NEC Commercial Electrical Practice Test

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Prepare for the NEC Commercial Electrical Test with multiple choice questions each with detailed explanations. Study efficiently to excel in your exam!

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What is the maximum weight for ceiling-suspended (paddle) fans that requires independent support from the outlet box?

20 lb.
30 lb.
35 lb.
50 lb.

The correct answer is: 35 lb.

When considering the maximum weight for ceiling-suspended paddle fans that necessitates independent support from the outlet box, the correct weight limit is 35 pounds. This is rooted in the National Electrical Code (NEC) requirements, which specify that ceiling fans that exceed 35 pounds must be supported by structural members other than the outlet box. The rationale behind this regulation is to ensure safety and structural integrity. An outlet box, typically made of lighter materials, is not designed to bear the load of heavier fans on its own. If a fan weighs more than this threshold, there is a risk that mounting it solely to the outlet box could lead to failure, potentially resulting in damage or injury. Therefore, if you are installing a ceiling fan weighing 35 pounds or less, it is sufficient for it to be mounted directly to the outlet box, provided the box is rated for fan support. However, any fan exceeding this weight must have separate support systems in place to distribute its load more effectively.