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Table 1. Estimated effects of 60 Hz AC currents* : F M7 s0 E; D( O* Z. K5 r
4 B# ^& o" E6 _! D5 ]8 `1 mA Barely perceptible
1 O2 G& X8 A5 Y1 N! v16 mA Maximum current an average man can grasp and “let go”
' |! J* ?/ S w k20 mA Paralysis of respiratory muscles
% C2 d5 S. e! O100 mA Ventricular fibrillation threshold 5 ]0 t; W, E9 P9 Q$ B
2 A Cardiac standstill and internal organ damage 2 P. o' L. l" u I6 g
15/20 A Common fuse breaker opens circuit† ; E% s v/ q! H0 x7 Q
! k7 M" E5 @$ V( E# N*From NIOSH.1
; j# r( P) R$ n; 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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