Depth of Laying Derating Factors

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Depth (m) Directly laid Laid in ducts
Single-core Multi-core Single-core Multi-core
0.50 1.05 1.04 1.045 1.03
0.60 1.03 1.03 1.025 1.02
0.80 1.00 1.00 1.00 1.00
1.00 0.975 0.98 0.975 0.99
1.25 0.955 0.96 0.955 0.97
1.50 0.94 0.95 0.94 0.96
1.75 0.925 0.94 0.93 0.95
2.00 0.915 0.93 0.92 0.94
2.50 0.895 0.91 0.90 0.93
3.00 0.88 0.90 0.89 0.92