*Question T0B10:
Which of the following is true when installing grounding conductors used for lightning protection?*  

*Correct Answer is  C: Sharp bends must be avoided*  

### AI Response: (may contain errors)  

When installing grounding conductors for lightning protection, it is crucial to ensure that the conductors are installed correctly to minimize the risk of damage and ensure safety. 

### Correct Answer: C - Sharp bends must be avoided

**Explanation:**
- Sharp bends in grounding conductors can create points of high electrical stress, which may lead to increased resistance and potential failure during a lightning strike. 
- Smooth, gradual bends help maintain the integrity of the conductor and ensure effective grounding.

### Why the Other Choices are Incorrect:

- **A: Use only non-insulated wire**
  - This is incorrect because while grounding conductors are often bare, insulated wire can also be used in certain applications. The key is to ensure that the grounding system is effective, not necessarily that the wire is non-insulated.

- **B: Wires must be carefully routed with precise right-angle bends**
  - This is incorrect because right-angle bends can create sharp corners, which are not ideal for grounding conductors. Instead, grounding conductors should be routed in a way that avoids sharp angles to reduce electrical stress.

- **D: Common grounds must be avoided**
  - This is incorrect because common grounding systems can be effective and are often used in installations. The important factor is to ensure that all equipment is properly bonded to the common ground to prevent potential differences that could lead to equipment damage or safety hazards.

### Useful Rules of Thumb:
- Always use smooth, gradual bends in grounding conductors.
- Ensure that grounding conductors are securely connected to all equipment and structures.
- Regularly inspect grounding systems to ensure they are intact and functioning properly.

By following these guidelines, you can help ensure that your lightning protection system is effective and safe.