New York State Master Electrician Practice Exam

What type of raceway should be used at hinges for a boathouse ramp that adjusts with tides?

1. PVC conduit

2. Rigid metal conduit

3. Flexible non-metallic conduit

4. Liquidtight flexible metal conduit

The correct answer is: Liquidtight flexible metal conduit

The situation presented in this question involves a boathouse ramp that adjusts with tides, indicating a need for flexibility and resistance to environmental factors such as moisture and movement. Liquidtight flexible metal conduit is particularly well-suited for this application because it combines flexibility, which is essential for areas that experience movement, with a durable outer metal layer that provides protection against physical damage and corrosion. This type of raceway is designed specifically for installations where exposure to dampness or moisture is a concern, making it ideal for environments like boathouses, where water exposure is common. Additionally, the liquidtight feature ensures that any internal wiring remains protected from water ingress. The flexible nature of the conduit allows it to accommodate the movement of the ramp as it adjusts with the tides, ensuring that connections remain intact and safe. In contrast, other types of conduits, such as PVC, rigid metal, and flexible non-metallic conduits, may not provide the same level of waterproof protection or flexibility needed for this specific scenario. For example, while PVC is non-corrosive and may handle moisture well, it lacks the durability required for areas subject to physical impact. Rigid metal conduit is not flexible, making it unsuitable for applications that require movement. Flexible non-metallic conduit