At 15 milliamps of current, the hazard is most likely to be what?

• A. Mild tingling
• B. Severe burns or heart effects
• C. Skin cooling
• D. No effect

Answer: (B)

Current through the body determines the kind of hazard you’ll encounter. At around 15 milliamps, most people feel a perceptible shock—usually described as a mild tingling or light sensation—rather than a dangerous injury. Severe burns or heart rhythm problems tend to occur at higher current levels and with longer exposure, especially with alternating current. Skin cooling isn’t the typical outcome at this level, and going with no effect ignores the noticeable sensation that 15 mA can produce. So the most likely effect at this current is a mild tingling.