⚡ UL 857 Sandwich Bus Duct (800A-5000A), Copper/Aluminum Voltage Drop % & kA

Commercial Sandwich Busway & Voltage Drop Calculator

Size high-ampacity compact sandwich bus duct feeders (Schneider / Eaton / Siemens) under UL 857 & NEC Article 368: calculate 3-phase 4-wire copper and aluminum busway ampacity (800A to 5000A), line-to-line voltage drop percentage (less than 2.0% on long runs), short-circuit withstand (65 kA to 150 kA RMS), and electrical contractor margins.

1. Project & Operating Inputs

Busway Feeder Run Length (Linear Feet e.g. 350 Linear Feet)

Design Operating Current (Amps e.g. 2,000A Continuous)

Customer Bid Price for Supplied & Hung Busway ($ / Lin Ft)

Copper Bus Duct, Joint Packs, Trapeze Hangers & Electricians ($ / Ft)

2. Financial Breakdown & Yield

UL 857 SANDWICH BUSWAY SIZING

Turnkey Busway Feeder Profit

Electrical Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost