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cable calculation guide indepth

£7.00

This contains an in-depth, step-by-step guide for calculating the live and earth cable size using both the On Site Guide and BS 7671 18th Edition. Plus a small guide which tells you every formula you need, every page to turn to and every table to use, which fits into your On Site Guide

It also gives some additional comments to make to enable you to gain those all-important extra marks on your exam.

Following this easy step by step guide will almost guarantee you score maximum marks in that tricky, cable calculation question, that occurs in every final exam!!

Take the hardship away of trying to remember all those pages and different tables to use.

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Detailed Guide to Cable Calculations

It is important to remember that in order to achieve maximum marks in any cable calculation question, every table and regulation used from BS 7671 and the On-Site Guide (OSG) must be referenced. It is also vital to show a deeper understanding of the values calculated. This is achieved by referring to BS 7671 and stating the maximum allowed values.

Step 1: Calculating Ib, the design current.
Some form of circuit power will often be given in a question. This can then be used in the following formulae to calculate the design current.

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