Division 2.3 Calculation of the Lighting Efficiency (LEhood)

The Lighting Efficiency (LE_hood) of a domestic range hood means the ratio between the average illumination and the nominal electric power input of the lighting system. It shall be calculated in lux per Watt and rounded at the nearest integer, as:

Where:

• E_middle is the average illumination of the lighting system on the cooking surface measured under standard conditions, in lux and rounded to the nearest integer,

• W_L is the nominal electric power input of the lighting system of the domestic range hood on the cooking surface, in Watt and rounded to the first decimal place.