MC cable, also known as metal-clad cable, is a type of electrical cable that is commonly used in residential, commercial, and industrial settings. It is designed to provide protection against physical damage and is often used in areas where other types of cables may not be suitable. However, there are certain situations where MC cable is not permitted to be installed.
One such situation is where the cable is subject to physical damage. This can include areas where the cable may be exposed to excessive moisture, extreme temperatures, or where it may come into contact with sharp objects or heavy machinery. In these cases, it is important to use a different type of cable that is specifically designed to withstand these conditions and provide the necessary protection.
Another consideration when installing MC cable is the need for proper support and securing. According to industry standards, MC cable must be supported and secured at intervals not exceeding six feet. This helps to prevent the cable from sagging or becoming loose, which could increase the risk of physical damage or electrical hazards. It is important to follow these guidelines to ensure the safe and proper installation of MC cable.
In my personal experience as an electrician, I have encountered situations where MC cable was not suitable for certain areas. For example, when working on a construction site where heavy machinery was being used, we had to use a different type of cable that was specifically designed to withstand the vibrations and potential impact from the equipment. This ensured that the electrical system remained safe and reliable, even in demanding conditions.
To summarize, MC cable is not permitted to be installed in areas where it is subject to physical damage. This includes situations where the cable may be exposed to moisture, extreme temperatures, or where it may come into contact with sharp objects or heavy machinery. Additionally, it is important to properly support and secure MC cable at intervals not exceeding six feet to prevent sagging or looseness. By following these guidelines and using the appropriate type of cable, the electrical system can be installed safely and effectively.