Se Cable Vs Nm

Se cable and NM (Non-Metallic) cable are commonly used in both commercial and residential electrical systems. Se cable, also known as service-entrance cable, is typically used to connect the main power service panel to an outdoor power source, such as a utility pole or other source of electricity. On the other hand, Non-Metallic (NM) cable, also known as Romex or Plastic Sheathed Cable, is commonly found in walls and ceilings for branch circuits within the walls.

Se cables are much more durable and robust than NM cables because they are made of a thicker gauge wire that is wrapped in a plastic or rubber outer jacket. This outer jacket not only helps protect the internal wire from water and moisture damage, but it also provides a layer of insulation that helps the cable meet NEC requirements. Se cables are an excellent choice for applications where long runs may be necessary or where the cable will be exposed to corrosive or wet environments.

NM cables, on the other hand, are most often used in residential settings for branch circuits. They consist of three insulated conductors – two hot wires and one neutral – and a bare ground wire which are encased in a nonmetallic plastic sheath. This sheath is designed to provide a good degree of protection against water and moisture, but it cannot withstand the same levels of abuse or exposure as se cable. In addition, NM cables must be run in closed conduits to meet UL and NEC requirements.

When it comes to choosing between Se cable vs NM, the decision will ultimately depend on the application. For outdoor applications, Se cable is likely the better choice due to its superior durability and protection against water and moisture. For indoor branch circuits, however, NM cable may be more appropriate due to its smaller size, lighter weight and lower cost. Ultimately, it is important to consider the environment, wiring regulations, and code compliance when making your decision.

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