Regulation 2 Original text. Later amendments are not shown. In these Regulations, “the principal Regulations” means the Wireless Telegraphy (Control of Interference from Household Appliances, Portable Tools etc.) Regulations 1978f1. Annotations Footnotes f1 S.I. 1978/1267, as amended by S.I. 1985/808. ← Regulation 1 Regulation 2 Regulation 3 →