Lateral light distributions are classified by IES distribution Types I, II, III, IV and V. In general, the larger the number, the more is projected across the roadway. This allows the lighting designer to select the appropriate distribution pattern for
A tap-off line to take primary distribution from the main power line to a nearby load center.
Information about the chosen lamp and its lumen depreciation and mortality are available from lamp manufacturers’ literature. Rated average life should be determined for the specific hours per start; it should be known when burnouts occur in the lamp lif
The condition where the current is delayed in time with respect to the voltage in an ac circuit (for example, an inductive load).
One of the IEC 61131-3 programming languages.