Patched - Cable Derating Factor

( k_temp \times k_group \times k_depth \times k_soil \times k_altitude \times \dots ) 3.1 Ambient Temperature ((k_temp)) Higher ambient temperature reduces heat dissipation.

| Number of circuits/cables | Spacing (touching) | Spacing (≥1 cable diameter) | |---------------------------|--------------------|-----------------------------| | 1 | 1.00 | 1.00 | | 2 | 0.80 | 0.85 | | 3 | 0.70 | 0.80 | | 4-5 | 0.60 | 0.75 | | 6-8 | 0.50 | 0.70 | Standard soil is 1.2 K·m/W (e.g., damp clay). Dry sand or backfill can be >2.5 K·m/W. cable derating factor

Note: For high temperatures >55°C, special cables are required. When multiple cables run together, each heats its neighbors. ( k_temp \times k_group \times k_depth \times k_soil

For a given installation, calculate the total derating factor before selecting conductor cross-section. This report is for informational purposes. Always follow local electrical codes and standards. Note: For high temperatures >55°C, special cables are