Abstract
The paper extends an earlier paper in giving details of operating experience of some of the early networks in the London area and draws attention to their limitations and advantages at the time. It mentions the strongly held views of certain engineers of the advantages of AC over DC and the later efforts of some undertakings to use established DC network cables to supply AC. The use of pilot cables and substation instrumentation is mentioned, as are some of the methods of fault-location on the networks. The interconnection of cables at street corners gave rise to the construction of large manholes, with the ever-present need to seal pipes against entry of gas and water. The end of central-station generation came with the development of power networks such as that of the London Power Company, and the replacement of steam and diesel generators with three- or two-phase bulk-supply transformers. Some undertakings used to make their own cable-joint boxes and distribution boards, but the many manufacturers competing for business could be relied upon to produce almost any item of switchgear or control equipment required to meet a specific need. The paper touches on sales promotions to increase load and units sold, and mentions metering and early wiring installations.
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