Humber/Ontario Real Estate Course 4 Exam Practice

What is the location of the electrical main disconnect in a residential property?

1. Can be an integral part of the distribution panel or contained within a separate box.

2. Is located between the distribution panel and the circuits.

3. Is situated in a separate electrical room of the house.

4. Must be located on the distribution panel.

5. Must be located on the exterior of the house.

6. Requires a dedicated switchboard for operation.

The correct answer is: Can be an integral part of the distribution panel or contained within a separate box.

The statement that the electrical main disconnect can be an integral part of the distribution panel or contained within a separate box is accurate because it reflects the flexibility in electrical system design that allows for various configurations. The main disconnect functions as a key safety feature, enabling a homeowner or electrician to shut off power to the entire property, which is critical during repairs or emergencies. Often, the main disconnect is included within the distribution panel itself for convenience and space-saving, but it can also be housed separately, particularly in larger installations or where local codes dictate such a setup. This dual capability provides versatility in residential electrical layouts, ensuring that the disconnect is both accessible and compliant with safety standards. The other options suggest specific locations or functions that are not universally applicable. For instance, having the disconnect solely between the panel and circuits can limit accessibility, while stipulating it must be in a separate room or solely on the exterior does not consider the variety of home designs and local regulations that could allow for different placements. Additionally, requiring a dedicated switchboard is unnecessary, as the main disconnect can function effectively within the distribution panel.