Braid discharge in single conductor gable in ducts

Where single-conductor braided, cable is used in conduit, a discharge which may destroy the cable sometimes occurs between the braid and the duct. This can be prevented by the use of a metal covering, or with certain braids. Seine twine braid with weatherproof finish has given trouble in locations where flame-proofed asbestos braid has proved satisfactory. Asbestos braid is superior to cotton braid. The article cites actual experiences encountered, tests made, and remedies used. It is hoped that further thought will be given to this subject and a more satisfactory way found for preventing the trouble.