Installation Manual

© 2002 Thomas & Betts Corporation. Specifications are subject to change without notice. www.tnb.com A23
T&B
®
Fittings
A
Rigid and Intermediate Metal Conduit Fittings
T&B Grounding Hub
ABC
DE
Cat. Trade Max. Panel Throat
No. Size Dia. Thickness Dia.
H050GR-TB d1k 1l g i x
H075GR-TB f1y 1x C i A
H100GR-TB 1 2 1m 1h b 1
H125GR-TB 1b 2c 1g 1h b 1j
H150GR-TB 1d 2f 1g 1h b 1w
H200GR-TB 23b 1n1q b1O
H250GR-TB 2d 3f 2l 1l b 2u
H300GR-TB 34c 2y1xb2O
H350GR-TB 3d 5 2z 1e b 3u
H400GR-TB 45d 2z1e b3g
H500GR-TB 56g 3o1nb4n
H600GR-TB 67L 3q2 j6
Material – Hub and Locknut: zinc or copper free aluminum
Insulating Throat: thermoplastic temp. rating – 105°C
Flammability Rating: – 94V-0
Sealing Ring Nitrile (BUNA “N”)
For Aluminum Hubs add suffix A (i.e. H050A). For Chrome Plated Hubs add suffix CP (i.e. H050CP). For 316 Stainless Steel Hubs add
suffix GRSST (i.e. H050GRSST). (d" through 2" only.) Meets NEMA sealing requirements for NEMA 3R, 4 & 13 enclosures.
U.L. Listed and CSA Certified. CSA Certified for hazardous locations Class II Groups E.F.G. Class III.
U.L. File No. E-23018 CSA File No. 4484
Chrome Plated Hubs (suffix-“CP”) are rated NEMA 4X.
T&B Grounding and Bonding Locknut
Cat. Trade
AB
Ground Max. Conductor
No. Size Dia. Height Screw Size
L050GR d 1d u #10-32 x b" #10
L075GR f 1L u #10-32 x b" #10
L100GR 1 2 u #10-32 x b" #10
L125GR 1b 2c v b-20 x b" #10
L150GR 1d 2f v b-20 x j" #8
L200GR 2 3b v b-20 x j" #8
L250GR 2d 3f L b-20 x j" #6
L300GR 3 4c z b-20 x j" #6
L350GR 3d 5 z b-20 x j" #6
L400GR 4 5d z b-20 x j" #4
L500GR 5 6e z c-16 x c" #2
L600GR 6 7L z c-16 x c" #1
Material – Locknut: zinc or copper free aluminum U.L. File No. E-3060
For Aluminum Locknuts add suffix A. (i.e. L050GRA) CSA File No. 4484
For Chrome Plated Locknuts add suffix CP. (i.e. L050CP). For 316 Stainless Steel Locknuts add suffix SST (d" through 2" only.)
Grounding Locknut for Hubs
B
A
Throat Dia.
B
E
C
A
®
®
T&B Hub Centerline Spacing Chart
Conduit
Trade Size
1
⁄
2"
3
⁄
4"1"1
1
⁄
4"1
1
⁄
2"2"2
1
⁄
2"3"3
1
⁄
2"4" 5"6"
1
⁄2" 1l
3
⁄4" 1H 1A
1" 1B 1V 2a
1
1
⁄4" 2o 2! 2j 2d
1
1
⁄2" 2r 2Q 2d 2L 2g
2" 2v 2F 2f 2n 3a 3c
2
1
⁄2" 2z 2K 3 3i 3c 3e 3g
3" 3o 3! 3j 3d 3L 3n 4i 4d
3
1
⁄2" 3X 3Q 3e 3m 4 4b 4d 4m 5a
4" 3x 3} 3g 4h 4b 4d 4f 5h 5c 5e
5" 4s 3ç 4l 4f 4n 5i 5k 5f 6h 6j 7
6" 4L 4J 4O 5q 5X 5x 5B 6q 6v 6z 7u 7m
Nearest Obstruction B V 1a 1j 1d 1f 2 2j 2e 2g 2l 3O
to Center of Hub
412031.A01 FIT 3/12 3/13/03 4:45 PM Page 23