Contributors
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DAVID HERRES: Gaining a laser focus
Despite the teachings of Austin Powers, lasers aren’t just designed to be attached to sharks’ heads. Electricians use them too. David Herres explains. -
BOB HARPER: 3-phase theory recap
When three-phase motors are grouped on a line, things can get way out of balance. Bob Harper reports. An electrician friend who works in a rural ... -
JOHN KONSTANTAKOPOLOUS: The building envelope, part 2
The correct installation of LED downlights balances safety, energy efficiency, lamp life, fire ratings and soundproofing. John Konstantakopolous explains. In part one of this two-part series ... -
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.
