UL 778:2011 free download Motor-Operated Water Pumps
1 Scope
1.1 These requirements cover submersible and nonsubmersible motor-operated pumps intended to beused in ordinary locations in accordance with the National Electrical Code, NFPA 70.
1.2 These requirements do not cover pumps rated more than 600 volts, pumps using universal motorsrated more than 250 volts, pumps for fire protection service, pumps for use as or with swimming or wadingpool equipment，therapeutic baths, and similar equipment,nor pumps covered by other individualrequirements.These requirements do not cover pressure controls or pressure tanks that are intended foruse in water or other liquid systems.
1.3 A pump not covered by any of the definitions in Definitions, Section 3, and a pump intended for usewith liquids other than water, shall be evaluated on the basis of its compliance with the requirements inthis standard, and further examination and tests required to determine whether it is acceptable for thepurpose.
2 General
2.1 Components
Section 2.1 revised and relocated as Section 5A.1 January 14,2011
2.1.1 Revised and relocated as 5A.1.1 January 14,2011.
2.1.2 Revised and relocated as 5A.1.2 January 14,2011.
2.1.3 Relocated as 5A.1.3 January 14,2011.
2.1.4 Relocated as 5A.1.4 January 14,2011.
2.2 Units of measurement
2.2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.
2.2.2 Unless otherwise indicated， all voltage and current values mentioned in this standard areroot-mean-square (rms).
2.3 Undated references
2.3.1 Any undated reference to a code or standard appearing in the requirements of this standard shallbe interpreted as referring to the latest edition of that code or standard.
3 Definitions
3.1 For the purpose of these requirements, the following definitions apply.
3.2 CONDENSATE PUMP – A pump intended for use with equipment to facilitate the removal of watercondensate.
3.3 CORD-CONNECTED PUMP – A pump intended to be connected to a branch circuit supply bymeans of flexible cord and an attachment plug.
3.4 DEEP-WELL PUMP – A permanently installed, submersible or nonsubmersible pump intended tobe used for pumping water from a well for irrigation and other agricultural purposes; for domestic,municipal, and industrial water supplies; and the like.
3.5 EFFLUENT PUMP- A pump intended to pump liquid forms of waste mixed with water.3.6 ENCLOSURE -That part of the product that:
a) Renders inaccessible all or any parts of the equipment that may otherwise present a risk ofelectric shock and/or
b) Retards propagation of flame initiated by electrical disturbances occurring within.
3.7 FIELD-WIRINGTERMINAL – A terminal to which power supply (including equipment grounding) orcontrol connection will be made in the field when the product is installed as intended. lf the wire to beconnected to the terminal is provided as part of the unit,and a pressure terminal, connector, solderinglug, soldered loop, crimped eyelet, or other means for making the connection is factory-assembled tothe wire, it is not a field-wiring terminal.
3.8 FOUNTAIN PUMP – A pump intended for use with a fountain.
3.8.1 INDUSTRIAL USE – Pumps intended for industrial use are those with constructions meeting thefollowing parameters:
a) Are intended to be field installed in accordance with Article 430 of ANSI/NFPA 70,NationalElectrical Code (NEC);
b) Are intended for three-phase supply sources; and
c) Where the motor overtemperature protection required by Part Ill of Article 430 of the NEC isintended to be provided by a separate overload device or control.
UL 778:2011 free download
