1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL LLC CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared by UL LLC. It is normative for the applicable ULProduct Certification Program(s); however, it is curre
2、ntly not part of the UL Standard(s) referencedbelow.Product Category (CCN): KSBZStandard Number: UL 1453Standard Title: Standard for Electric Booster and Commercial Storage Tank WaterHeatersEdition Date: March 29, 2016Edition Number: 6Section / Paragraph Reference: 60 64Subject: Outdoor Use Equipmen
3、tDECISION:Table 6.1Minimum thickness of sheet metal for enclosures carbon steel or stainless steelWithout supporting frameaWith supporting frame or equivalentreinforcingaMinimum thicknessMaximum widthbMaximum lengthcMaximum widthbMaximum length Uncoated Zinc coatedInches (cm) Inches (cm) Inches (cm)
4、 Inches (cm) Inch (mm) Inch (mm)4.0 (10.2) Not limited 6.25 (15.9) Not limited 0.020d(0.51d) 0.023d(0.58d)4.75 (12.1) 5.75 (14.6) 6.75 (17.1) 8.25 (21.0)6.0 (15.2) Not limited 9.5 (24.1) Not limited 0.026d(0.66d) 0.029d(0.74d)7.0 (17.8) 8.75 (22.2) 10.0 (25.4) 12.5 (31.8)8.0 (20.3) Not limited 12.0
5、(30.5) Not limited 0.032 (0.81) 0.034 (0.86)9.0 (22.9) 11.5 (29.2) 13.0 (33.0) 16.0 (40.6)12.5 (31.8) Not limited 19.5 (49.5) Not limited 0.042 (1.07) 0.045 (1.14)14.0 (35.6) 18.0 (45.7) 21.0 (53.3) 25.0 (63.5)18.0 (45.7) Not limited 27.0 (68.6) Not limited 0.053 (1.35) 0.056 (1.42)20.0 (50.8) 25.0
6、(63.5) 29.0 (73.7) 36.0 (91.4)22.0 (55.9) Not limited 33.0 (83.8) Not limited 0.060 (1.52) 0.063 (1.60)25.0 (63.5) 31.0 (78.7) 35.0 (88.9) 43.0 (109.2)25.0 (63.5) Not limited 39.0 (99.1) Not limited 0.067 (1.70) 0.070 (1.78)29.0 (73.7) 36.0 (91.4) 41.0 (104.1) 51.0 (129.5)33.0 (83.8) Not limited 51.
7、0 (129.5) Not limited 0.080 (2.03) 0.084 (2.13)35.0 (88.9) 47.0 (119.4) 54.0 (137.2) 66.0 (167.6)42.0 (106.7) Not limited 64.0 (162.6) Not limited 0.093 (2.36) 0.097 (2.46)47.0 (119.4) 59.0 (149.9) 68.0 (172.7) 84.0 (213.4)52.0 (132.1) Not limited 80.0 (203.2) Not limited 0.108 (2.74) 0.111 (2.82)60
8、.0 (152.4) 74.0 (188.0) 84.0 (213.4) 103.0 (261.6)63.0 (160.0) Not limited 97.0 (246.4) Not limited 0.123 (3.12) 0.126 (3.20)73.0 (185.4) 90.0 (228.6) 103.0 (261.6) 127.0 (322.6)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 6.1 Continu
9、edWithout supporting frameaWith supporting frame or equivalentreinforcingaMinimum thicknessMaximum widthbMaximum lengthcMaximum widthbMaximum length Uncoated Zinc coatedInches (cm) Inches (cm) Inches (cm) Inches (cm) Inch (mm) Inch (mm)aA supporting frame is a structure of angle or channel or a fold
10、ed rigid section of sheet metal that is rigidly attached to and hasessentially the same outside dimensions as the enclosure surface and that has sufficient torsional rigidity to resist the bendingmoments which may be applied via the enclosure surface when it is deflected. Construction that is consid
11、ered to have equivalentreinforcing may be accomplished by designs that will produce a structure that is as rigid as one built with a frame of angles orchannels. Construction considered to be without supporting frame includes:1) Single sheet with single formed flanges (formed edges);2) A single sheet
12、 that is corrugated or ribbed; and3) An enclosure surface loosely attached to a frame, for example, with spring clips.bThe width is the smaller dimension of a rectangular sheet metal piece which is part of an enclosure. Adjacent surfaces of anenclosure may have supports in common and be made of a si
13、ngle sheet.cFor panels not supported along one side, for example, side panels of boxes, the length of the unsupported side shall be limitedto the dimensions specified.dSheet steel for an enclosure intended for outdoor use shall comply with the requirements for outdoor use equipment.Table 6.2Minimum
14、thickness of sheet metal for enclosures aluminum, copper, or brassWithout supporting frameaWith supporting frame or equivalent reinforcingaMinimum thicknessMaximum widthbMaximum lengthcMaximum widthbMaximum lengthInches (cm) Inches (cm) Inches (cm) Inches (cm) Inch (mm)3.0 (7.6) Not limited 7.0 (17.
15、8) Not limited 0.023d(0.58d)3.5 (8.9) 4.0 (10.2) 8.5 (21.6) 9.5 (24.1)4.0 (10.2) Not limited 10.0 (25.4) Not limited 0.029 (0.74)5.0 (12.7) 6.0 (15.2) 10.5 (26.7) 13.5 (34.3)6.0 (15.2) Not limited 14.0 (35.6) Not limited 0.036 (0.91)6.5 (16.5) 8.0 (20.3) 15.0 (38.1) 18.0 (45.7)8.0 (20.3) Not limited
16、 19.0 (48.3) Not limited 0.045 (1.14)9.5 (24.1) 11.5 (29.2) 21.0 (53.3) 25.0 (63.5)12.0 (30.5) Not limited 28.0 (71.1) Not limited 0.058 (1.47)14.0 (35.6) 16.0 (40.6) 30.0 (76.2) 37.0 (94.0)18.0 (45.7) Not limited 42.0 (106.7) Not limited 0.075 (1.91)20.0 (50.8) 25.0 (63.5) 45.0 (114.3) 55.0 (139.7)
17、25.0 (63.5) Not limited 60.0 (152.4) Not limited 0.095 (2.41)29.0 (73.7) 36.0 (91.4) 64.0 (162.6) 78.0 (198.1)37.0 (94.0) Not limited 87.0 (221.0) Not limited 0.122 (3.10)42.0 (106.7) 53.0 (134.6) 93.0 (236.2) 114.0 (289.6)52.0 (132.1) Not limited 123.0 (312.4) Not limited 0.153 (3.89)60.0 (152.4) 7
18、4.0 (188.0) 130.0 (330.2 160.0 (406.4)STANDARD NUMBER: UL 1453 -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 6.2 ContinuedWithout supporting frameaWith supporting frame or equivalent reinforcingaMinimum thicknessMaximum widthbMaximu
19、m lengthcMaximum widthbMaximum lengthInches (cm) Inches (cm) Inches (cm) Inches (cm) Inch (mm)aA supporting frame is a structure of angle or channel or a folded rigid section of sheet metal which is rigidly attached to and hasessentially the same outside dimensions as the enclosure surface and which
20、 has sufficient torsional rigidity to resist the bendingmoments which may be applied via the enclosure surface when it is deflected. Construction that is considered to have equivalentreinforcing may be accomplished by designs that will produce a structure which is as rigid as one built with a frame
21、of angles orchannels. Construction considered to be without supporting frame includes:1) Single sheet with single formed flanges (formed edges);2) A single sheet which is corrugated or ribbed; and3) An enclosure surface loosely attached to a frame, for example, with spring clips.bThe width is the sm
22、aller dimension of a rectangular sheet metal piece which is part of an enclosure. Adjacent surfaces of anenclosure may have supports in common and be made of a single sheet.cFor panels not supported along one side, for example, side panels of boxes, the length of the unsupported side shall be limite
23、dto the dimensions specified.dSheet steel for an enclosure intended for outdoor use shall comply with the requirements for outdoor use equipmentNote: All of the following text is NEWOUTDOOR-USE EQUIPMENT60 General60.1 An outdoor-use device shall comply with applicable requirements of the preceding S
24、ections of thisStandard and shall, in addition, comply with the following requirements.61 Enclosures61.1 An enclosure or enclosures shall be so constructed as to reduce the likelihood of the wetting of liveparts as indicated below and protect the system against electric shock due to weather exposure
25、.61.2 To determine compliance with this requirement, a complete assembly, with supply conduitconnections and without pipe thread compounds, is to be subjected to the Rain Test; see 64.1.61.3 A water absorbing insulating material shall not become wetted by rain when installed as intended ifsuch wetti
26、ng will depreciate its durability or insulating value.61.4 Any panel or cover in the outer enclosure shall require the use of tools to open; unless it can bedetermined that removal or opening of the panel or cover will not result in a risk of electric shock due toweather exposure or an injury to per
27、sons due to moving parts. Hinges and other attachments shall beresistant to corrosion.61.5 Access doors or panels shall be constructed so that with the doors or panels in place, no water willaccumulate within the enclosure during the conduct of the Rain Test. See 64.2.61.6 Enclosures for electrical
28、components shall have provision for drainage if knockouts or unthreadedopenings in the enclosure are employed.STANDARD NUMBER: UL 1453 -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL61.7 Cabinets and enclosures shall have a thickness of no
29、t less than 0.032 inch (0.81 mm) (No. 20 MSG)if uncoated sheet steel, not less than 0.034 inch (0.86 mm) (No. 20 GSG) if zinc coated sheet steel andnot less than 0.029 inch (0.74 mm) (20 AWG) if copper, brass, or aluminum; except as stated in 61.8.61.8 Enclosures less than No. 20 MSG which correspon
30、d with Table 6.1 or 6.2 whichever applies, complywith the intent of this requirement if they are protected by an outer cabinet.61.9 Metal shall not be used in combinations such as to cause galvanic action which will adversely affectcabinets or enclosures.61.10 Sheet steel cabinets and electrical enc
31、losures exposed to the effects of weathering shall beprotected against corrosion by the following means or by other metallic or nonmetallic coatings which havebeen shown to give equivalent protection.61.11 If the enclosure is of No. 16 MSG or heavier and it is not the sole enclosure of current carry
32、ing parts,it is to be protected by a coating at least equal to one of the following:a) Hot dipped mill galvanized sheet steel conforming with the coating Designation G60 or A60in the Weight (Mass) of Coating Requirements table in the Standard Specification for SteelSheet, Zinc-Coated (Galvanized) or
33、 Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-DipProcess, ASTM A653, with not less than 40 percent of the zinc on any side, based on theminimum single spot test requirement in this ASTM Specification. The weight of zinc coatingmay be determined by any suitable method; however, in case of questio
34、n the weight of coatingshall be established in accordance with the Test Method of ASTM A90. An A60 (Alloyed)coating shall also comply with 61.14.b) A zinc coating, other than that provided on hot dipped mill galvanized sheet steel, uniformlyapplied to an average thickness of not less than 0.00041 in
35、ch (0.0104 mm) on each surfacewith a minimum thickness of 0.00034 inch (0.0086 mm) the thickness of the coating shall beestablished by the Chromic Acid Dropping Test. See Section 64 of UL 795. An annealedcoating shall also comply with 61.14.c) Two coats of an organic finish of the epoxy or alkyd-res
36、in type or other outdoor paint on bothsurfaces. The suitability of the paint may be determined by consideration of its composition orby corrosion tests if these are considered necessary.61.12 If the enclosure is the sole enclosure of current carrying parts or if it is lighter than No. 16 MSG, itis t
37、o be protected by a coating at least equal to one of the following:a) Hot dipped mill galvanized sheet steel conforming with the coating Designation G90 in of theWeight (Mass) of Coating Requirements table in the Standard Specification for Steel Sheet,Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coat
38、ed (Galvannealed) by the Hot-Dip Process,ASTM A653, with not less than 40 percent of the zinc on any side, based on the minimumsingle spot test requirements in this ASTM Specification. The weight of zinc coating may bedetermined by any suitable method; however, in case of question the weight of coat
39、ing shall beestablished in accordance with the Test Method of ASTM A90.b) A zinc coating, other than that provided on hot dipped mill galvanized sheet steel, uniformlyapplied to an average thickness of not less than 0.00061 inch (0.0155 mm) on each surfacewith a minimum thickness of 0.00054 inch (0.
40、0137 mm) the thickness of the coating shall beestablished by the Chromic Acid Dropping Test. See Section 64 of UL795. An annealed coatingshall also comply with 61.14.STANDARD NUMBER: UL 1453 -4-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULc
41、) A cadmium coating not less than 0.001 inch (0.025 mm ) thick on both surfaces. Thethickness of coating shall be established in accordance with the Chromic Acid Dropping Test.d) A zinc coating conforming with 61.11 (a) or (b) with one coat of outdoor paint as specified in61.11(c).e) A cadmium coati
42、ng not less than 0.00075 inch (0.019 mm) thick on both surfaces with onecoat of outdoor paint on both surfaces, or not less than 0.0005 inch (0.013 mm) thick on bothsurfaces with two coats of outdoor paint on both surfaces. The thickness of the cadmiumcoating shall be established in accordance with
43、the Chromic Acid Dropping Test and the paintshall be as specified in 61.11(c).61.13 With reference to 61.9, other finishes, including paints, special metallic finishes and combinationsof the two comply with this requirement when comparative tests with galvanized sheet steel, withoutannealing, wiping
44、 or other surface treatment, conforming with 61.11(a) or 61.12, as applicable, indicatethey provide equivalent protection. Among the factors which are taken into consideration when judging thesuitability of such coating systems are exposure to salt spray, moist carbon dioxide-sulphur, dioxide-airmix
45、tures, moist hydrogen sulphide-air mixtures, ultraviolet light and water.61.14 A hot dipped mill galvanized A60 (alloyed) coating or an annealed zinc coating which is bent orsimilarly formed after annealing shall be additionally painted in the bent or formed area if the bending orforming process dam
46、ages the zinc coating, except that such areas on the inside surface of a cabinet orenclosure which water does not enter during the Rain Test need not be painted.61.15 If flaking or cracking of the zinc coating at the outside radius of the bent or formed section is visibleat 25 power magnification, t
47、he zinc coating is considered to be damaged. Simple sheared or cut edgesand punched holes are not considered to be formed, but extruded and rolled edges and holes shallconform with 61.14.61.16 Nonferrous cabinets and enclosures may be employed without special corrosion protection. Thethickness of th
48、e material is to be judged on the basis of its strength and rigidity.61.17 Gaskets required to seal enclosures of electrical components shall comply with the requirements ofClause 64.2, Accelerated Aging Tests Gaskets.61.18 All required markings located on the exterior of the appliance shall comply
49、with Clause 63.3 and beof the type suitable for outdoor use.61.19 Appliances intended to be used and meets the applicable requirements for outdoor use shall includethe marking “OUTDOOR USE” or equivalent.62 Field Wiring Connections62.1 Openings provided for field wiring connections shall be suitable for connection of conduit. Theopenings shall be threaded; unless:a) They are located wholly below the lowest uninsulated live part within the enclosure; orb) The location prevents drainage into the enclosure.Threaded holes for conduit shall be reinforced to provide metal at least 1/4 inch
