§ 182-16. Transformers.

Transformers must not be placed on any fixture on a roof or on any wall rising above a roof. Transformers must not be attached to the outside wall of buildings so that they can be reached by persons from windows, doors, fire escapes, stairways or the ground. The primary wires must drop to the transformer at right angles to the mains or branches. They must be heavily covered with the best grade of insulation, and that in turn with at least two braids of cotton. So-called "underwriters" and "weatherproof" insulation will not be approved.