Normalize conductor area and compare manufacturer metal mass with insulated/gross cable weight.
Checkable specification fields
These are examples from the named references, not assertions about a reel you have not shown us. Match the actual jacket, tag and part number before using a product claim.
| Field | Documented example / boundary | Source |
|---|---|---|
| Size-system boundary | NIST Handbook 109 uses AWG through 4/0 for the smaller range and circular-mil area for larger conductors. | [1] |
| 4/0 area | IEWC lists 4/0 as 211,600 circular mils, approximately 120 mm² in its comparison chart. | [2] |
| Southwire 500 kcmil example | Its THHN/THWN-2 copper example lists 1,543 lb copper and 1,662 lb total cable per 1,000 ft. | [3] |
| Not reel weight | The maker’s total cable weight excludes a spool/reel and packaging; a different construction or length changes the comparison. | [3] |
Normalize the printed notation
Kcmil means one thousand circular mils of conductor cross-sectional area. MCM is an older notation seen on labels; convert notation before comparing a lot, but preserve the original printed size as evidence. A jacketed outside diameter cannot substitute for conductor area because insulation, jacket, shielding and stranding vary.
- Copy the actual AWG, 4/0, MCM or kcmil designation from the jacket and tag.
- Record whether the metal is copper or aluminum and the number of conductors.
- Use a named maker’s dimension table only after matching the exact construction.
Do not conflate copper mass with shipment weight
For one specific Southwire 500 kcmil product, copper mass is less than complete insulated-cable mass. Gross reel weight adds packaging; a mixed, cut or multi-conductor lot requires different assumptions. The site’s copper calculator estimates nominal bare-copper mass and does not measure the offered reel.
- State footage basis and whether a reported weight is conductor, cable-only or gross reel.
- Never use a theoretical mass as a guaranteed recovery, resale price or acceptance result.
Source notes and scope
The linked references support the specific examples above. Product designs and standards can change; seller-supplied markings, measured length and current condition require separate verification. Nothing here states that this buyer stocks, tests, guarantees or accepts a particular cable, or offers installation advice.