Paragraph 1 Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below: sch. 1 para. 1 replaced by Electricity Supply 1990 sch. 1 para. 4 replaced by Electricity Supply 1990 A safety sign shall be of the design, and shall have the proportions, shown in the diagram below. ← Schedule 1 Paragraph 1 Paragraph 2 →