This is has become a topic of discussion, earth leakage types and which to install.

Taking a look at the various types sold here in SA, it seems many people are not aware that there are different types of earth leakage units.

I also read many posts regarding "nuisance" tripping and wonder if the person has taken the type of earth leakage into account, or considered the equipment installed on site, appliances, etc.

I copied this from the CBI website, it is interesting to note that CBI earth leakage units are in fact Type A generally sold at the wholesaler.

Application

  • Residential and commercial applications requiring high sensitivity earth leakage protection from electrical shock and fire hazards
  • Earth Leakage protection (IEC / EN 60947-2)
  • Telecom / Datacom equipment
  • Lighting control
  • UPS equipment
  • Alternative energy equipment
  • Mobile power generation equipment
  • Railway signalling equipment
  • Industrial equipment