Power Cable Pulling: MIN_BEND_RADIUS
Power cable pulling tension limits, sidewall bearing pressure limits, friction coefficients, jam ratio thresholds, minimum bend radius multipliers, and NEC conduit fill limits. Covers copper (K=0.008) and aluminum (K=0.006) max tension by AWG/kcmil per ICEA P-79-561 / IEEE 1185-2019; SWBP limits for XLPE, EPR, PVC, armored, and lead-sheathed cables; COF by conduit type (steel/PVC/HDPE/FRP) and lubrication condition; jam ratio safe zones (danger: 2.7–3.1); NEC 300.34 bend radius multipliers.
| parameter type | record id | insulation type | notes | unit | value max | value min | value typical |
|---|---|---|---|---|---|---|---|
| MIN_BEND_RADIUS | MBR_ARMORED_TYPE_MC | interlocked_armor | Type MC interlocked armor: 7× OD minimum per NEC 330.24; may vary by manufacturer | x_OD | 7 | 7 | 7 |
| MIN_BEND_RADIUS | MBR_MV_EPR | EPR | MV EPR (all voltage classes): 12× OD; EPR flexibility advantage over XLPE reduces field installation issues | x_OD | 12 | 12 | 12 |
| MIN_BEND_RADIUS | MBR_MV_XLPE_15_35KV | XLPE_15_35KV | MV XLPE 15–35kV class: 12× NEC minimum; manufacturers often recommend 15× for field bends | x_OD | 15 | 12 | 15 |
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