1 that the mains plug for patient care equipment comply with the requirements for a hospital grade attachment plug (mains plug) per UL's standard for attachment plugs and receptacles, UL 498.
UL 498 is not intended for molded-on attachment plugs (ref.
4) Inspect attachment plug
for loose, broken, and missing parts.
The forces with which the spring contacts of a receptacle grip the blades of the attachment plug
ensure reliable low-resistance electrical connections.
To insert an attachment plug, its prongs must be placed into the slots of the protective cap, then turned 90[degrees] or until the slots of the outlet are exposed.
Attachment plugs fit on the ends of cords of portable appliances and permit them to be connected to wall receptacles or extension cords.
Taps are used to increase the number of attachment plugs that can be used on a single receptacle face.
Caution must be exercised when tapping additional attachment plugs into the same line.
Heavy-duty attachment plugs for ranges and dryers are much larger than standard attachment plugs.
The different amperage attachment plugs are not interchangeable because of a difference in their configuration.