NEMA C78.21-2003
For Electric Lamps - PAR and R Shapes [Replaced: ANSI C78.21, ANSI C78.21, ANSI C78.21]

Standard No.

NEMA C78.21-2003

Release Date

2003

Published By

National Electrical Manufacturers Association（NEMA)

Status

Be replaced 2017-01

Replace By

NEMA C78.21-2011

Latest

NEMA C78.21-2011

NEMA C78.21-2003 history

• 2011 NEMA C78.21-2011 Incandescent Lamps - PAR and R Shapes
• 2003 NEMA C78.21-2003 For Electric Lamps - PAR and R Shapes [Replaced: ANSI C78.21, ANSI C78.21, ANSI C78.21]
• 1995 NEMA C78.21-1995 American National Standard for Incandescent Lamps - PAR and R Shapes (Includes: Supplement C78.21a-1996@ Supplement C78.21c-1998@ and Supplement C78.21b-1999)
• 1989 NEMA C78.21-1989 ELECTRIC LAMPS - INCANDESCENT LAMPS - PAR AND R SHAPES