1 Words to use with insulation

" Cornell having thus cleverly cut the Gordian knot, it was decided to string wires on poles, and Cornell himself thus describes the solution of the insulation problem: "In the latter part of March Professor Morse gave me the order to put the wires on poles, and the question at once arose as to the mode of fastening the wires to the poles, and the insulation of them at the point of fastening.

1 Words to use with  insulation