A generator is made of iron, copper, carbon, and insulation.
Yet here in the turret, unguarded by insulation, I could say nothing.
The insulation is not what keeps the wire cool, as you can see by the next experiment.
The insulation resistance was better than the best known to Earth's science.
The insulation of the heavy copper connectors is by means of ebonite.
Inside, Stan knew, lay complex circuitry, traced into the insulation.
Take care that the edges of this hole do not cut the insulation.
They require some depth, and insulation, so that they are usually finished in brick or stone.
It was clear that Rhode Island could not long preserve her insulation.
A small portion of the insulation is removed from the wire on one side of the coil.