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In this video we use BS7671 On-Site Guide to workout the maximum distance between supports for twin and earth cables in accessible positions. Using Appendix D table D1 in the On-Site Guide we can find the clipping distances both on the horizontal and vertical plane for thermoplastic flat profile cables something I call twin and CPC cables. The video includes a full demonstration on how to calculate the maximum distances of the cable supports.
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== 🕐 Time Stamps - Cut to the action 🕕 ==
00:00 - Maximum clipping distances
00:44 - Appendix D table D1
01:12 - Accessible positions
01:43 - Cable diameter in mm
02:30 - Flat cables major axis
03:11 - On-Site Guide
04:00 - Measuring the cable
04:39 - Thermosetting or thermoplastic
05:34 - Maximum clipping distance for 1.0 mm2 T & E
06:14 - Bigger cables more clips?
07:14 - Measuring 2.5 mm2 cable
07:52 - Maximum clipping distance for 2.5 mm2 T & E
08:45 - Measuring 6.0 mm2 cable
09:25 - Premature collapsing of the wiring system
Videos are training aids for City and Guilds (C and G) and EAL courses Level 1, 2, 3 plus AM2, AM2S and AM2E.
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