Understanding Transformers - Single Phase Transformer

Understanding Transformers - Principle of operation

Understanding PVC Conduit and its Accessories:

Understanding common South African Cables(as per Aberdare)

Understanding Electrical Component Identification and Selection

Understanding Fibre-cement pressure pipes and couplings

Understanding corrosion of metals and alloys–Determination of dezincification of resistance of brass

Understanding Rubber seals–Joint rings for water supply, drainage and sewerage pipelines–Specification for materials.

Understanding the installation, maintenance, replacement and repair of fixed electric storage water heating systems.

Understanding the installation, maintenance, repair and replacement of domestic solar water heating systems.