The California B2 Residential Remodeling Exam may include questions related to electrical work that cover a variety of topics. Here are some example questions that could be on the exam:

1. Basic Electrical Theory:

• Q: What is the function of a circuit breaker in an electrical system?
• A: A circuit breaker is a safety device designed to protect an electrical circuit from damage caused by overload or short circuit. It interrupts the flow of electricity if the current exceeds a safe level.

2. Wiring Methods and Materials:

• Q: What is the minimum gauge wire required for a 20-ampere circuit?
• A: The minimum gauge wire required for a 20-amp circuit is 12 AWG (American Wire Gauge).

3. Electrical Codes and Safety Standards:

• Q: According to the National Electrical Code (NEC), what is the required distance between electrical outlets in a residential living room?
• A: The NEC requires that outlets be placed so that no point along the floor line in any wall space is more than 6 feet from an outlet.

4. Lighting and Fixtures:

• Q: What is the maximum wattage for a lighting fixture installed in a closet?
• A: According to the NEC, the maximum wattage for an incandescent light fixture in a closet is 60 watts.

5. Electrical Troubleshooting:

• Q: If a GFCI outlet repeatedly trips, what could be the potential causes?
• A: Potential causes for a GFCI outlet tripping include a ground fault, an overloaded circuit, or a malfunctioning GFCI device.

6. Service Panels and Subpanels:

• Q: What is the minimum height requirement for mounting an electrical service panel?
• A: The NEC requires that the top of the service panel be no more than 6 feet 7 inches above the floor.

7. Load Calculations:

• Q: How do you calculate the electrical load for a new room addition to ensure the existing service panel can handle the additional demand?
• A: The electrical load is calculated by adding the wattage of all appliances, lighting, and outlets, then dividing by the voltage to find the amperage. This total is then compared to the capacity of the service panel.

8. Grounding and Bonding:

• Q: What is the purpose of grounding an electrical system in residential construction?
• A: Grounding provides a path for electrical current to return to the ground in case of a fault, helping to prevent electric shocks and reduce the risk of fire.

9. Conduit and Cable Installation:

• Q: What type of conduit is typically used for outdoor wiring to protect against moisture?
• A: PVC (Polyvinyl Chloride) conduit is commonly used for outdoor wiring due to its resistance to moisture.

10. Energy Efficiency and Electrical Upgrades:

• Q: What are the benefits of upgrading to LED lighting in a residential remodel?
• A: LED lighting is more energy-efficient, has a longer lifespan, and produces less heat compared to traditional incandescent or fluorescent bulbs.

These sample questions give an idea of the range of topics that could be covered in the electrical section of the California B2 Residential Remodeling Exam.