Electric heating of water can be carried out in a variety of ways. These include small capacity heaters fitted above the sink, instantaneous sink heaters or immersion heaters in the hot water tank.
Small storage water heaters fitted over the sink or washbasin having capacities of up to about 3 gallons and electrical loadings of 1 to 3 kW are usually supplied from the ring circuit by means of a spur. Except in a bathroom, the outlet can be a fused plug and switched socket-outlet, preferably with neon indicator. Read the rest of this entry »
Storage heaters require a separate circuit for each heater. This is because, unlike direct acting heaters which are switched on and off as required, storage heaters are all switched on together during the 8-hour period. They cannot therefore be supplied from a ring circuit which is based on diversity of use of various appliances; each heater must have its own circuit. Read the rest of this entry »
Night storage heaters operate on the principle of thermal storage blocks being charged with heat during an overnight period when electricity is supplied at a lower price and releases the heat during the day when electricity is more expensive. Heat is stored during an 8-hour period starting at about 11 p.m. and ending at 7 a.m. the following morning. The times vary slightly between areas and some electricity boards have a 10-hour period starting at 9 p.m. An 8-hour period is sufficient to fully charge a heater. Read the rest of this entry »
