To safely use a volt-ohm meter, make sure the right settings are in place and pay attention to the black and red colors. Learn more about using a volt-ohm meter safely with tips from a general contractor in thisfree home maintenance video. Expert: Oscar Moreno Contact: www.morenohomevisions.com Bio: Oscar Moreno is the owner of Moreno Custom Home Visions in Austin, Texas. Filmmaker: Todd Green