C .Milk transfer pumps - shorted, corroded, or improperly grounded. C .Watering tanks - Deteriorated insulation and faulty heating elements can develop in electrically heated waterers. Feed and other organic materials often accumulate in waterers and their decomposition may be associated with DC voltages. They should be cleaned out weekly. C .Electric fences may be improperly grounded.
Dust can accumulate in electrical components.
There can be broken ground wires or other shorts. C .Poorly grounded or shorted telephone service. C .Faulty fluorescent lighting ballasts. When 220-volt motors are operated, the electric current flows through both hot wires but not through the neutral. If the second motor was operated from the second hot wire, current flow would be balanced and would not flow through the secondary neutral.