Subpart K Electrical . Long recognized as a serious hazard. Exposes workers to; electrical shock. electrocution. fires/explosions. fatalities and serious injuries. NEC TO OSHA Standard. OHM’S LAW. I= E/R E= Voltage I= Current R= Resistance
E= Voltage I= Current R= Resistance
(volts) (amperes) (OHMS)
I= E/R .05 amps 50V
(50 mA) = 1,000 OHM
.11 amps 110V
(110 mA) = 1,000 OHM
8-15 mA= Pain.
15-20 mA = Pain & muscle contraction.
30-100 mA= Severe pain and paralysis of
100-1,000 mA= Ventricular fibrillation.
(may cause death)
> 1,000 mA = Heart normally stops.
Body AreaResistance (OHMS)
Dry Skin 100,000 to 600,000
Wet Skin 1,000
Internal Body 400-600
Ear to Ear 100