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When it comes to low-voltage and AC and DC difference in shock risk, many workers may be confused. Low-voltage is not defined by OSHA in regards to electrical safety and severity of shock. Related to low-voltage potential is the difference between AC and DC shock risks.

The Occupational Health and Safety Blog covers this topic, looking at the work practices and training for the definition of low voltage. The blog gives specific references that seem to imply that the regulatory ranges are as follows: >600 volts = high voltage; 50–600 volts is low voltage; and <50 volts (sometimes referred to as “extra-low voltage”) is generally not regulated except by NEC.

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Low Frequency RequirementsWhen, Where, and Why?

Did you know that as of January 1, 2014, a low frequency audible fire alarm signal is required in all sleeping areas of newly constructed hotel guest rooms and dormitory sleeping rooms?

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According to an article in Security Sales & Integration magazine, the most recent fiasco at the White House, where a man claiming to be an Iraq War veteran successfully climbed over the fence and then ran directly inside the White House unimpeded, simply defies the criticality regarding foreseeability of this threat. It

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