Article 338 Service-Entrance Cable Types SE and USE

I. General

338.1	Scope
338.2	Definition

This cable is either Type SE or USE and is used primarily for services. Type SE has a flame-retardant and moisture-resistant cover. Type USE, which is the one used underground, has a moisture-resistant cover.

II. Installation

338.10	Uses Permitted

(A) Service-Entrance Conductors. When used as service- entrance conductors, you must follow 230.6, 230.7, and Parts II, III, and IV of Article 230. If protected as noted in Section 300.5(D), Type USE can come above ground outside in meter enclosures or terminations when used as a service lateral.

(B) Branch Circuits or Feeders.

(1) Grounded Conductor Insulated. Type SE can be used if all conductors are rubber-covered or thermoplastic type.

(2) Grounded Conductor Not Insulated. Generally, Type SE cable can be used where the insulated conductor is used for circuit wiring in a building and where the uninsulated conductor is used only for equipment grounding. There is an exception.

(3) Temperature Limitations. Do not exceed temperature specified.

(4) Installation Methods for Branch Circuits and Feeders.

Review applicable sections of the NEC®.