Paragraph 3 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 The symbol shall not occupy more than 50% of the area within the triangle. ← Paragraph 2 Paragraph 3 Paragraph 4 →