230.43 Wiring Methods for 1000 Volts, Nominal, or Less.

(A) Acceptable Wiring Methods. Service-entrance conductors shall be installed in accordance with the applicable requirements of this Code covering the type of wiring method used and shall be limited to the following methods:

(1) [ ← ] Reserved

← (2) [ ] Reserved

(3) Rigid metal conduit (RMC)

(4) Intermediate metal conduit (IMC)

(5) [ ← ] Reserved

← (6) [ ] Reserved

← (7) [ ] Reserved

(8) [ ← ] Reserved

(9) Busways

(10) Auxiliary gutters

(11) Rigid polyvinyl chloride conduit (PVC)

← (12) [ ] Reserved

(13) [ ← ] Reserved

(14) Mineral-insulated, metal sheathed cable, Type MI

← (15) [ ] Reserved

← (16) [ ] Reserved

(17) High density polyethylene conduit (HDPE)

(18) Non-metallic underground conduit with conductors (NUCC)

(19) Reinforced thermosetting resin conduit (RTRC)

(B) Raceway Size. Minimum raceway size shall comply with the following:

(1) Except as provided in Section 230.43(B)(2) and (3) the minimum size raceway installed for service entrance conductor shall be 1-1/4 inch (31.8 mm).

(2) Raceways for service entrance conductors for sign or billboard lighting shall not be smaller than 3/4 inch (19.1 mm) conduit.

(3) Installations consisting of not more than two 2-wire branch circuits may be supplied by No. 8 conductors in 3/4 inch (19.1 mm) conduit.

Exception: New service entrance conductors may be re-pulled in previously approved service raceways, provided the installation complies with the requirements of SFEC Section 89.116 and Chapters 1, 2 and 3.

Informational Note: Refer to electric utility service requirements for raceway sizes.