Kenroy Home 32846BRZ is a portable lamp that can be assembled in approximately 5 minutes. The lamp has a polarized plug to reduce the risk of electric shock and should not be used with an extension cord unless the plug can be fully inserted. The lamp takes a 150 watt maximum medium base type "A" bulb (not included). To replace the bulb, unplug the lamp, unscrew the existing bulb from the socket, and replace it with a new bulb. If the lamp does not light, check the plug at the outlet, the bulb for a broken filament, or contact your distributor or place of purchase.