Derating Factor Table !!better!! — Cable

Derating factor tables are organized around three main environmental and installation parameters:

Derating factors are multipliers—usually less than 1.0—that reduce the allowable current. The most common categories include: Cable Current Rating Derating Factors Explained cable derating factor table

A 10 mm² copper cable has a base ampacity of 60 A in free air at 30°C. If installed in a 45°C ambient (factor 0.79) with three other circuits (factor 0.70), the final ampacity is: 60 A × 0.79 × 0.70 = 33.18 A . Thus, the load current must not exceed 33 A, not the nominal 60 A. Derating factor tables are organized around three main

Most tables break down derating into two primary categories: 1. Ambient Temperature Derating cable derating factor table