Q: What is the shock hazard when using the Safe-Test Point?

A: This finger-safe, high impedance device limits the available current at the test points. According to OSHA document 3075 (2002) page 7, “any shock hazard under 6mA is considered a slight shock; uncomfortable, but not painful.” Below you can see the currents are all well below the 6mA OSHA threshold:

Max fault current with Phase-to-Phase short between two test point jacks: 2.94 mA @ 600V

Max fault current with Phase-to-GND short on a 600V system : 3.40 mA (347 Volts)

Max fault current with Phase-to-Phase short between two test point jacks: 2.35 mA @ 480V

Max fault current with Phase-to-GND short on a 480V system : 2.71 mA (277 Volts)