Humber/Ontario Real Estate Course 3 Exam Practice

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When discussing the location of the electrical main disconnect, which of the following is incorrect?

  1. It is housed within the distribution panel

  2. It can be located in a separate enclosure

  3. It is always installed outside the house

  4. It can be directly after the electrical meter

  5. It is between the panel and circuits

  6. It can be inside or separate from the panel

The correct answer is: It is always installed outside the house

The assertion that the electrical main disconnect is "always installed outside the house" is incorrect. While it is indeed a common practice in some areas to have the main disconnect located outside for easy access by utility personnel and for safety reasons, it is not a universal requirement. Main disconnects can also be installed indoors, depending on local building codes, the specific electrical setup of the property, and practical considerations regarding access and safety measures. It is important to understand the contexts in which the disconnect might be placed; for instance, in residential settings, it might be installed directly next to the electrical meter outside, while in other configurations, it could be found within the distribution panel itself or in a separate enclosure inside the house. This versatility accommodates different housing designs, geographic locations, and code requirements.