1/0 AWG XHHW-2 Stranded Copper Building Wire

Name: 1/0 AWG XHHW-2 Stranded Copper Building Wire
Brand: Nassau National Cable - CU
SKU: NNC2426X
Price: 4.74 USD
Availability: InStock
Rating: 4.88 (9018 reviews)

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1/0 AWG XHHW-2 Stranded Copper Building Wire

1/0 AWG XHHW-2 Stranded Copper Building Wire

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SKU: NNC2426X

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1/0 AWG XHHW-2 Stranded Copper Building Wire

Availability: In stock

Price:

Regular price: $4.74 /FT
Sale price: $4.74 /FT

Shipping Cost Calculated at Checkout. Standard Lead Time is 1 to 6 Business Days.

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Fast Service!

Good wire, fair price and excellent service. NNC always in stock and buy just what you need.

High quality wire

The XHHW-2 copper building wire is noted to be slightly more robust than the THWN wire. This was used to tie the external building disconnect to the main breaker panel. The pricing was reasonable based on market prices, shipping was on time and I am pleased with the product overall.

Nassau made it right

I ordered some large building wire in three different colors, and one of the colors arrived with no UL mark. That's a wire I can't use, it wouldn't pass inspection for this project. Nassau quickly shipped a replacement wire that bears the UL marking I needed. Thanks Nassau.

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Product Information

Specification

1/0 AWG XHHW-2 Stranded Copper Building Wire

Allowable Ampacity (Per NEC Table 310.16):

60°C: 125 Amps
75°C: 150 Amps
90°C (XHHW-2 Rating): 170 Amps

1/0 AWG copper XHHW-2 is installed in conduit and other NEC-recognized raceways for services, feeders, and branch circuits, in wet or dry locations at up to 600V. It's rated 150A at 75°C and 170A at 90°C.

Also Known As:

1/0 AWG XHHW-2 Copper Building Wire, 1/0 XHHW Cable, 1/0 XHHW Service Wire, 1/0 XHHW Copper Wire, 1/0 CU Building Wire, 1/0 Black Stranded CU SIMpull XHHW-2 Wire, Southwire 11300199, 1/0 AWG XHHW Building Wire, 1/0 XHHW Building Wire, 1/0 Gauge Black Stranded Copper XHHW-2 Wire, 1/0 Stranded Copper XHHW-2 Wire.

Applications:

120/240V Single-Phase Residential Service Entrances – Suitable for up to 150A main service panels and subpanels in homes, when installed per NEC requirements
208V Three-Phase Commercial Feeder Circuits – Supplies 100-125A feeder circuits in retail stores, offices, and small warehouses
480V Three-Phase Industrial Feeders – Powers 100-125A industrial equipment, HVAC systems, and lighting loads
Generator and Backup Power Connections – Ideal for 100-150A generator outputs in hospitals, data centers, and emergency backup systems
Cable Tray Installations – Supplies 100-150A industrial motors, pumps, and processing equipment, where permitted by NEC
Parallel conductor sets, since 1/0 is the smallest size the NEC allows in parallel

Construction:

Conductor:

Material: Class B compressed stranded bare copper per ASTM B3 and ASTM B8

Insulation:

Material: Cross-linked polyethylene (XLPE) with SIMpull Technology
Properties: Flame-retardant, resistant to chemicals, moisture, and abrasion

Features:

SIS - 8 AWG and larger
Sunlight resistant
-40°C cold bend resistance
FT1 flame test rating
Gasoline and oil resistant II
CT Rated - 1/0 AWG and larger
FT4 flame test - 350 kcmil and larger
RoHS/REACH compliant

Standards & Compliance:

UL Standard 83 – Thermoset-Insulated Wires and Cables
ASTM B3 & B8 – Soft and Concentric-Lay-Stranded Copper Conductors
ASTM B787 – 19 Wire Combination Unilay-Stranded Copper Conductors
Federal Specification A-A-59544
RoHS/REACH Compliant
NEC Article 310.16 – Ampacity Ratings
ICEA S-95-658 (NEMA WC70) – Power Cables Rated 2000V or Less
IEEE 1202/FT4 Flame Test – (70,000 BTU/hr) 350kcmil and Larger
Buy American & Buy America Act (BAA) Compliant (49 U.S.C. § 5323(j) and 49 C.F.R. part 661)

Specifications:

Size: 1/0 AWG
Number of Strands: 19
Diameter Over Conductor (Inches): 0.361
Insulation Thickness (mils): 55
Approx. OD (Inches): 0.480
Copper Weight (lbs/mft): 326 lbs
Net Weight (lbs/mft): 363 lbs
Min Bending Radius: 1.9 inches
Max Pull Tension: 844 lbs
Southwire Part (SIMpull): 11300199

Compatible with Manufacturer
Southwire :	Black : 11300199 White : 21810799 Red : 21811599 Blue : 55308799 Green : 47412202 Yellow : 55309008 Orange : 55308908 Brown : 55308808 Gray : 55309199
HWC :	HW00210101
Priority Wire & Cable :	1/0STRXHHW

*Data provided on this page is subject to change based on different manufacturers' variances

** Images are for display purposes only refer to Product Technical Details for accurate information on the product.

In the case the material only comes in a predetermined color or doesn’t come with any color

Download PDF Spec Sheet

FAQ's

What is 1/0 copper XHHW-2 used for?

XHHW-2 is single-conductor building wire with cross-linked polyethylene (XLPE) insulation, which is where the "X" in its name comes from. "HHW" stands for high heat and water resistance, and "-2" means it's rated 90°C in wet locations as well as dry. 1/0 AWG copper XHHW-2 is installed in conduit or other NEC-recognized raceways at up to 600V and is rated 150A at 75°C. It's used for 175A home services, 150A feeders and subpanels, generator transfer switches, and parallel conductor sets.

What are the main differences between XHHW and XHHW-2 wires?

Both use cross-linked polyethylene (XLPE) insulation and are rated 600V. The difference is the wet rating. XHHW is rated 90°C in dry locations but only 75°C in wet locations. XHHW-2 is rated 90°C in both, and it passes stricter UL 44 moisture testing. XHHW-2 can be used anywhere XHHW is allowed.

What is the difference between THHN and XHHW-2 wire?

Both THHN/THWN-2 and XHHW-2 are 600V building wires rated 90°C in wet and dry locations, so the real difference is the insulation. THHN/THWN-2 has thin PVC insulation with a nylon jacket. XHHW-2 has a single, thicker layer of cross-linked polyethylene (XLPE), a thermoset material that doesn't melt. XHHW-2 holds up better to abrasion, moisture, and cold. THHN/THWN-2 has a smaller diameter, so more conductors fit in the same conduit, and it usually costs less.

How many 1/0 copper XHHW-2 wires fit in 2" PVC conduit?

Up to 7 conductors of 1/0 copper XHHW-2 fit in 2" Schedule 40 PVC, and up to 6 in 2" Schedule 80 PVC, based on the NEC Chapter 9 40% fill limit.

Can XHHW-2 wire be buried underground?

Not directly. XHHW-2 is not rated for direct burial, so it can't go in a trench without conduit. It can be installed underground inside conduit, because underground raceways are wet locations and XHHW-2 is rated 90°C wet. For burial without conduit, use a direct burial cable such as USE-2 or URD.

Does XHHW-2 wire have to be run in conduit?

Yes, in standard building installations. XHHW-2 is a single-conductor building wire meant for conduit or other recognized raceways. It can't be run exposed outdoors or fished through walls like NM cable, so inside a wall it has to be in conduit, such as EMT or flexible metal conduit. The NEC allows a few exceptions, such as cable tray for 1/0 AWG and larger conductors with a CT marking, or open wiring on insulators, but these are uncommon.

Is XHHW-2 wire sunlight resistant?

Yes. NNC's XHHW-2 is marked sunlight resistant, so it holds up in conduit runs exposed to the sun and where the wire leaves the conduit, such as at a weatherhead. Sunlight resistance doesn't replace the conduit requirement.

Can XHHW-2 wire be used in cold weather?

Yes. XLPE insulation stays flexible in the cold much better than PVC-insulated THHN, which makes XHHW-2 easier to pull in winter. It's commonly rated for installation down to -40°C (-40°F). Check the spec sheet for the exact minimum.

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