J J-2 Conduit Outlet Boxes and Bodies: Malleable Iron or Aluminum; Explosionproof, Dust-Ignitionproof ® UNILETS for use with Threaded Metal Conduit. Applications Meet a wide range of classified area • requirements. Corrosion-resistant–ideal indoors or • out. For pulling of wires. • Connect conduit lengths and change • direction of conduit. Provide access for maintenance. • Features: All Bodies and Boxes Malleable iron bodies have high • tensile strength and ductility. Provides great resistance to corrosion, impact, and shock. Accurately tapped, tapered hub • threads for tight, rigid joints and ground continuity. Furnished with covers. • General purpose wiring. • Features: GR and GRF ➊GR offers ten hub arrangements. ➋GRF has integral mounting flange. Function as sealing fittings when • used with sealing covers (see NEC for restrictions). Internally threaded body with • externally threaded cover. Covers have pry notches for bar or • wrench. Accommodate sealing, dome, hub • and union hub covers, and canopies. Standard O-rings provide raintight fit. • NEMA 3,4. Internal ground screw standard. • Smooth, rounded integral bushing in • each hub type box protects conductor insulation. Features: GRH ➌Designed for use in Class I, Groups A, B, C, and D; Class II, Groups E, F, and G; and Class III. Internally threaded body with • externally threaded covers. Standard O-rings provide raintight fit. • NEMA 3,4. Internal ground screw standard. • Smooth, rounded integral bushing in • each hub type box protects conductor 14 GU insulation. Features: ELBD ➍Exclusive built-in pulling rollers in 13 GRSS each end (2-1/2 thru 4” sizes) protect cable from damage and make cable pulling easier. Effective September, 2005 800-621-1506 Copyright 2005 www.appletonelec.com PAGE 2 J J-3 Conduit Outlet Boxes and Bodies: Malleable Iron or Aluminum; Explosionproof, Dust-Ignitionproof ® UNILETS for use with Threaded Metal Conduit. used with sealing covers (see NEC for Features: GRSS and GRSSA Excellent for use in wiring of motors, • restrictions). 13 panelboards, circuit breakers, entranc- Multiple hubs permit flexibility. • Internally threaded body with • es to buildings, etc. Copper-free aluminum body and externally threaded cover. • Body and cover have ground mating cover provide superior corrosion • Smooth, rounded integral bushing in • surfaces to meet classified-location resistance. each hub type box protects conductor requirements. Internal ground screw standard. • insulation. Smooth, rounded integral bushing in • Features: GU Features: GRJ each hub type box protects conductor 14 Designed for Class I, Groups B,C,D; insulation. • Small, round conduit outlet boxes. Class II, Groups E,F,G; and Class III. Features: ELBY Function as sealing fittings when • Externally threaded body with • used with sealing covers (see NEC for Serve as pulling fittings. • internally threaded cover. restrictions). Make 90° bends in conduit. • Smooth, rounded integral bushing in • Externally threaded body with inter- • Threaded cover opening permits each hub type box protects conductor • nally threaded cover. easy access for pulling conductors thru insulation. Smooth, rounded integral bushing in hubs. • Internal ground screw standard. • each hub type box protects conductor Easily removable threaded cover. • Standard Materials insulation. Features: CPU GR, GRF, GRH, and GRJS: • Features: ER Malleable iron bodies with aluminum Universal design with four threaded Compact, rectangular conduit outlet universal hubs and three close-up covers. boxes are ideal in classified locations plugs. Aluminum GR Series: Copper-free • where space is limited. Serve as mounting outlets for lighting body and cover. • Six different hub arrangements. • fixtures when used with hub cover. GU, GRUO, GRUJ, GRU (Union), • Ground surface contact between • Wide, accurately ground explosion- GRJ, CPU, ER, ELBD and ELBY: • body and cover assures a flame-tight proof mating surfaces. Malleable iron bodies and covers. joint. Smooth, rounded integral bushing in GRU, GRUE, and GRSS: Aluminum • • Smooth, rounded integral bushing in • each hub type box protects conductor copper-free bodies and covers. each hub type box protects conductor insulation. GRG O-Rings: Neoprene. • insulation. Features: GRU and GRUE Standard Finishes Features: GRUO and GRUJ Universal design with five threaded Malleable iron bodies and • Threaded universal hubs for wiring • universal hubs and three close-up covers (except ELBY) triple-coat—(1) flexibility. plugs. zinc electroplate, (2) dichromate, and GRUO has eight hubs. Copper-free aluminum body and (3) epoxy powder coat. • cover provide resistance to corrosive GRUJ offers up to eleven hubs. Aluminum bodies and covers: epoxy • atmospheres. powder coat. Ideally suited for use where space is • Function as sealing fittings when • limited, such as for gasoline pumps. ELBY malleable iron body and cover: • used with sealing covers (see NEC for zinc electroplate and clear chromate. Function as sealing fittings when • restrictions). used with sealing cover (see NEC for Compliances GRU has internally threaded body • restrictions). UL Standard 886. and externally threaded cover with O- • Externally threaded body with inter- • ring for raintight fit, NEMA 3,4. GRUE Federal Spec. W-C-586B. • nally threaded covers. has externally threaded body and Appleton malleable iron products • Smooth, rounded integral bushing in • internally threaded overlapping cover. conform to ASTM A47-77, Grade each hub type box protects conductor Covers have pry notches for bar or 32510, which has the following proper- • insulation. wrench. ties: tensile strength, 50,000 psi; yield, Features: GRU (Union Hubs) 32,000 psi; and elongation, 10%. Smooth, rounded integral bushing in • each hub type box protects conductor Union hubs permit easy wiring. Appleton aluminum products are • insulation. produced from a high strength copper- Function as sealing fittings when • free (4/10 of 1% max.) alloy. used with sealing covers (see NEC for Features: GRJS Suitable for Class I, Div. 1 & 2, if restrictions). • Universal design with five threaded installed in compliance with NEC 501- Externally threaded body with inter- openings and three close-up plugs. • 4(a)(b) and for Class II, Div. 1 & 2, if nally threaded cover. Compact round box for use where • in compliance with NEC 502-4(a)(b). Smooth, rounded integral bushing in space is limited. • GR Series: CSA -LR25875-30. • each hub type box protects conductor Serve as mounting means for lighting • insulation. fixtures when used with hub cover. Function as sealing fittings when • Effective September, 2005 800-621-1506 Copyright 2005 www.appletonelec.com PAGE 3 J J-4 Class I, Div. 1 and 2 GR Conduit Outlet Boxes: Groups B*,C,D Class II, Div. 1 and 2 Explosionproof, Dust-Ignitionproof Groups E,F,G ® UNILETS for use with Threaded Metal Conduit. Class III Furnished with Internal Ground Screw and O-Ring. NEMA 3,4 Conduit Cover Hub Size Opening Cubic Form Catalog Number* Type (Inches) (Inches) Inches No.† Malleable Iron• Aluminum• 1/2 3.38 18 1 GRE50 GRE50-A 3/4 3.38 18 1 GRE75 GRE75-A GRE 1 3.38 18 1 GRE100 GRE100-A 1-1/4 3.94 31 2 GRE125 GRE125-A 1-1/2 4.88 72 3 GRE150 GRE150-A 1/2 3.38 18 1 GRC50 GRC50-A 3/4 3.38 18 1 GRC75 GRC75-A GRC 1 3.38 18 1 GRC100 GRC100-A 1-1/4 3.94 31 2 GRC125 GRC125-A 1-1/2 4.88 72 3 GRC150 GRC150-A 2 4.88 76 3 GRC200 GRC200-A 1/2 3.38 18 1 GRL50 GRL50-A 3/4 3.38 18 1 GRL75 GRL75-A GRL 1 3.38 18 1 GRL100 GRL100-A 1-1/4 3.94 31 2 GRL125 GRL125-A 1-1/2 4.88 72 3 GRL150 GRL150-A 2 4.88 76 3 GRL200 GRL200-A 1/2 3.38 18 1 GRLB50 GRLB50-A 3/4 3.38 18 1 GRLB75 GRLB75-A GRLB 1 3.38 18 1 GRLB100 GRLB100-A 1-1/4 3.94 31 2 GRLB125 GRLB125-A 1-1/2 4.88 72 3 GRLB150 GRLB150-A 2 4.88 76 3 GRLB200 GRLB200-A 1/2 3.38 18 1 GRN50 GRN50-A 3/4 3.38 18 1 GRN75 GRN75-A GRN 1 3.38 18 1 GRN100 GRN100-A 1-1/4 3.94 31 2 GRN125 GRN125-A 1-1/2 4.88 72 3 GRN150 GRN150-A 1/2 3.38 18 1 GRT50 GRT50-A 3/4 3.38 18 1 GRT75 GRT75-A GRT 1 3.38 18 1 GRT100 GRT100-A 1-1/4 3.94 31 2 GRT125 GRT125-A 1-1/2 4.88 72 3 GRT150 GRT150-A 2 4.88 76 3 GRT200 GRT200-A 1/2 3.38 18 1 GRX50 GRX50-A 3/4 3.38 18 1 GRX75 GRX75-A GRX 1 3.38 18 1 GRX100 GRX100-A 1-1/4 3.94 31 2 GRX125 GRX125-A 1-1/2 4.88 72 3 GRX150 GRX150-A 2 4.88 76 3 GRX200 GRX200-A * In Class I, Div. 1, Group B atmospheres, all conduit runs must have a sealing fitting (not supplied) field installed adjacent to the enclosure. • Supplied with Aluminum covers. † Form number designates body and matching cover sizes. To order body without cover, add suffix -LC to catalog number. Other covers available—see GR Cover listing page and order separately. See J-8 for optional Terminal Blocks. Effective August, 2008 800-621-1506 Copyright 2008 www.appletonelec.com PAGE 4 J J-5 Class I, Div. 1 and 2 GR Conduit Outlet Boxes: Groups B*,C,D Class II, Div. 1 and 2 Explosionproof, Dust-Ignitionproof Groups E,F,G ® UNILETS for use with Threaded Metal Conduit. Class III Furnished with Internal Ground Screw and O-Ring. NEMA 3,4 Conduit Cover Hub Size Opening Form Catalog Number* Type (Inches) (Inches) No.† Malleable Iron Aluminum GRCA 1/2 3.38 1 GRCA50 GRCA50-A 3/4 3.38 1 GRCA75 GRCA75-A GRLA 1/2 3.38 1 GRLA50 GRLA50-A 3/4 3.38 1 GRLA75 GRLA75-A GRTA 1/2 3.38 1 GRTA50 GRTA50-A 3/4 3.38 1 GRTA75 GRTA75-A * In Class I, Div. 1, Group B atmospheres, all conduit runs must have a sealing fitting (not supplied) field installed adjacent to the enclosure. • Supplied with Aluminum covers. † Form number designates body and matching cover sizes. To order body without cover, add suffix -LC to catalog number. Other covers available—see GR Cover listing page and order separately. See J-8 for optional Terminal Blocks. GR Series, Form 1 Dimensions in Inches Hub Size (In.) A B C D E F G 1/2 3.75 2.44 2.88 .75 .81 2.25 1.25 3/4 3.75 2.44 2.88 .75 .81 2.25 1.25 1 3.75 2.44 2.88 .94 .94 2.25 1.06 Dimensions in Centimeters 1/2 9.5 6.2 7.3 1.9 2.1 5.7 3.2 3/4 9.5 6.2 7.3 1.9 2.1 5.7 3.2 1 9.5 6.2 7.3 2.4 2.4 5.7 2.7 GR Series, Forms 2 and 3 Dimensions in Inches Hub Size (In.) A B C D E F G 1-1/4 4.50 2.69 3.56 1.19 .88 2.75 1.13 1-1/2 5.75 3.75 4.81 1.38 .94 4.06 1.50 2 5.75 4.00 5.06 1.63 1.00 4.25 1.25 Dimensions in Centimeters 1-1/4 11.4 6.8 9.1 3.0 2.2 7.0 2.9 1-1/2 14.6 9.5 12.2 3.5 2.4 10.3 3.8 2 14.6 10.2 12.9 4.1 2.5 10.8 3.2 For cubic inches information, see page J-19 Effective August, 2008 800-621-1506 Copyright 2008 www.appletonelec.com PAGE 5 J J-6 Class I, Div. 1 and 2 GRF Flanged Conduit Outlet Boxes: Groups B*,C,D Class II, Div. 1 and 2 Explosionproof, Dust-Ignitionproof Groups E,F,G ® UNILETS for use with Threaded Metal Conduit. Class III Furnished with Internal Ground Screw and O-Ring. NEMA 3,4 Conduit Cover Hub Size Opening Form Catalog Number* Type (Inches) (Inches) No.† Malleable Iron Aluminum GRFC 1/2 3.38 1 GRFC50 GRFC50-A 3/4 3.38 1 GRFC75 GRFC75-A 1 3.38 1 GRFC100 GRFC100-A GRFL 1/2 3.38 1 GRFL50 GRFL50-A 3/4 3.38 1 GRFL75 GRFL75-A 1 3.38 1 GRFL100 GRFL100-A GRFT 1/2 3.38 1 GRFT50 GRFT50-A 3/4 3.38 1 GRFT75 GRFT75-A 1 3.38 1 GRFT100 GRFT100-A GRFX 1/2 3.38 1 GRFX50 GRFX50-A 3/4 3.38 1 GRFX75 GRFX75-A 1 3.38 1 GRFX100 GRFX100-A * In Class I, Div. 1, Group B atmospheres, all conduit runs must have a sealing fitting (not supplied) field installed adjacent to the enclosure. † Form number designates body and matching cover sizes. To order body without cover, add suffix -LC to catalog number. Other covers available—see GR Cover listing page and order separately. For cubic inches information, see page J-19 Effective August, 2008 800-621-1506 Copyright 2008 www.appletonelec.com PAGE 6 J J-7 Class I, Div. 1 and 2 GRH Conduit Outlet Boxes: Groups A,B,C,D Class II, Div. 1 and 2 Explosionproof, Dust-Ignitionproof Groups E,F,G ® UNILETS for use with Threaded Metal Conduit. Class III Furnished with Internal Ground Screw and O-Ring. NEMA 3,4 Hub Conduit Cover Catalog Number Type Size (Inches) Opening (Inches) Malleable Iron GRHC 1/2 3.38 GRHC50 3/4 3.38 GRHC75 1 3.38 GRHC100 GRHL 1/2 3.38 GRHL50 3/4 3.38 GRHL75 1 3.38 GRHL100 GRHLB 1/2 3.38 GRHLB50 3/4 3.38 GRHLB75 1 3.38 GRHLB100 GRHT 1/2 3.38 GRHT50 3/4 3.38 GRHT75 1 3.38 GRHT100 GRHX 1/2 3.38 GRHX50 3/4 3.38 GRHX75 1 3.38 GRHX100 GRH Series Dimensions in Inches Hub Size (In.) A B C D E F G 1/2 3.75 2.44 2.63 .75 .81 1.63 1.25 3/4 3.75 2.44 2.63 .75 .81 1.63 1.25 1 3.75 2.44 2.63 .94 .94 1.63 1.06 Dimensions in Centimeters 1/2 9.5 6.2 6.7 1.9 2.1 4.1 3.2 3/4 9.5 6.2 6.7 1.9 2.1 4.1 3.2 1 9.5 6.2 6.7 2.4 2.4 4.1 2.7 For cubic inches information, see page J-19 Effective September, 2005 800-621-1506 Copyright 2005 www.appletonelec.com PAGE 7 J J-8 Covers for GR and GRF Conduit Outlet Boxes Covers and O-rings Fit Bodies with Corresponding Form Numbers. Cover Fixture Hub Opening Stem Size Form Catalog Number Type (Inches) (Inches) No.† Malleable Iron Aluminum Surface 3.38 1 GRK-1M GRK-1 3.94 2 GRK-2M GRK-2 4.88 3 GRK-3M GRK-3 Sealing 3.38 1 GRK-1SC GRK-1SC-A 3.94 2 GRK-2SC GRK-2SC-A 4.88 3 GRK-3SC GRK-3SC-A Dome 3.38 1 GRK-1DC 2” deep Union Hub 3.38 3/4 1 GRK-75U GRK-75UA Hub 3.38 1/2 1 GRK-50 GRK50-A 3.38 3/4 1 GRK-75 GRK75-A Canopy 3.38 1/2 1 GRK-50C Length 3.38 3/4 1 GRK-75C 4-1/2” 3.38 1 1 GRK-100C O-Rings—Buna-N Catalog Number Provide Raintight fit when used on 1 GRG-1 following series: GR (Forms 1, 2 and 3), 2 GRG-2 GRF (Form 1), GRH, and GRU (Form 1). 3 GRG-3 GRTB Terminal Strip For use in standard GR series boxes Weidmuller type MK terminal Block* with wire range of #22-#12 AWG. Mounts on 2 predrilled and tapped standard holes (furnished in internal GR boxes). 6 position terminal block kit 1+2 GRTB6-12 6 position terminal block kit 3 GRTB6-3 12 position terminal block kit 3 GRTB12-3 *Terminal block is UL listed for 300 volts, 25 ampere. CSA certified for 300 volts, 13 ampere. †Form numbers designate cover and matching body sizes. Effective September, 2005 800-621-1506 Copyright 2005 www.appletonelec.com PAGE 8 J J J-19 Wiring Capacity: Explosionproof Conduit Outlet Boxes Volume in Cubic Inches and Cubic Centimeters Wiring Capacity Type Size Vol./cu. in. Vol./cu. cm CPU Form 20 21.0 344.1 ER 1/2” 4.8 78.7 ER 3/4” 7.3 119.3 GR Form 1 18.0 295.0 GR Form 2 31.0 508.0 GR Form 3 (1-1/2”) 72.0 1179.9 Form 3 (2”) 76.0 1245.4 GRF All 18.0 295.0 GRH All 13.8 226.2 GRJ All 7.3 119.3 GRJS All 12.5 204.8 GRK (Canopy)- -50C, -75C, -100C 16.0 262.2 GRK (Dome) 1DC 6.0 98.3 GRU (Union Hubs) 1/2”, 3/4” 19.0 311.4 GRU (Universal) 1/2”, 3/4” 13.5 221.2 1” 17.5 286.8 GRUE 1/2”, 3/4” 15.3 250.7 1” 18.5 303.2 GRUJ All 25.0 409.7 GRUO All 25.0 409.7 GRSS All 29.0 475.2 GRSSA All 29.0 475.2 GU All 19.0 311.4 ELBD 90° Pulling Unilets Size 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 Capacity in Cubic Inches ELBD 7.0 7.0 25.0 25.0 69.0 69.0 240.0 240.0 540.0 540.0 Capacity in Cubic Centimeters ELBD 114.7 114.7 409.7 409.7 1130.7 1130.7 3932.9 3932.9 8849.0 8849.0 ELBD GU GRSS Effective September, 2005 800-621-1506 Copyright 2005 www.appletonelec.com PAGE 19