CWEA Maintenance Technologist Practice Test 2026 – Complete Exam Prep

Question: 1 / 400

What could potentially burn the insulation on the supply connections at a motor starter?

Overvoltage

Heat exposure

Poor contacts or loose connections

The potential for insulation on the supply connections at a motor starter to burn can largely be attributed to poor contacts or loose connections. When connections are not secure, they can create a resistance point in the electrical circuit. This resistance can cause localized heating due to the current passing through it, which may lead to excessive heat generation. If the heat produced exceeds the tolerance of the insulation material, it can result in breakdown and burning of the insulation, consequently jeopardizing the integrity of the electrical system and final functioning of the motor starter.

Other factors like overvoltage, heat exposure, and high humidity have their impacts on electrical systems, but the specific scenario of burning insulation due to inadequate connections highlights the significance of maintaining proper contact integrity to ensure safe operation.

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High humidity

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