Just as with other electric power generation, PV systems present the risk of shock and electrocution when current takes an unintended path through a human body. Current as low as 75 milliamps (mA) across the heart is lethal. The human body has a resistance of about 600 ohms. Per Ohm’s law,voltage (V) equals. .
As with any electrical system, fire is always a potential hazard. Perhaps one of the most common causes is electrical arc faults,which are high power discharges of. .
Large-scale PV arrays with medium and high levels of voltage are susceptible to arc flash. This is especially true when a technician is checking for faults in energized. .
Protecting your workers and your PV system from electrical hazards requires adherence to safe work practices and ensuring that your equipment is rated to withstand. .
Michael Ginsberg is a solar expert, trainer for the U.S. Department of State, author and Doctor of Engineering Science candidate at Columbia University He is also. [pdf]
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