Sizes of fuse carriers and bases for fuses where element is replaceable wire. For use in a.c. circuits. Three categories according to prospective current and time constant. For use at altitudes not exceeding 2000 m and temperatures averaging 35°C. Selection of fuses for different applications.Cross References:BS 88:Part 1BS 88:Part 2BS 88:Part 3BS 88:Part 4BS 88:Part 5BS 1361