A-A-5059
i. Welds. The portable fan’s structure shall have seems and joints that are welded in accordance with chapter II or the AWS handbook. Welds shall be visually inspected.
3. Electrical
a. Motor. The motor shall have a nominal operating voltage of 115voltswith a frequency of 60 hertz and be single phase. A thermal-overload protector, in accordance with UL507, shall be installed in the motor casing. The motor shall start and operate at all motor terminal voltages between 75and 126 and not cause the thermal overload protector to open.
b. Explosion proof. The motor and its associated starting switch shall be mounted in a single explosion proof enclosure and be certified safe to use in class I, group D atmospheres.
c. Current. The maximum inrush current shall be 25 amps and shall have a duration of not longer than 3 seconds. The maximum running current shall be 7 amps.
d. Circuit Resistance to Ground. The circuit resistance between the ground prong and a dummy three prong receptacle ground and each exposed metal part of the fan shall be less than one ohm. The circuit resistance between the attachment electrical plug line prong and each exposed metal part of the fan shall be one megohm or greater.
e. Electric cord and Plug. The electric cord and plug shall be in accordance with J-C-175, specifically J-C-175STIC2BNY, and shall be not less than 50 feet long. All of the conductors shall be 14 AWG, style 1. The plug connector configuration shall be in accordance with J-C-175, table 1, part number WC596/13-3. The plug connector shall be internally molded to the cable jacket. The electric cord shall be attached to the switch within the casing
f. Electrical cord restraint. There shall be a restraint on the electric cord to prevent it from being pulled out of the casing.
g. Electric Cord Grommets. Where the electric cord penetrates the fan housing, a locking type plastic strain relief shall be used to prevent damage to the cord from rubbing against the housing.
4. Accessories
a. Adjustable door bar. The fan shall have an adjustable door bar. The length of the door bar shall range from 26 to 39 inches and shall not weigh more than 15 pounds.
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