Cable calculation. Calculating the live cable size. A second example with a volt drop problem

This video is mainly aimed at students on Level 2. The video shows a step by step method how to calculate the size on the live cable only using the On Site Guide. Each formula you need is shown and explained, each table used and page is shown in detail.
Finding Ib, In, It, Iz and all relevant C factors. Finding the reference methods, mV/A/m value and calculating volt drop.

BS7671 18th Edition amendment 2
https://amzn.to/44pCl0a

On – Site Guide 18th Edition amendment 2
https://amzn.to/3YOnGKQ

Casio Scientific Calculator
https://amzn.to/47NJNFe

Multi coloured pen
https://amzn.to/3EcKWbT

15cm ruler
https://amzn.to/44v0rXg

30cm ruler
https://amzn.to/44q8ox1

Folding ruler
https://amzn.to/45qJ7UP

Black writing pens
https://amzn.to/3EdnxqI