insulated

1. (of an electrically conducting material) Isolated or separated from other conducting materials, or sources of electricity.Examples: "Early insulated wires were covered in silk rather than plastic."; "Speed by now was now down to 25 m.p.h., but that universal tool, the insulated screwdriver, with its business end gingerly applied to the relay coil, enabled us to keep going as far as Grantham, where a more permanent remedy could be effected."

2. (astronomy, dated) Situated at so great a distance as to be beyond the effect of gravitation; said of stars supposed to be so far apart that the effect of their mutual attraction is undetectable.dated