PDU Branch Loading and Failover Capacity

Applies the continuous-load allowance to a single- or three-phase PDU branch, converts usable current to kVA and kW, and checks normal and paired-feed failover loading. The device nameplate, branch topology, and adopted electrical code govern.

usable current = breaker amperes x continuous-load fraction; kVA = V I for single phase or sqrt(3) V I for three phase; device count = floor(usable kW/device W).

NEC continuous-load sizing and the standard AC power relations. The adopted NEC edition, equipment ratings, and authority having jurisdiction govern.

Basic single- and three-phase power arithmetic; NEC continuous-load requirements are publicly summarized by authorities and manufacturers.

Estimate. AHJ and licensed professional govern.

Field names used by the API: line_voltage_v, phase_configuration, breaker_rating_a, continuous_load_pct, power_factor, device_draw_w, usable_current_a, branch_capacity_kw, supported_device_count, failover_current_a, pair_filled_survivor_breaker_pct

• Continuous fraction entered from the adopted electrical requirements, commonly 80% where 125% sizing appliesNEC / AHJ
• Balanced three phase equal phase loading and entered power factorplanning model