insulated

(electricity) Separated from other conducting surfaces by a nonconducting material.

1. Building, column, or other work standing detached so that all sides of it are visible, as in the peristyles of Greek temples, but unlike a pseudo-peripteral Roman temple where the columns around the cella are engaged.

2. Kept apart and separate, to assist sound-proofing, retention of heat, prevent contamination, etc.