How to Archives

Category: How to

An explanation on the varying methods of wiring light fittings and ceiling roses.

RJ45 pinout connections and wiring diagrams for cat5, cat5E and cat6 data cables.

A complete guide to resistor colour codes and calculating resistor resistance values.

DC voltage drop calculator for calculating the solar PV string DC voltage drop.

How economy 7 immersion heaters work with off-peak and peak rate immersion heaters and how to control them.

Y Plan wiring diagram for fully pumped central heating & hot water systems.

S Plan wiring diagram for fully pumped central heating & hot water systems.

Calculate the Maximum Demand with this new cloud software.

Light switch connections and wiring diagrams for 1 way, 2 way and intermediate light switches for UK wiring colours.

Convert Zs values from a previous version of BS 7671 to BS 7671 18th edition 230v Cmin values.