Article 338
SE Cable and its Uses
Definition
Service Entrance Cable is defined by the NEC as "A single conductor or multiconductor assembly provided with or without an overall covering, primarily used for services"
A neat chunk of SE Cable
Type SE
- Has a flame retardant, moisture resistant covering
- Includes SER and SEU
Type USE
- Has a moisture resistant covering
- Identified for underground use
- Isn't required to have fire retardant covering
- Includes URD
Installation Methods
When used for interior wiring SE cable must comply with the installation methods outlined in Article 334. For exterior installations it shall be installed in accordance with Article 225 and secured every 4.5ft (Art. 334.30). USE must be installed in accordance with Article 340 when used as an underground feeder.
SE Cable
- Where subject to physical damage
- Underground regardless of installation
- Exterior installations except when compliant with Article 225 and supported in accordance to 334.30
USE Cable
- Interior wiring
- Aboveground installations unless being terminated in an outdoor enclosure
- Aerial cable unless it is identified for above ground use and supported by a messenger wire
Uses Not Permitted
Bend Radius
Bends in SE and USE must be made in a way that does not damage the wire. The radius of the inner curve of the bend shall not be less than five times the diameter of the cable.
Text
The same information on the left but with less words