Flashover tests on 26-kv wood pole structures

Results of a series of impulse and dynamic flashover tests on unit pole transmission construction now in standard use on a large 26-kv electric power transmission system are presented herewith. From the data obtained the net flashover voltages of wood and porcelain combinations of simple pole tops can be estimated. With the aid of data now available it is possible to design a wood pole line having almost any practical degree of lightning reliability.