Contributors
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Chasing the perfect wave
Oscilloscopes may be a bit harder to master than your standard multimeter, but the results are well worth the trouble. David Herres explains. -
Big trouble in little diode
Success in fixing appliances and other electronics will enhance your reputation as a skilled technician, and in the long term offer significant billable hours. David Herres ... -
One strike, part two
In the first part of this series, George Georgevits explained lightning, what causes it and the results of a lightning strike. He now outlines its effects ... -
Customising labour units
Labour allocation for a particular job is the most difficult task an estimator has to do in order to arrive at a competitive tender that will ... -
A fridge full of opportunity
Poor maintenance of refrigeration systems can jeopardise the food industry’s thin profit margins. Phil Kreveld begins a series on cool opportunities for electrical contractors. -
Killer clones from overseas
Phoney Rolex watches may be fun holiday items but a ripped-off electrical fitting could wipe out an entire household. Bob Harper outlines the dangers. -
Wiring Rules and swimming pools
Swimming pools and spas are great family fun, but associated electrical works need special care. Gary Busbridge outlines the safety essentials. -
The different types of sparky
New methods and materials, plus the full-scale arrival of the ‘cyber age’, have resulted in rapid changes to the electrical industry, and there is every indication ... -
Power loss, business gain
Preventing power wastage can generate additional work, writes Bob Harper. Contractors should use the energy-awareness argument on existing and potential customers. -
The protective role of RCDs
The common safety switch, as found in homes, is effective in protecting against dangerous leakage current but is generally unsuitable for many industrial applications. Phil Kreveld ...
