annual rate contract for supply of three core copper conductor flexible pvc insulated and sheathed flat cable annual rate contract for supply of three core copper conductor flexible pvc insulated and sheathed flat cable , supply of three core copper conductor flexible pvc insulated and sheathed flat cable for working voltages upto and including 1100 volts without earth continuity conductor suitable for outdoor use ( submersible motor pumps ) for the following nominal cross-sectional area generally conforming to is: 694:1990 ( reaffirmed 1995 ) revised as is: 694:2010 or its latest amendment ( s ) . , 10 sq. mm. , 16 sq. mm. , 25 sq. mm. , 35 sq. mm. , 50 sq. mm. , 70 sq. mm.