Generating station, buildings, chimney shaft, £ water tanks, and general fittings 11,000 Dynamos and exciters—865 kilowatts, including spare sets, divided as convenient 5,540 Motive power, _i.e._, engines, boilers, steam and feed connections, belts, &c., at £8 12_s._ per I.H.P. 12,470 500 transformers, _i.e._, one to every pair of houses, at £15 each 7,500 2,000 yards primary or charging main, exterior to area of supply, at £308 per 100 yards 6,160 20,000 yards distributing main, 50 mm. sectional area, at £91 7_s._ (_see_ Table I.) 14,270 Regulating gear 500 ——————— £57,440 ======= B.T.—ACCUMULATOR TRANSFORMER DISTRIBUTION. Generating station, buildings, chimney stack, £ water tanks, and general fittings 8,000 Dynamos—600 kilowatts, in six sets of 100 kilowatts each 4,800 Motive power, _i.e._, engines, boilers, steam and feed connections, &c., at £8 12_s._ per I.H.P. 8,600 4 groups of accumulators, in all 240 cells, in series, at £40 per cell, including stands 9,600 2,000 yards charging main, at £306 17_s._ 6_d._ per 100 yards (_see_ Table II.) 6,137 20,000 yards distributing main, 161·25 mm. sectional area, at £100 12_s._ 6_d._ (_see_ Table II.) 20,125 Regulating gear 2,500 ——————— £59,762 ======= [6] Kilowatt equals 1,000 watts. TABLE IV. _Working Expenses and Maintenance of 10,000-Light, or 600-Kilowatt, Plant._