Aircraft quality wire is manufactured to MIL-W-22759/16 specs. This 20 gauge wire features standard tin-plated copper conductor with Tefzel insulation.
20awg yellow with red stripe Tefzel wire is rated for 7.5 amps
Wire is rated for 600 volts rms & 150 degrees C.
FAA AC43.13-1B recommends 7.5 amp CB protection for 20 awg wire.