NEMA LS 20021-2023

Incompatibility of T8 Ballasts (RS, PS, Dimming) and “Shunted” Bi-Pin Lampholders (Previously LSD 29-2019)

National Electrical Manufacturers Association , 2024

$25.00 $49.00

Provides information on incorrect applications of bi-pin lampholders (tombstones) used with rapid-start (RS), programmed start (PS) and dimming ballasts. These incorrect applications have occurred in both new luminaires and field lamp and ballast retrofits.