🌡️ IEEE C37.23 (Copper/Aluminum Skin Effect Ratio, Ambient Temperature Derating 40°C-55°C)

Bus Duct Skin Effect & Derating Calculator

Calculate alternating current AC skin effect and proximity effect resistance multipliers ($R_{AC}/R_{DC} = 1.15 ext{ to }1.45$) for heavy rectangular copper and aluminum busbar packs: apply ambient temperature derating factors when bus duct operates in hot outdoor rooftop environments ($>40^circ ext{C}$ up to $55^circ ext{C}$), and industrial electrical margins.

1. Project & Operating Inputs

Nominal Busbar Ampacity (Amps e.g. 4,000A Nominal Rating)

Peak Ambient Outdoor Temp (°C e.g. 48.0°C High Summer Ambient)

Customer Bid Price for Supplied & Rerated Bus Duct Skid ($)

Silver-Plated Oversized Copper Busbars, Heavy Aluminum Enclosure ($)

2. Financial Breakdown & Yield

AC SKIN EFFECT DERATING

Turnkey Bus Duct Engineering Skid Profit

Industrial Power Transmission Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost