Conductor construction and application rules are outlined in Table 310.104(A) through Table 310.104(E) of the 2011 NEC. As noted in Table 310.104(A), THW insulation has a 90°C rating when installed ...

Insulation failure is the root cause of many electrical conductors and equipment failures. When insulation fails, not only can equipment be damaged, but fire and shock can also result. Ideally, when ...

As any lineman knows, transmission outages are hard to come by—especially with the tightening of federal rules and regulations. Even so, line crews must get their work done swiftly and safely to help ...

Key learning points Electrical charges What are free electrons? Cell polarity Conventional current direction Electrons orbit the nucleus. An atom has a neutral charge, because it contains the same ...