Check out this manufacturer of EM Lighting Inverters. There is a tipping point on the number of EM ballasts where a lighting inverter becomes the least expensive solution to comply with code. From the website at Crucial Power:
Crucial Power offers the most diversified Central Lighting Inverter product line on the market today. Standard features include:
n Latest technology, Double Conversion “no-break” transfer of power
n Pulse Width Modulated (PWM) design for true Sine Wave output
n Compatible with fluorescent, incandescent and HID lamps
n Small footprint, modular design enclosures
n Sealed maintenance-free lead calcium batteries
n Advanced self-testing and monitoring systems
n Listed to UL 924, UL924A and UL 1778UPS by CSA
Crucial Power leads the industry with many exclusive products, including:
n EconoSine – the most compact (28” x 24” x 15”) self-contained 500VA to 3000VA Inverter available
n EconoSine Super Charged – new 2.1KW and 3KW model with multiple voltages and expanded capabilities
n Wave Riderรค family – full range of latest design Inverters in 3kVA to 62.5kVA sizes, wide array of options, single and three phase models
n HEU – the only outdoor and hostile environment Inverter on the market, built for remote, vandal-prone and harsh weather locations
n Monitoring – from basic local monitoring to advanced systems for remote monitoring and reporting via phone, fax, e-mail, pager or the internet worldwide
Crucial Power Inverters are in operation throughout the U.S. in a wide range of applications, including retail stores, schools & universities, office buildings, hospitals, restaurants, banks, movie theaters, hotels & motels, airports, railroads, subways & tunnels, prisons, military bases, shopping centers and manufacturing plants.













The John E Jaqua Academic Center is the newest addition to the University of Oregon campus. When designing the 40,000 square foot state-of-the-art academic learning center, the main objective was to provide a comfortable and focused learning environment for student athletes. In addition, the Center would also serve as a vehicle to celebrate alumni and student athletes and their accomplishments as well as to recruit new student athletes. Architectural firm ZGF Partnership and lighting designer Mark Godfrey of Lighting Studio at Interface Engineering Lighting worked together to create a tranquil environment for studying that connected students to the surrounding natural landscape elements and daylight as well as offered a vibrant and welcoming space.