UL50E hosedown test

35.2 Hosedown test (Type 4, 4X, 6 or 6P)

35.2.1 The enclosure and its external mechanisms are then to be sprayed by water from a hose having

a 1-inch (25.4-mm) inside diameter nozzle that delivers at least 65 gallons (246 L) of water per minute.

The water stream is to be directed at the joints of the enclosure from a distance of 10 – 12 feet (3.0 – 3.7

m) and is to be moved along the joints or surface at a minimum rate of 4 seconds per linear inch (1.6

s/cm). See also 35.2.2.

35.2.2 For an enclosure having a test length - height plus width plus depth dimension - of 75 inches (1.91

m) or less, the duration of the water stream contact with the enclosure is to be 5 minutes. For an enclosure

having a test length exceeding 75 inches (1.91 m), the duration of water stream contact in minutes is to

be the test length measured in inches divided by 15 (2.62 times the test length measured in meters).