Contributors
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                                            On the tools: Field effect transistorsField effect transistors are constructed similarly to transistors and diodes, but they have specific characteristics that pose unique challenges to electricians. David Herres explains.
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                                            How to repair elevatorsEvery new multi-storey building has an elevator, which is a potential gold mine for electricians. David Herres explains the ups and downs of elevator maintenance and ...
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                                            The benefits of natural gas-powered air conditionersMost larger air-conditioning systems for domestic purposes are reversible in operation, thus providing heating and cooling. Most are electrically powered, and it is to a large ...
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                                            Electrical bonding systems in portable generatorsAn electrical bonding system is crucial in a portable generator, and an RCD trip will warn of faults at the appliance end. Gary Busbridge explains.
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                                            Safeguarding electrical installations from lightning strikesSafeguarding electrical circuits and systems from lightning is crucial. In part one of this topic, George Georgevits analyses nature’s power.
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                                            What is the smart grid?When it becomes fully implemented, the smart grid will resemble an energy Internet, perhaps eventually worldwide.
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                                            The tender process, part 1In part one of this three-part series, Brian Seymour looks at the bare essentials of the tendering system.
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                                            The A-Z of transistorsTransistors may be small but they are an important part on an electrical circuit. David Herres explains.
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                                            The lucrative business of refrigeration systemsAttending to the electrical components of refrigeration systems is good for contractors, but there are other aspects that can be quite lucrative. Phil Kreveld explains.
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                                            Back to basics… revisiting Ohm’s LawElectricians need to keep up-to-date with Ohm’s Law and several other mathematical theories in order to complete their day-to-day tasks. David Herres offers this refresher course.
 
                                                
