
Copper wire
THHN, THWN, THWN-2, XHHW, XHHW-2, RHW-2, bare copper, fixture wire
Review this material →WIRE & CABLE CATEGORIES · NEW YORK STATE
Seventeen categories, one rule: wire and cable only. Copper and aluminium, 600 volts through transmission class, on reels that are full, partial or still banded in original packaging.
INDEX
These are review categories, not a catalogue of everything manufactured. If a reel does not fit neatly into one of them — a mixed pallet, an unlabelled spool, a construction someone described to you over the phone — choose the nearest category and say so in the description.

THHN, THWN, THWN-2, XHHW, XHHW-2, RHW-2, bare copper, fixture wire
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URD, USE, USE-2, RHW-2/USE-2 dual rated, triplex and quadruplex
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Control, instrumentation, shielded twisted pair, process signal
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Full reels, partial reels, spools, coils, boxed lengths
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Building wire, power cable, control cable, portable cord
Review this material →SIZES · WHAT THE NUMBERS MEAN
American Wire Gauge runs backwards: a smaller number is a larger conductor, so #14 is the smallest common branch-circuit size and 4/0 is far heavier. Above 4/0 the industry switches to circular mils, written MCM or kcmil, and sizes move upward instead of backward: 250, 300, 350, 400, 500, 600, 750 and 1000 MCM.
For a review, the size on its own is not enough. A 500 MCM aluminium conductor and a 500 MCM copper conductor are different materials with different applications, and a 500 MCM THHN and a 500 MCM XHHW-2 have different insulation systems. Send the size with the type, the metal and the voltage rating, and the picture is complete.
| Small branch sizes | #14, #12, #10 AWG |
|---|---|
| Mid sizes | #8, #6, #4, #3, #2, #1 AWG |
| Large AWG | 1/0, 2/0, 3/0, 4/0 |
| MCM / kcmil | 250, 300, 350, 400, 500, 600, 750, 1000 |
| Conductor count | Single conductor or multi-conductor assembly |
| Voltage classes | 600 V, 1 kV, 5–35 kV, above 35 kV |
FORMATS
Format affects freight more than it affects value. A sealed 1000 ft reel is loaded as a reel; a coil is carried by hand; a partial spool of small gauge goes in a box with six others.
INVENTORY SUBMISSION · RESPONSE BY EMAIL OR PHONE
A single legible tag is usually enough to begin a review. Add photographs of the jacket legend and the reel, and say how many pieces are in the lot.
STATEWIDE · NEW YORK
Describe it in plain language and attach a photograph of the jacket print. Classification is part of the review, not a prerequisite for it.