If packing fails on a submersible pump, what happens to the electric motor?

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Prepare for the ADEQ Wastewater Collections 2 Exam with comprehensive flashcards and multiple choice questions. Hone your skills with detailed hints and explanations for each question. Excel on your exam with confidence!

Multiple Choice

If packing fails on a submersible pump, what happens to the electric motor?

Explanation:
Packing around the shaft keeps water out of the motor housing. When that packing fails on a submersible pump, water can seep into the motor and create an unintended conductive path between windings or to the motor frame. That sets up a short circuit, causing a high current fault that essentially shorts the motor. So the immediate and best-described outcome is that the motor shorts out. Overheating could happen as a consequence later, and overload protection might trip, but the direct effect of packing failure is the short caused by water intrusion.

Packing around the shaft keeps water out of the motor housing. When that packing fails on a submersible pump, water can seep into the motor and create an unintended conductive path between windings or to the motor frame. That sets up a short circuit, causing a high current fault that essentially shorts the motor. So the immediate and best-described outcome is that the motor shorts out. Overheating could happen as a consequence later, and overload protection might trip, but the direct effect of packing failure is the short caused by water intrusion.

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