Apply NEC 725.144 ampacity/bundling rules for PoE runs over data cabling

Steps

1. Confirm whether Table 725.144 even applies: it governs 4-pair cables carrying more than 60 W across the four pairs — it does not apply to standard IEEE 802.3 Type 1 (15.4W), Type 2 (30W), or Type 3 (60W, "PoE+") deliveries.
2. For higher-power PoE (e.g., 802.3bt Type 4/90W-class or larger bundles), look up the permitted ampacity by conductor AWG (22/23/24/26), insulation temperature rating (60/75/90°C), and bundle size in Table 725.144.
3. Apply the ambient-temperature correction: the table's baseline is 30°C, and Table 310.15(B)(1) or the 310.15(B) equation corrections apply above that.
4. If only half the conductors in each cable in the bundle are actually carrying current, the standard permits a 1.4x ampacity increase factor.
5. Consider Limited Power (LP) cables as an alternative: for bundles of 192 or fewer LP-marked cables, the table-derived ampacity may be used even if it exceeds the cable's marked current limit.