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levels to be used in operation are as shown on Detail <br /> Drawings S- 14 and S- 15 of the IRCDUS Standards . <br /> B. Operation Requirements <br /> 1 . The control panels shall consist of a main circuit breaker <br /> and generator breaker with mechanical interlock, an <br /> emergency power receptacle , a motor circuit protector <br /> (MCP) and magnetic starter for each pump motor, and 20 <br /> ampere , 120 volt circuit breakers as required . MCP motor <br /> control panel shall meet all requirements of service <br /> entrance by properly bonding neutral or shall be UL service <br /> entrance rated . A low and high level alarm and pump r <br /> shutoff shall be accomplished by float type , liquid level <br /> control system , with all components mounted in one <br /> common enclosure. Control switches shall provide means <br /> to operate each pump manually or automatically. When <br /> operated in the automatic mode , the control assembly shall <br /> provide means to manually select or automatically <br /> alternate the position of the "lead " and " lag" pumps after <br /> each pumping cycle. A three position alternate switch <br /> labeled "test-off-auto" shall be provided to manually select <br /> which pump shall be the lead pump, when necessary, and <br /> also be able to test the alternator to see if it is still <br /> operational . <br /> r <br /> 2. A float type liquid level control system shall continuously <br /> monitor wet well liquid level and control operation of the <br /> low-level cutoff for the pumps , and shall operate on a 24- r <br /> volt circuit. <br /> 3 . An unfused safety switch shall be installed between the <br /> meter and panel . This switch shall be in a NEMA 3X, UL <br /> rated , stainless steel waterproof enclosure , per Approved <br /> Manufacturer's Product List. Amperage shall be at least <br /> equal to that of the main breaker. <br /> C . Construction <br /> r <br /> 1 . The electrical control equipment shall be mounted <br /> within a modified NEMA 3X, UL rated , stainless steel , <br /> dead front enclosure . The enclosure shall be <br /> equipped with a door and may incorporate a <br /> removable back panel on which control components <br /> shall be mounted . Back panel shall be secured to <br /> enclosure with collar studs . All lines entering the <br /> enclosure shall be protected by diaphragm type seals <br /> at the source and shall be behind the dead front r <br /> enclosure , entering from the side or bottom only . The <br /> w <br /> 8 - 7 <br />