Bank-to-ambient temperature rise (or maximum permissible losses) for a buried concrete-encased duct bank, using an equal-area equivalent-cylinder simplification of the Neher-McGrath / IEC 60287 external thermal resistance method.
Neher-McGrath / IEC 60287 buried-cylinder external thermal resistance method (equal-area equivalent-cylinder simplification)
Generated
For preliminary engineering use only — always verify results against project-specific standards and a qualified engineer's review before use in a real design.