What is a major characteristic of NON-Metallic sheathed cables?

Non-metallic sheathed cables, commonly known by the brand name Romex, are primarily designed for residential wiring applications. This type of cable is flexible, easy to work with, and provides suitable insulation and protection for low-voltage electrical systems typically found in homes. The construction of these cables, which features a non-metallic outer sheath made from plastic, is intended for dry, indoor environments, making them ideal for residential settings.

While it's true that non-metallic sheathed cables are not designed for high voltage applications or outdoor use without additional protection, their characteristics make them particularly well-suited for the wiring needs of standard household circuits such as lighting, outlets, and other general power needs.

Additionally, grounding requirements for non-metallic sheathed cables differ from metallic types; they do not require extensive grounding as they utilize the grounded conductor for safety and function. This simplicity and ease of installation further emphasize their suitability for residential wiring applications.