⚡ IEEE 80 Conductor Sizing (Withstanding 40kA / 0.5s S/C Thermal Fusing Limits)

Substation Ground Grid Conductor Calculator

Calculate minimum cross-sectional area for buried copper substation ground grid conductors under IEEE 80 Section 11.3: calculate thermal fusing limit (A_kcmil based on symmetrical short-circuit fault current 25-50 kA, fault duration t_f 0.5-1.0s, and maximum allowable conductor temperature 1,083°C for exothermic welded joints), and electrical profits.

1. Project & Operating Inputs

Total Ground Grid Buried Length (Linear Feet e.g. 6,500 Linear Feet Grid)

Available Fault Current (kA e.g. 40.0 kA Short-Circuit Current)

Customer Bid Price for Supplied, Trenched & Welded Ground Grid ($ / Ft)

4/0 AWG / 250 kcmil Bare Soft-Drawn Copper, Exothermic Shots & Crew ($ / Ft)

2. Financial Breakdown & Yield

IEEE 80 CONDUCTOR FUSING SIZING

Turnkey Ground Grid Conductor Profit

Substation Electrical Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost