Bulbs The Classic Incandescent light bulbs are the most common filament lamps. Their size ranges from the 15 watt A-15 to the 1500 watt PS-52. These lamps are designed for 120, 125, and 130volt circuits and all are equipped with screw bases.
The larger wattages are manufactured in either clear or inside frosted bulbs, while the 200watt and smaller bulbs are usually frosted.
High wattage lamps are used primarily in commercial and industrial applications. So-called Soft White lamps are popular in homes because they achieve maximum light diffusion from the filament without glare or harsh shadows.
These Lamps come with Extended Life light bulb models.
Extended Life Lamps provide longer life at the expense of efficiency. This means, they should be used where replacement costs are high and power costs are low.
|  A19 Bulb |  A15 Bulb |