Electricity theft is a widely underestimated problem. The thieves see their actions as a minor crime, or even as a sporting challenge, but the resulting losses have to be paid for.

Things were rather different back in 1935 when Evershed and Vignoles, one of the predecessor companies of Megger, sponsored a paper with the somewhat surprising title “The Electrical Resistance of Pork and Bacon”.

One of the consequences of today’s relatively open energy market is that there is a need to monitor exactly how much energy is produced by each of the numerous energy suppliers to ensure the revenue from sales is distributed equitably.

DC resistance measurement is an important weapon in the armoury of every engineer involved with the testing of power transformers but, to achieve reliable results quickly and safely, it is essential to use an ohmmeter. This article discusses why.