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Group replacement

Select the most correct statement for
Group Replacement System
A. Used in stadium installation
B. Desirable for lower installation costs
C. Following burnout, system is used when lamps are replaced
D. Extends lamp life by operating under voltage

AnswerD. Extends lamp life by operating under voltage. Group replacement is an advantageous maintenance scheme for large areas of lighting with no interim relamping necessary. Individual burnouts are ignored until a critical number is reached. C. refers to spot replacement, relamping when individual lamps no longer function.
ARE 4.0 exam prep: BS

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