Emergency

What is the difference between a maintained, a non-maintained and a sustained emergency luminare?
A maintained luminaire is able to have it’s lamp(s) switched and driven by a healthy mains supply in non-emergency mode. In emergency mode, at least one of those lamps will be driven by the battery inverter.

A non-maintained luminaire will only work in emergency mode. The lamp(s) will only be driven by the battery invertor in the event of a mains failure.

A sustained luminaire will have a lamp(s) that will run with a healthy mains supply, but has a separate lamp(s) that will only be driven in emergency mode by the battery inverter. The separate emergency lamp(s) will not be driven in the mains healthy mode.

Are amalgam filled compact fluorescent lamps (CFLs) suitable for use with IBL CFL emergency gear?
No, amalgam filled CFLs are not suitable for use with IBL CFL emergency gear. IBL recommend the use of non-amalgam compact fluorescent lamps.