October Issue 2009


In some ways, there is no difference between small and large contractors. Each one earns...

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| October 2009
Article 110 Requirements for Electrical Installations; Article 230 Services; Article 300 Wiring Methods; Article 310 Conductors for General Wiring; Article 314 Outlet, Device,

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| October 2009
The National Electrical Code (NEC) contains many provisions where calculations are involved.

| October 2009
Bilevel switching, in which alternate rows, fixtures or lamps are separately circuited and independently controlled, has been demonstrated in one study to produce 22 percent

| October 2009
Establishing an equipotential zone at the work site—thereby protecting linemen working aloft and linemen, groundmen and equipment operators working on the ground during trans

| October 2009
ComEd is on a campaign against stealing electricity and issued a reminder about the public-safety risks associated with the illegal act.