Foreword: This Design Guide provides a consistent guideline for creating a symbology for luminaires represented on drawings. It is intended for use by lighting design professionals, code authorities, contractors, and manufacturers to express generalized luminaire types on printed and electronic design drawings. It replaces the previous edition, DG-3-94. However, this Guide is not intended to supersede the definitions and descriptions of the luminaire schedule or written specifications.

The changes in this latest version include clarification on the use of fill in emergency luminaire symbols; the need for a complete project symbol list on every project; clarification of the meaning of a Horizontal Zero Line, a Directional Arrowhead, and a Directional Aiming Line; insertion point recommendations; symbol list clarifications; and editorial revisions including Annex A.