The Valuation for Rating (Plant and Machinery) Regulations 1989

CLASS 1A

Machinery and plant specified in Table 1A (together with any of the appliances and structures accessory to such machinery or plant and specified in the List of Accessories) which is used or intended to be used mainly or exclusively in connection with the generation, storage, primary transformation or main transmission of power in or on the hereditament.

“Transformer” means any plant which changes the pressure or frequency or form of current of electrical power to another pressure or frequency or form of current, except any such plant which forms an integral part of an item of plant or machinery in or on the hereditament for manufacturing operations or trade processes.

“Primary transformation of power” means any transformation of electrical power by means of a transformer at any point in the main transmission of power.

“Main transmission of power” means all transmission of power from the generating plant or point of supply in or on the hereditament up to and including–

(i) in the case of electrical power, the first transformer in any circuit, or where the first transformer precedes any distribution board or there is no transformer the first distribution board;

(ii) in the case of transmission by shafting or wheels, any shaft or wheel driven directly from the prime mover;

(iii) in the case of hydraulic or pneumatic power, the point where the main supply ceases, excluding any branch service piping connected with such main supply;

(iv) in a case where, without otherwise passing beyond the limits of the main transmission of power, power is transmitted to another hereditament, the point at which the power passes from the hereditament.

TABLE 1A

(a) Steam boilers (including their settings) and chimneys, flues and dust or grit catchers used in connection with such boilers; furnaces; mechanical stokers; injectors, jets, burners and nozzles; superheaters; feed water pumps and heaters; economisers; accumulators; deaerators; blow-off tanks; gas retorts and charging apparatus, producers and generators. (b) Steam engines; steam turbines; gas turbines; internal combustion engines; hot-air engines; barring engines. (c) Continuous and alternating current dynamos; couplings to engines and turbines; field exciter gear; three-wire or phase balancers. (d) Storage batteries, with stands and insulators, regulating switches, boosters and connections forming part thereof. (e) Static transformers; auto transformers; motor generators; motor converters; rotary converters; transverters; rectifiers; phase converters; frequency changers. (f) Cables and conductors; switchboards, distribution boards, control panels and all switchgear and other apparatus thereon. (g) Water wheels; water turbines; rams; governor engines; penstocks; spillways; surge tanks; conduits; flumes; sluice gates. (h) Pumping engines for hydraulic power; hydraulic engines; hydraulic intensifiers; hydraulic accumulators. (i) Air compressors; compressed air engines. (j) Windmills. (k) Shafting, couplings, clutches, worm-gear, pulleys and wheels. (l) Steam or other motors which are used or intended to be used mainly or exclusively for driving any of the machinery and plant falling within this Class.