This Standard specifies requirements for:(a) Storage water heaters heated solely by electricity (hereinafter called 'water heaters') having rated hot-water deliveries within the range 25 L to 630 L and having heating units of the tubular-sheathed immersion type or the bobbin type.NOTES: Where non-electric supplementary heating, e.g. from a solar collector or a slow combustion stove, is used,additional requirements may be necessary.(b) Gas storage water heaters by cross-reference to Code AG 102 published by The Australian Gas Association and the Australian Liquefied Petroleum Gas Association (see Clauses 1.3.2 and 1.5.2).This Standard does not apply to heat-exchange water heaters (see AS 1361).NOTES:1. Water heaters having deliveries in excess of 630 L generally have special requirements. Intending purchasers of such water heaters are advised to include in their specification such requirements of this Standard as are relevant to their needs.2. For the installation of household type hot-water systems, see AS 3500.4.3. Information to be supplied with enquiries and orders for electric water heaters is given in Appendix A.