

Romex wire is made out of two or three THHN wires combined with a grounding bare copper wire. Like the THHN wires, Romex wire can't be used outside because of its minimal PVC jacket protection.

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