Annual report 1912 . ding and pole line details. Lightning Protection Considerable trouble has been experienced by the use of certain types of light-ning arresters which have been installed in different parts of the system. Investi-gations have been made, experiments performed and as a result designs for a 13,200volt arrester have been prepared from which one will be constructed and tried outin the system. Service Transformers An engineer visited the works of different transformer manufacturers inCanada and in the United States for the purpose of investigating and inspectingtheir methods of ma
Annual report 1912 . ding and pole line details. Lightning Protection Considerable trouble has been experienced by the use of certain types of light-ning arresters which have been installed in different parts of the system. Investi-gations have been made, experiments performed and as a result designs for a 13,200volt arrester have been prepared from which one will be constructed and tried outin the system. Service Transformers An engineer visited the works of different transformer manufacturers inCanada and in the United States for the purpose of investigating and inspectingtheir methods of manufacture. A report was made dealing with the detailed con-struction of each type. This report will, no doubt,.prove valuable in the purchaseof transformers for distribution purposes. 36 FIFTH ANNUAL HEPOKT OF No. 47 WOOD POLE TRANSMISSION During the past year approximately 160 miles of wood pole lines were constructions necessitated the employment of an average of six gangs of «5->e- 13. i to 3** N fc-r* I 5* «^ *-JLX&st/.crp 1^21 3£x4&rm, Ccfrr/c/fe 60//- Grouoc/ ///
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