Probable Effect Concentration Quotients (PECQS) Practice Test

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What is the minimum required clearance between recessed fluorescent luminaires and storage spaces?

100 mm
125 mm
150 mm
175 mm

The correct answer is: 150 mm

The minimum required clearance between recessed fluorescent luminaires and storage spaces is set to ensure safety and compliance with electrical codes and standards. A clearance of 150 mm is specified to prevent any potential fire hazards or overheating issues that might arise if storage items are placed too close to the fixtures. This distance allows for proper air circulation around the luminaires, reducing the risk of heat buildup that could ignite stored materials or create a hazardous environment. Additionally, the 150 mm clearance is a standard adopted in many building codes, reflecting best practices in fire safety and electrical installation. Other distances like 100 mm, 125 mm, or 175 mm may not align with these safety regulations, either being insufficient to avoid risks or exceeding what is necessary, potentially leading to unnecessary restrictions in usable storage space. Thus, the choice of 150 mm balances safety with practicality.