Let’s Get Technical
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kVA demand costs money
Modern revenue metering measures harmonic kVA demand in addition to reactive demand. Phil Kreveld sees a business opportunity for contractors. The transmission and distribution networks are ... -
On the grid
Solar panel arrays can be better distributed for maximum ‘collectible’ characteristics. Phil Kreveld discusses the principles. Solar photovoltaic inverters differ from other types, often battery driven, ... -
Shine a light on solar
The basic principles of photovoltaic systems make useful reading for non-specialist electricians installing all or part of a system. Phil Kreveld sets them out. Lots of ... -
Feed-in facts
As ‘distributed generation’ increases, there’s work to be done on power quality by electricity suppliers and the solar industry. Phil Kreveld reports. The growth of solar ... -
Chinese panels… they really do stack up?
Solar panels from China are not necessarily inferior, as they often use Western technology under licence. Phil Kreveld draws attention to other important quality and performance ... -
Battery storage for solar installations
Battery storage of solar energy is a reality, and the economics are just about there. Phil Kreveld reports. Storing the sun’s energy, which rates about one ... -
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 ... -
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 ... -
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.
