9602 19TH AVE SE 2018-01-02 MF Import

GENERAL NOTES: 1 . For small residential and motel class public pools under 800 sq. ft. of pool surface area, one 500 watt underwater light located in the deep end is sufficient illumination. The basis rule in determining the amount of lighting required is 21 to I weft per sq. _ ft. of pool surface area. 2. For large public pools, most building codes require a minimum of � watt per sq. ft. of poll surface area. However, many of these larger pools installations have proven this to be too low. As a result, more architects are now specifying from 1 to 1� watts per sq. ft. providing a safer illumination with large bathing loads. 3. In diving pools and diving areas of large public pools, the wattage sizing per sq. ft. is increased for greater illumination due to the density of deeper water. In diving areas to 12 feet in depth, a sizing of 13 to 2 watts per sq. ft. is recommended and depths in excess of 12 feet to 20 feet, 2 to 3 watts per sq. ft. is recommended. 4. For competition pools, 2 to 3 watts per sq. ft. are ecommended and desired by many coaches, especially at the start/finish end of lanes. Never install lights in end walis at end of swimming lanes. However, if short course swimming is provided along width of .50 meter course, light fixtures may be installed between lanes (under racing lines) on a separate switch. 5. Install a GFI per Art. 680-20 of The National Electric Code. SPECIFICATIONS: The underwater light shall consist of a copper light housing assembly, heat resistant gluss lens, prncelain lamp base and light bulb. The light shall be designed to operate only when submerged. Light housing shall be formed copper with a bronze electrical cable sealing gland. The l lens (clear)/(blue)/(red) shall consist of heat resistant glass designed to focus the light beam in a 30o horizontal arc, with a 15' downward deflection. Lens shall be secured to the housing by means of a chrome plated, cast bronze face ring. Lens shall be notched to receive ten clamping bolts so as to provide uniForm holding pressure against the lens between the face ring and the light housing. A seal shall be effected by means of a molded one piece wrap around lens neoprene gasket. A porcelain, medium base socket shall be secured inside the light housing and shall be pro- vided with two power terminals and ground wire connection. After assembly, the lamp base and cord terminals shall be encapsulated to water proof all connections. A light niche shall be formed stainless steel with a k", 3/4" or 1" I.P.S. bronze or stainless steel conduit connection and shall be provided with a cast bronze mounting ring. The mounting ring shall have a locking lug to match the bottom of the light face ring and at the top surface shall be provided with a tapped boss to receive a vandal proof securing screw. An electrical 16-3 supply cable feet long of ST jacket type for underwater installation shall be provided with 3 t16 wires. 1" niche P/N 5068-17 shall be provided with a U.L. approved pressure connector welded to the inside of the niche for bonding when niche Is used with non-metallic conduit. Bulb shall be of the medium base, 500 watt, 120 volt flood I ight. Light shall meet all requirements of Article 680 of the National Electrical Code and shall be approved by Underwriters Laboratories, Inc. Underwater Light shall be: SWIMQUIP NO. Req'd. I_ Light Niche -No. 5068•-15 (k" Conn.) Regrd l Light Niche -No. 5068-12 (3/4" Conn Req'd. Light Niche No. 5068-'7 (1" Conn.) Req'd. Mounting Ring -No. 5057-12. —Rcq'd.