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Table 1. Estimated effects of 60 Hz AC currents* 2 t: j& ?5 l% J3 B
; m. f; Z: n( U8 N& G$ Y1 mA Barely perceptible 5 m/ I& m+ i; e5 ]$ g) T" \
16 mA Maximum current an average man can grasp and “let go”
& b p/ c6 r& F) `20 mA Paralysis of respiratory muscles
P7 @* W3 q1 M# y. C' @100 mA Ventricular fibrillation threshold
# @6 n, p# J* L- |2 A Cardiac standstill and internal organ damage
5 r$ w2 L6 R. n! j* L15/20 A Common fuse breaker opens circuit† 9 N$ }" T0 `, n3 }3 |; s- |
" ]$ e' H' Q. l
*From NIOSH.1 B) ?* `7 M( c% m
†Contact with 20 mA of current can be fatal. As a frame of reference, common household circuit breaker may be rated at 15, 20, and 30 A.
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