A grounding type plug has two blades and a third grounding prong.
A polarized plug has two blades with one wider than the other. Install in accordance with the manufacturer’s instructions.Ĩ) Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.ĩ) Do not defeat the safety purpose of the polarized or grounding-type plug.