Discharge lamps

Discharge lamps light shops, halls, façades and sports grounds. They never strike on their own: they need a ballast and, for most types, an ignitor. Swapping a lamp for a different technology without checking the control gear is the leading cause of failure.

The ranges answer one another across brands — PHILIPS CDM-T, OSRAM HCI-T, SYLVANIA CMI-T and GE CMH-T all name the same ceramic metal halide lamp. Wattage, cap and colour must match.