These requirements cover permanently installed electric water heaters@ rated 600 volts or less@ for heating the water supplied through plumbing to separately heated public or private pools or tubs@ in which swimming@ wading@ bathing@ or partial or total immersion of persons@ may be involved. Equipment covered may or may not be intended for use with external water circulating equipment@ and is intended for installation in accordance with the National Electrical Code@ NFPA 70. These requirements do not cover household storage tank water heaters or other equipment covered by individual requirements. Deleted June 25@ 2004