UL50E-2020 pdf free download

UL50E-2020 pdf free download.Enclosures for Electrical Equipment Environmental Considerations.
harmful effects on the equipment due to the ingress of water (rain, sleet, and snow); and that will be undamaged by the external formation of ice on the enclosure.
TYPE 3S — Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts: to provide a degree of protection against ingress of solid foreign objects (falling dirt and windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, and snow): and for which the external mechanism(s) remain operable when ice laden.
TYPE 3X — Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts: to provide a degree of protection against ingress of solid foreign objects (falling dirt and windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, and snow); that provides an increased level of protection against corrosion; and that will be undamaged by the external formation of ice on the enclosure.
TYPE 3RX — Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts: to provide a degree of protection against ingress of solid foreign objects (falling dirt); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, and snow); that provides an increased level of protection against corrosion; and that will be undamaged by the external formation of ice on the enclosure.
TYPE 3SX — Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts: to provide a degree of protection against ingress of solid foreign objects (falling dirt and windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, and snow): that provides an increased level of protection against corrosion; and for which the external mechanism(s) remain operable when ice laden.
TYPE 4— Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts ; to provide a degree of protection against ingress of solid foreign objects (falling dirt and windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow, splashing water, and hose-directed water); and that will be undamaged by the external formation of ice on the enclosure,
TYPE 4X — Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts: to provide a degree of protection against ingress of solid foreign objects (falling dirt and windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow, splashing water, and hose-directed water): that provides an increased level of protection against corrosion; and that will be undamaged by the external formation of ice on the enclosure.UL50E-2020 pdf free download.