This guide will help determine the correct lamp wattage and fixture capacity to meet NFPA 101 requirements for a particular installation. The data presented in the bottom panel is a model of the POINT BY POINT illumination in foot candles actually reaching the floor and is a much more accurate representation of fixture performance than a lamp isofootcandle distribution curve.

Start by selecting the desired Path of Egress width and length of fixture coverage from the buttons on the left. Select a mounting height and mounting configuration, ceiling or wall. Further refine your mounting choice from the buttons in the top panel. A range of fixture options will be presented to meet these conditions. Select a model from the RED button and a chart of the fixture light output will appear in the bottom panel. A PDF version of this data may be downloaded.

This data is valid only for the unique combination of lamp placement, door angles, direct and reflected illumination found in the Evenlite Mirrorlite Emergency Lighting System and will NOT BE VALID for any other manufacturer's emergency lighting unit. The data is obtained by actual fixture measurements and mathematical models. Field measurements reading lower may be due to the errors present in cosine corrected light meters when measuring shallow angles. To verify a measurement's accuracy, take the reading with the face of the meter probe perpendicular to the light beam axis and multiply by the sine of the beam angle to the floor.