Performance requirements and composition of casting systems in equipment for generation, transmission and distribution of electrical power.Cross References:BS 2782:Part 1:Method 121ABS 2782:Part 2:Methods 220 and 221BS 2782:Part 2:Method 221ABS 2782:Part 2:Methods 240A and 240BBS 2782:Part 3:Method 335ABS 2782:Part 4:Method 430A