Lighting society elects new president

  On 1 July this year, Robert Henderson succeeded Greg Marcia as president of the Illumination Engineering Society of South Africa (IESSA). Vector spoke to him about his long association with the society, what the future holds for the lighting industry, and about the changes in store for the society. Henderson joined the former Institute […]

Vector Inbox June 2014

  Submit your letters to vector@ee.co.za and be in line to win a prize. This month, a reader responds to Prof. Philip Lloyd’s Lead Editorial, “Just what is ‘sustainable development’?” (see Vector, May 2014). Our winning letter Dear Editor I would like to offer comment on Prof. Philip Lloyd’s letter about sustainable development. I am […]

Q&A: Ask an expert

  In this article, we talk to IESSA technical adviser Connie Jonker about LEDs and find out whether cost-benefit studies have been conducted on them; whether manufacturers’ temperature-rise and lifetime claims hold truth, and whether we should be concerned about some imported LEDs, among others. Are there cost-benefit studies available on these lighting sources? Cost […]

The role of engineers and the technical media in civil society

  This paper was presented on 6 April 2014 by Chris Yelland, managing director at EE Publishers, at the Civilution Congress 2014 held at Emperors Palace, Kempton Park, South Africa, from 6 to 8 April 2014. Background to the prevailing environment First some background on the prevailing environment in which we find ourselves as engineers […]

Vector Inbox April 2014

This month, our readers warn that personal liability has been imposed for non-payment of pension funds; respond to issues on the new IEC164-6 plug and socket configuration and explain why VC9012 only covers portable luminaires and luminaires which are handled frequently. Our winning letter Re: IEC164-6 plugs, sockets: why re-invent the wheel?”, Vector, March 2014 […]

Q&A: Ask an expert

In this article, we talk to IESSA technical adviser Connie Jonker about the claims made about energy-saving lamps; how the user should decide between LED and CFL; whether the wattage and efficiency claims are tested, and on the effect they have on power factor. Can the end-user have faith in the claims made about “energy […]