Contributors
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CHRIS HALLIDAY: Is calibration of test instruments important?
Should test instruments be checked for calibration and, if they aren’t, what are the risks? Chris Halliday sorts out the madness. Electricians use various test instruments, ... -
Understanding medical installations
Medical installations require particular experience and an understanding of special requirements. Gary Busbridge explains. The medical installation is a mystery all on its own. It seems ... -
CIS/CIGS solar panels explained
Thin film technology could turn most of a building into a solar collector. Phil Kreveld reports. Thin film photovoltaic (PV) panels are making their presence felt ... -
On the tools: Field effect transistors
Field effect transistors are constructed similarly to transistors and diodes, but they have specific characteristics that pose unique challenges to electricians. David Herres explains. -
How to repair elevators
Every 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 ... -
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.
