Size. Generally, do not be afraid of a fixture being too large for a room; too small is the usual problem. The fixture should relate to the scale of the room and the size of the table or the island over which it is to hang. For chandeliers, the rule of thumb is for rooms about 12’ x 14’ we suggest approx. 26” in diameter. In rooms of 14’ x 16’ approx 30” in diameter.
An old formula adds the width and length of your dining room in feet. The chandelier should be approximately the same size in inches. A few inches larger is acceptable.
Height. The bottom of the chandelier should be about 24-30" above the table, depending on whether your preference is for low or tall arrangements. If walking beneath the fixture, figure a minimum of 78" ^’6”of clearance.
Light Levels. Lower wattages, such as 25 watts and less, are usually sufficient and less glaring in most chandeliers and foyer fixtures. Be sure and calculate the total wattage from the number of candle arms when purchasing a dimmer, which is also recommended to achieve the desired level of lighting and save energy.