How to workout the minimum internal bending radius of fixed wiring like PVC/PVC twin and CPC (twin and earth) SWA and MI cables (MICC or Pyro) with full demonstration using BS 7671.

Using the diameter of the cable and then correct factor from BS7671 On-Site Guide Appendix D table D5 we can workout the minimum bending radius of cable’s.

BS 7671 minimum internal radii of bend in cable for fixed wiring includes full demonstration of calculations and bends

== 🕐 Time Stamps - Cut to the action 🕕 ==

00:00 - Minimum bending radius of cables
00:46 - On Site Guide Appendix D table D5
01:41 - Diameter of the cables
02:47 - Diameter of twin and CPC cables (twin and earth cables)
03:38 - Measuring the widest part of the cable
04:50 - Calculation for twin and CPC cable (2.5mm2)
05:30 - Draw a circle
06:09 - Smooth bend
07:17 - 6 mm2 twin and CPC cable next
07:34 - Diameter of the cable
08:26 - Calculation
09:00 - Draw a circle
09:20 - Smooth bend in 6 mm2 twin and CPC cable
10:24 - Steel wire armour SWA cable
10:56 - Diameter of SWA cable
12:22 - Smooth bend in SWA cable
12:54 - Diameter of mineral insulated cable (MICC or Pyro cable)
14:22 - Smooth bend in MI cable

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