Operating Guide
United States
Tel:  901.252.8000
  800.816.7809
Fax: 901.252.1354
Technical Services
Tel:  888.862.3289
www.tnb.com
www.tnb.com
United States
Tel:  901.252.8000
  800.816.7809
Fax: 901.252.1354
Technical Services
Tel:  888.862.3289
27
Connectors & Grounding — Blackburn
®
 Grounding Systems
Ground Rod Clamps
Drive-on design provides easy, tool-free 
installation, high-reliability compression-
fit connection and room for one or two 
ground leads.
Type DGC — Drive-On Ground Clamps
•  High-strength copper alloy provides increased tensile strength 
and long-term corrosion resistance for direct-burial applications
•  UL
®
 486A and UL
®
 467 Listed
•  RUS Listed
CAT. NO.
GROUND ROD SIZE GROUND WIRE SIZE
DGC58-44
‡
5
⁄8 (.555–.565) (1) or (2) #4 Sol.
DGC58-66
‡
5
⁄8 (.555–.565) (1) or (2) #6 Sol.
DGC58-46*
5
⁄8 (.555–.565) (1) #4 Sol., (1) #6 Sol.
‡ 
RUS Listed
* Not UL
®
 Listed
Cable Tray Grounding Connector
•  Malleable iron construction
•  For use on cable tray 
up to 
5
⁄32" thick
CAT. NO.
GROUND WIRE RANGE 
(AWG) CARRIAGE BOLT SIZE 
10102-TB #8 Solid to #2 Stranded
5
⁄16"–18
10103-TB #4 Stranded to 4/0 Stranded
3
⁄8"–16
DB
10102-TB
10103-TB
1
3
⁄16
1
15
⁄32
11
1
⁄32
1
11
⁄16
1
1
⁄4
3
⁄8
1
3
⁄4
15
⁄32
5
⁄32 MAX. CABLE 
TRAY THICKNESS
1211_1836_TNB_TNB_Power Connection & Control Cat31_r7.indd 27 2/24/14 3:27 PM










