Installation Guide

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Dual-Rated Mechanical Connectors
Connectors & Grounding — Blackburn
®
Mechanical Connectors
Type GT — Aluminum Dual-Rated
Mechanical Parallel Tap Connectors
Type TC — Insulating Covers for GP-GT
CAT. NO.
CONDUCTOR RANGE
(AL OR CU) DIMENSIONS (IN.)
MAIN TAP W L H
GT-2* 2–12 Str. 4–14
5
⁄8 1
3
⁄8
7
⁄8
GT-0 1/0–2 1/0–14
3
⁄4 1
3
⁄4 1
GT-250-0 250–1/0 1/0–14 1
1
⁄16 2
9
⁄32 1
5
⁄16
GT-250 250–1/0 250–6 1
1
⁄16 2
9
⁄32 1
5
⁄16
GT-350 350–4/0 350–6 1
1
⁄4 2
9
⁄16 1
7
⁄16
GT-500 500–350 500–2 1
3
⁄8 3
1
⁄8 1
3
⁄4
GT-750 750–500 500–2 1
1
⁄2 3
3
⁄8 2
* Slotted screw, tap side.
To include insulating cover, add suffix WC.
Tightening Torque Values for Aluminum Dual-Rated Socket Screw Connectors
AWG OR
CIRCULAR
MIL SIZE
TIGHTENING TORQUE IN IN.-LB.
AWG OR
CIRCULAR
MIL SIZE
TIGHTENING TORQUE IN IN.-LB.
SCREW DRIVER WRENCH SCREW DRIVER WRENCH
12 20 75 4/0 — 200
10 20 75 250 — 250
8 20 75 350 — 250
6 35 100 500 — 300
4 35 100 600 — 300
2 50 125 700 — 300
1 50 125 750 — 300
1/0 50 150 800 — 400
2/0 50 150 1,000 — 400
3/0 — 200
CAT. NO.
DIMENSIONS (IN.)
USE WITH CONNECTORL W H
TC-2 2
1
⁄8 1
3
⁄4 1
1
⁄16 GP-2, GT-2
TC-10 2
1
⁄2 2
13
⁄32 1
1
⁄4 GP-0, GT-0
TC250350 3
1
⁄8 2
17
⁄32 1
19
⁄32
GP-250, GT-250, GP-350,
GP-250-0, GT-250-0, GT-350
TC-500 4
1
⁄4 3
1
⁄8 2
1
⁄16 GP-500, GT-500
TC-750 4
5
⁄8 3
7
⁄8 2
1
⁄2 GP-750, GT-750
Color of all covers is black.
L
W
H
L
W