Operating Guide

United States
Tel: [phone]
800.816.7809
Fax: [phone]
Technical Services
Tel: [phone]
www.tnb.comwww.tnb.com
United States
Tel: [phone]
800.816.7809
Fax: [phone]
Technical Services
Tel: [phone]
32
Connectors & Grounding — Blackburn
®
Grounding Systems
Ground Clamps
CAT. NO. GROUND WIRE SIZE WATER PIPE SIZE
2-TB #6, #4, #2
1
⁄2",
3
⁄4", 1" or rebar 4-10
3-TB #6, #4, #2 1
1
⁄4", 1
1
⁄2" or 2"
4 #6, #4, #2 2
1
⁄2", 3" or 3
1
⁄2"
5-TB #6, #4, #2 4", 4
1
⁄2" or 5"
6 #6, #4, #2 6"
Malleable iron. #6 – #2 AWG ground wire.
Water Pipe Ground Clamps
Water Pipe Ground Clamps
CAT. NO.
GROUND
WIRE SIZE
WATER
PIPE SIZE
CAT. NO.
GROUND
WIRE SIZE
WATER
PIPE SIZE
3902 #4–4/0 AWG
1
⁄2"–1" 3902BU* #4–4/0 AWG
1
⁄2"–1"
3903 #4–4/0 AWG 1
1
⁄4"–2" 3903BU* #4–4/0 AWG 1
1
⁄4"–2"
3904 #4–4/0 AWG 2
1
⁄2"–3
1
⁄2" 3904BU* #4–4/0 AWG 2
1
⁄2"–3
1
⁄2"
3905-TB #4–4/0 AWG 4"–5" 3905BU* #4–4/0 AWG 4"–5"
3906-TB #4–4/0 AWG 6" 3906BU* #4–4/0 AWG 6"
3907 #4–4/0 AWG 8" 3907BU* #4–4/0 AWG 8"
3908 #4–4/0 AWG 10" 3908BU* #4–4/0 AWG 10"
3909-TB #4–4/0 AWG 12" 3909BU* #4–4/0 AWG 12"
* UL Listed for direct burial
CAT. NO. WATER PIPE SIZE
CONDUCTOR RANGE DIMENSIONS (IN.)
STEEL CLAMP SCREW ALUMINUM WIRE SCREWMAX. MIN. A B C
AJ
1
⁄2–1 1/0 Str. #14 Sol. 2
1
⁄2 2
1
⁄4
5
⁄8
1
⁄4–20
7
⁄16–20 slot
AJ-2 1
1
⁄2–2 250 kcmil #6 3
7
⁄8 3
3
⁄4
7
⁄8
5
⁄16–18
11
⁄16–20 socket
AJ-2124 2
1
⁄2–4 250 kcmil #6 5
9
⁄16 6
5
⁄16
7
⁄8
3
⁄8–16
11
⁄16–20 socket
UL Listed for both copper and aluminum conductors to steel pipe and copper water tubing
Type AJ
Type AJ2
B
B
A
A
C
C
For connecting grounding
conductor to either steel
or copper pipe, rod or tubing.
Aluminum Water Pipe Clamp
• For use with copper
or aluminum conductor
• Tin plated for corrosion resistance
1211_1836_TNB_TNB_Power Connection & Control Cat31_r7.indd 32 2/24/14 3:27 PM