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Table 1. Estimated effects of 60 Hz AC currents* 8 {4 s- {- _6 b( N2 X4 x
+ p' A5 x+ B: J9 T- P* T. f1 X
1 mA Barely perceptible 1 w$ Z& k6 M6 e: z# j
16 mA Maximum current an average man can grasp and “let go” 0 [0 q( M" @/ Y; Z
20 mA Paralysis of respiratory muscles 2 f, b0 o( U6 G
100 mA Ventricular fibrillation threshold
+ [; I! b: O$ C/ y2 A Cardiac standstill and internal organ damage
: p, d" o! W5 n# }' z( E/ R15/20 A Common fuse breaker opens circuit† 7 c6 w+ p. ?( f, b9 c3 g& y/ w
' ?+ g# A* v3 @$ ^) R) L; o
*From NIOSH.1 " @5 }" R! e8 D
†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.
% u& ?2 v% m7 Z1 }; e4 l1 k4 Ahttp://www.eplasty.com/index.php ... ume-09-eplasty-2009 |
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