February 2007 North American blizzard Due to the three-dimensional nature of the atmosphere, warm air was poised to overtake the cold air closer to the ground, causing precipitation to melt, then refreeze as either sleet or freezing rain. As temperatures hovered around freezing on the southern edge of the storm track, light snow accompanied freezing rain and sleet. The freezing rain coated all surfaces with thick layers of ice, including power lines and tree limbs which break under the additional weight. Some locations in the Mid-Atlantic received several inches of sleet. Four inches (100 mm) of sleet caused travel difficulties and hampered cleanup efforts in
Explosion-proof enclosure ingress of sleet, snow, dust, dirt, and rain. In addition to the features and benefits that accompany Type 1 and Type 2, this make offers a much higher resistance to rain, sleet, snow, dust, and extreme weather conditions. Offers protection against hazardous parts and guards the equipment from getting damaged by solid foreign objects. Type 3S enclosures can be used both indoors and outdoors to keep electrical equipment from deteriorating due to the ingress of rain, snow and sleet and functional flaws even when it is fully covered with ice. Over and above the protection offered by Type 3R, these