MIL-DTL-13169 Wire, Electrical \(For Instrument Test Leads\)This specification covers one type of single-conductor, AWG No 18, stranded, electrical wire, insulated for voltages up to and including 1,000 volts root mean square \(rms\) with Buna-S compound. Wire covered by this specification is classified as type TL-G. This wire is primarily intended for use as instrument test leads.