The wiring allowance provided on sheet metal to wrap around the wire to a make wired edge is determined by the following formula, where d = diameter of the wire and t = thickness of sheet metal
a) (2.5 × d) + t
b) (1.5 × d) + t
c) d + t
d) (0.5 × d) + t
1
a
2
b
3
c
4
d