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Table 1. Estimated effects of 60 Hz AC currents*
0 d8 k) M, I: z; O. l! _* ~4 C4 u + K$ w. }/ D4 y o" [. u( H5 K0 l
1 mA Barely perceptible
/ W) i" {. `# `: c) g16 mA Maximum current an average man can grasp and “let go” ' y( k6 p( Z0 E. J$ J& o* y) i3 J( ]
20 mA Paralysis of respiratory muscles
( g) q: e8 A* Y. Q100 mA Ventricular fibrillation threshold
( B& X7 b- v9 b0 \- X. C; _2 A Cardiac standstill and internal organ damage
) {+ [5 A. k7 {4 j/ ?2 j( E, V4 G15/20 A Common fuse breaker opens circuit†
7 R+ D7 q( p0 g( m8 s5 m
0 R! X/ b! n% {*From NIOSH.1
1 m- J7 Y8 o7 I6 Y6 _†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. 3 ?; n% w8 k; F8 @# W' ]
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