2/0 Wire Buyers in Pennsylvania

2/0 carries 133,100 circular mils, about a quarter more area than 1/0, and it is the size that appears when a load calculation lands just past a 100 A service. In aluminum it is a familiar service conductor for residential and small commercial work. In copper it feeds subpanels, rooftop units and equipment that needs a little more than 1/0 can deliver. It is also the size that fits the lugs on most 125 A and 150 A equipment without a reducer, which keeps demand steady.

Pennsylvania sellers usually have it in three forms: THHN or THWN-2 singles on a reel, XHHW-2 for wet and underground locations, and 2/0 within a SER or URD assembly where it serves as one conductor of a multiconductor cable. Each form is valued differently, and the print or label is what tells them apart. Distributors stock all three forms, so a shop cleanout often contains a mix, and separating them before the call saves time.

Circular mils	133,100, roughly 0.105 square inches of conductor area
Stranding	19 wires in standard concentric strand, with compact strand available
Ampacity framework	NEC Table 310.16 lists 175 A for copper at 75 degrees C and 135 A for aluminum
Forms	THHN and THWN-2 singles, XHHW-2, and 2/0 inside SER, SEU and URD cable
Typical uses	125 A to 150 A feeders, residential service cable and subpanels

Reading the 2/0 designation

The zeros count upward as the conductor grows: 1/0, 2/0, 3/0, 4/0, and then the series switches to thousand circular mils. 2/0 is two zeros, which is easy to confuse with 2 AWG on a faded label. The difference in area is large, since 2 AWG carries about 66,360 circular mils against 133,100 for 2/0.

Most 2/0 is a 19 wire strand, and compact strand is common in aluminum because it makes a tighter, smoother conductor that terminates more predictably. When a reel is described as 2/0 compact aluminum, the buyer knows the outside diameter will be smaller than a standard strand of the same nominal size.

• Two zeros, not 2 AWG
• 133,100 circular mils, twice the area of 2 AWG
• 19 wire strand is standard
• Compact aluminum strand is common for service work

2/0 in Pennsylvania service work

Residential and small commercial services are the biggest source. Aluminum 2/0 in SER or SEU cable feeds panels in the 125 A range, and copper 2/0 appears where a designer wanted copper for a service or a long feeder. Rooftop units, small chillers and tenant subpanels account for a good share of the single conductor reels.

Agricultural and municipal work adds another stream. Barn services, well pumps and small treatment plants use 2/0 in aluminum because the runs are long and the cost difference matters. When those facilities are upgraded, the old service cable and the leftover reel often come out together.

• Residential and small commercial service cable
• Rooftop unit and small chiller feeders
• Tenant subpanels and house panels
• Agricultural and small municipal services

What drives the price of a 2/0 lot

Insulation type sets the market. THHN and THWN-2 in 2/0 is a commodity that any distributor can place, while XHHW-2 suits wet and underground work and holds value with the right buyer. Bare 2/0 copper is priced almost entirely on metal, since its use is grounding and bonding rather than current carrying.

Footage and packaging do the rest. A sealed 500 foot reel with a factory label is straightforward. An opened reel with 200 feet left is worth quoting but not at the same rate per foot, because the next user has to splice or plan around a short length. Multiconductor cable is valued as cable, not as loose conductors.

• THHN, XHHW-2 or bare, each with its own market
• Sealed reels against opened partials
• Multiconductor cable valued as a complete assembly
• Copper and aluminum kept as separate lines in a lot

Condition issues that affect 2/0

Aluminum is the material that needs attention. Its oxide film forms quickly and is not conductive, so a corroded 2/0 end tells a buyer the wire sat in damp conditions. White powder on the strands is a sign of moisture exposure, and heavy corrosion along the length reduces what the wire is worth even if the jacket looks clean.

Copper fares better but is not immune. Green verdigris at the ends, nicked jackets and kinked lengths from a dropped spool all show up in a photograph. Reels stored outdoors with the wrap exposed will have a chalked outer layer, and that layer is usually the first thing an inspector mentions.

• White oxide powder on aluminum strands
• Verdigris on copper ends after damp storage
• Kinks from dropped or crushed spools
• Chalked jacket on the outer wraps

What to photograph before you call

Take the label or reel tag, the conductor end, and the print if it is readable. For SER or URD, photograph the full cross section at the cut so the conductor count and sizes can be seen. A wide shot of the lot gives a sense of how much is there without a long description.

Include the approximate footage, the insulation type and whether the wire is copper or aluminum. If the material came from a service upgrade, mention the panel size, since that helps a buyer understand what the conductor was sized for. Once the details are in, the reply is a quote, with pickup arranged separately.

• Label, tag and conductor ends
• Cross section of multiconductor cable
• Footage and insulation type
• Copper or aluminum, stated plainly

What we buy in this category

• 2/0 copper THHN and XHHW-2 reels
• 2/0 aluminum SER and SEU cable
• 2/0 URD cable with concentric neutral
• Bare 2/0 copper grounding wire
• Partial reels from service upgrades
• Multiconductor cable containing 2/0
• Mixed contractor lots with legible labels
• Copper and aluminum kept separate

Selling 2/0 wire in Pennsylvania

Reels of 2/0 wire turn up from Philadelphia and the southeastern counties through the Lehigh Valley, and from Pittsburgh and the Mon Valley across to Harrisburg, Lancaster and York. Send the city or township with the photographs so pickup can be planned realistically.

• Philadelphia
• Norristown
• King of Prussia
• Pottstown
• Lansdale
• Abington
• Cheltenham
• Lower Merion