Which equipment installed below ground should be protected by covering and braiding, location or guarding, or raised installation?

• A. Only transformers
• B. Transformers, switches, motor controllers, motors, rectifiers, and other equipment
• C. Only cables
• D. Only conduits

Answer: (B)

Underground equipment needs protection because it’s exposed to physical damage, moisture, and soil contact. Using coverings, braiding, guarding, or raising the equipment above grade are practical ways to reduce these risks and keep the gear safe and reliable.

The best choice reflects a broad approach: any equipment installed underground—such as transformers, switches, motor controllers, motors, rectifiers, and other devices—should be protected. Limiting protection to just transformers, only cables, or only conduits misses the wide range of equipment that might be buried or installed below ground, so those options are incomplete.