GE 26430 LUCALOX 250W HPS Mogul Base Light Bulb

The GE 26430 LUCALOX is a 250-watt high-pressure sodium lamp producing 28,000 initial lumens at a correlated color temperature of 2,100K. That translates to a luminous efficacy of 112 lumens per watt — among the highest of any HID lamp technology. The light it produces is the familiar amber-gold wash seen in street lighting, parking structures, and industrial yards. With a CRI of just 22, this is not a lamp for any environment where seeing color accurately matters. What it does provide is raw photometric output and longevity: the 24,000-hour rated life means years of service in fixtures that run on dusk-to-dawn photocell schedules. The clear ED18 envelope sits on an E39 mogul base, compatible with standard commercial HPS luminaires.

This lamp requires an ANSI S50-rated 250W HPS ballast — magnetic reactor or electronic — and cannot be operated on ballasts designed for metal halide or mercury vapor lamps. Warm-up to full output takes approximately 3-5 minutes, and restrike after a power interruption requires roughly a minute for the arc tube to cool before reignition. These characteristics are standard across HPS technology and should be factored into any application where instant-on lighting is needed. The LUCALOX line has been a staple in commercial and municipal lighting for decades, and this 250W variant is sized for medium-scale area lighting — parking lots, loading docks, roadway fixtures, and security perimeter lighting where sheer output and operating cost matter most.