ABYC Marine Electrical Practice Exam

What should the classification of resin used in loom covering be at a minimum?

1. V-1

2. V-2

3. V-3

4. V-4

The correct answer is: V-2

The classification of resin used in loom covering should be at least V-2 to meet safety standards in marine applications. V-2 classification indicates that the material will extinguish itself within a specific timeframe (usually 30 seconds) after being subjected to a flame while allowing some dripping; this level of flame retardancy is important to reduce fire hazards on board. In marine environments, where exposure to moisture, temperature fluctuations, and potential ignition sources can occur, it is crucial for electrical insulation materials to have enhanced flame-retardant properties. A V-2 rating ensures that while the material can function effectively, it also provides a level of safety that helps reduce the risk of fire spreading within the wiring and loom. Choosing a resin with a lower classification may not meet safety protocols established by regulatory bodies, which is why V-2 is seen as the minimum acceptable standard in these scenarios. This helps ensure that vessels adhere to the required safety practices, protecting both the equipment and individuals on board.