Cable Size UK: BS 7671 sizing

Cable Size UK - The Calculator That Shows Its Working Free calculators give you a number. Cable Size UK gives you the chain of reasoning: design current, protective device check, correction factors, the minimum tabulated capacity your cable must meet, and volt drop as a value and as a percentage of nominal. The intermediate values are what an inspector asks for, so a result can be transcribed onto a design or a certificate and defended during an inspection. HOW IT WORKS Enter the circuit details: the load and supply, the protective device rating, the correction factor values that apply to the installation, and the cable's volt drop figure and run length. The app works through the calculation in the order the method describes and shows every step, so you can check the working rather than trust a black box. WHAT IT CALCULATES - Design current (Ib) for single and three phase loads, entered…