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Original General Order 95

 

Section XI

 

Supply Lines or Communication Lines Crossing over Railroads

 

114    Insulators For Supply Conductors

 

Where grounded pins are used at crossings with ungrounded construction being used at other parts of the line, the insulators used on such grounded supports shall have a rating of 25% greater than the flashover voltage values of the line insulators used on ungrounded pins, except where these values exceed those specified in Table 12,Rule 55.3 , by 50%. As an alternative, the conductors at their points of attachment, where suspension insulators are used, may be protected by arcing shields.