Why is a personal voltage tester used?

A personal voltage tester is used primarily to confirm the absence of voltage before beginning work on electrical systems. This is a crucial safety procedure for linemen and electricians to ensure that the equipment is de-energized and safe to work on. Conducting this test helps prevent electrical shock or injury that can occur if a worker inadvertently interacts with live circuits.

The design of personal voltage testers allows users to quickly and effectively determine whether voltage is present at the work site. If the tester indicates no voltage, workers can proceed with greater confidence, knowing that they are not at risk of electrocution.

The other choices do not accurately reflect the primary purpose of a personal voltage tester. Enhancing electrical conductivity, measuring current in a circuit, and checking the alignment of wiring are tasks associated with different tools and equipment rather than voltage testing. Thus, confirming the absence of voltage stands as the critical and correct function of a personal voltage tester.