Information on Voltage

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What is Power/Voltage Optimisation ? - This page explains Power/Voltage Optimisation, Common Power Quality Problems, Over Voltage, Harmonics, Transients, Phase Voltage imbalance, Power Factor and Reactive Power, Effects on Electrical Load, Lighting, Energy and Emission Savings.

Plugs and Voltages around the World - This page lists all the types and plugs from around the World, the voltage and Cycle with notes.

Images of Plugs and Sockets around the World - This page show pictures of all the plugs and sockets from around the World mentioned in 'Plug and Voltages around the World'.

Problems in Main AC Power Lines - This page explains various types of AC power problems such as: Over and Under Voltage, Spikes, Surges, Sags, Brownouts, Blackout, Noise and Harmonic Distortion.

Voltage levels around the World - This page explains the history of voltage around the World.