Bus Pipe Sizing

Quick selector for substation pipe bus using NPS with Schedule 40 & 80. Base mode uses a material screen (J·A). Advanced mode follows IEEE 605-style mechanical sizing.

Advanced (IEEE 605 mechanical)

Fault current (kA RMS, 1‑cycle)

Asymmetry factor k (peak/RMS)

Phase spacing (in)

Support span (ft)

Allowable bending stress (ksi)

Force/length uses (μ₀/2π)·(k·I_RMS)²/D for parallel phases. Simply supported span with uniform load: M = wL²/8, σ = M·c/I. Thermal ampacity not computed here.