• Physically separate the multiple lines of 2-phase and
3-phase circuits before testing them.
• Do not use the VR40 if it appears to be damaged or
malfunctioning.
• Do not expose the tester to temperatures above
113°F (45°C), relative humidity greater than 95%, or
voltages higher than 600V.
• Do not use the VR40 to test for the presence of DC
voltage.
• Do not use the unit to test for the presence of AC
voltage on a shielded conductor, behind a wall or
conduit, or under soil.
• Keep your fingers well behind the tip when
performing a test. Never touch any conductor with
your hand or skin until you have confirmed that it is
not “hot”. To repeat: whenever you have reason to
believe that a line or outlet is “hot”, measure its
voltage with a multimeter or clamp meter.
8
