|  | 8.10 | Network Power Supply Issues: Power Line Problems
| 8.10.1 | Power problem classifications
There are three wires in a power cable, and problems that occur in the cable are labeled according to the particular wire(s) that are affected. If a situation exists between the hot and neutral wire, this is referred to as a normal mode problem. If a situation involves either the hot, or neutral wire, and the safety ground wire, it is referred to as a common mode problem.