public installation "public installation" means an installation operated by a licensee for the supply of electricity to any person other than the licensee: Provided that the licensee may use electricity for his own purposes where the use is consistent with the terms of the licence; [Am. Act A1116 - Prior text read - ""public installation" means an installation operated by a licensee for the supply of energy to any person other than the licensee: Provided that the licensee may use energy for his own purposes where the use is consistent with the terms of the licence;"] ACT 447 - ELECTRICITY SUPPLY ACT 1990 2. Interpretation.