Contributors
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The benefits of natural gas-powered air conditioners
Most 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 ... -
Electrical bonding systems in portable generators
An electrical bonding system is crucial in a portable generator, and an RCD trip will warn of faults at the appliance end. Gary Busbridge explains. -
Safeguarding electrical installations from lightning strikes
Safeguarding electrical circuits and systems from lightning is crucial. In part one of this topic, George Georgevits analyses nature’s power. -
What is the smart grid?
When it becomes fully implemented, the smart grid will resemble an energy Internet, perhaps eventually worldwide. -
The tender process, part 1
In part one of this three-part series, Brian Seymour looks at the bare essentials of the tendering system. -
The A-Z of transistors
Transistors may be small but they are an important part on an electrical circuit. David Herres explains. -
The lucrative business of refrigeration systems
Attending to the electrical components of refrigeration systems is good for contractors, but there are other aspects that can be quite lucrative. Phil Kreveld explains. -
Back to basics… revisiting Ohm’s Law
Electricians 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. -
Heat pumps 101
Heat pumps, powered by the sun, have proved to be more efficient than their electric counterparts. Bob Harper explains. -
The dangers of broad or inadequate specifications in electrical installations
Broad or inadequate specifications for an electrical installation can cost a lot more than specialist advice at the planning stage. Phil Kreveld explains.
