2023 NEC Chapter 9
Table 1 fill limits and transcribed Tables 4 and 5 raceway and conductor areas. USE-2 remains unsupported pending Table 5 verification.
Calculation methodology
Every value should say what it is.
PullPro tracks the source and confidence behind reel, conductor, and calculation data so a rule of thumb cannot silently present itself as a manufacturer rating.
Current as of August 3, 2026PullPro does not certify code compliance.
NEC Chapter 9 Tables 4, 5, and 9 are transcribed references and have not yet been independently checked against a published code book. Conduit-fill and voltage-drop results are preliminary.
Confidence system
Five levels keep authority visible.
A missing value remains unknown. It is never converted to zero or quietly replaced with an estimate.
PMDPublished Manufacturer DataA value published by the equipment or material manufacturer.
PISPublished Industry StandardA value attributed to an identified industry standard.
DBPDistributor Best PracticeOperational guidance that is not a manufacturer rating or code requirement.
EEEngineering EstimateA transparent calculation or estimate with its basis identified.
UNKNo published dataPullPro cannot support a conclusion from the available source material.
Table 9 at 75 °C
Impedance-path calculations for 60 Hz systems. The familiar 3% and 5% values are design guidance from Informational Notes—not enforceable limits.
Manufacturer footage tables
Published reel data is carried with provenance. Rated, advisory, and geometry-derived limits remain distinct.
Dataset versions
The reference set is versioned.
Current manufacturer confirmation is required.
The shipped Encore footage table came from a superseded reference. Compared with the current chart, 59 of 103 values differ and 11 have no counterpart. PullPro identifies the dataset as a legacy reference rather than hiding the discrepancy.
Distributor practice is not a NEMA rating.
Steel-reel limits previously framed too strongly were corrected. Current handling keeps advisory distributor data separate from published standards and manufacturer ratings.
Source families
Manufacturer and industry references
Current source material includes Encore Wire, Southwire SIMpull systems, Service Wire packaging guidance, USESI distributor material, NEMA WC-26/EEMAC 201, ANSI/ASME B30.7, ANSI A10.22, and DOT/FMCSA transport guidance.
Planning guidance must be checked before release.
Confirm rated reel values with the current manufacturer publication and verify applicable electrical calculations against the governing code book, project documents, and qualified engineering review.