New home construction is wired a lot differently than it used to be, using well-insulated, grounded cables. Still, they must be installed correctly in order to ensure that they don’t create unsafe situations. Inspectors should know the differences between the types of cables commonly found in homes and be able to spot defective installations. They should also be prepared to encounter wiring systems that are very old and obsolete. Take a look at our new article on common types of electrical wiring to find out more.