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Insulated Jumper Clamps

All Chance® Insulated Jumpers meet ASTM F 2321 Standard Specification.

Chance Insulated Jumper Clamps are used for bypassing work areas where equipment is under repair, the line is being upgraded, and for making temporary or other emergency repairs. The handles are tough, high impact strength, polyethylene with a wide hand guard flange.

ADEQUATE RUBBER GLOVES MUST BE WORN WHEN INSTALLING OR REMOVING JUMPER CLAMPS.

15 kV Ø-Ø Rated - 300 Amp Capacity

The G4758 series Jumper Clamp has a handle length of 55/8" below the handguard. The bearing type floating washer lower contact improves gripping action and prevents conductor scoring. All metal parts are of copper alloy to improve resistance to oxidation. The 300 amp continuous current rating is based on using 2/0 Jumper Cable on the tap side.

Style I per ASTM F 2321 Standard Specification

Cat. No. Description Main Line Range Jumper Cable Range Weight
Max. Min. Max. Min.
G4758 Pair* of Clamps 336.4 ACSR .721" #6 Copper .162" 2/0 #2 2-1/4 lb. / 1.0 kg.

25 kV Ø-Ø Rated - 400 Amp Capacity

The G4765 series Jumper Clamp has the same polyethylene material in the handle as other Chance Jumper Clamps. The handle length below the handguard is 71/2". The 400 amp continuous current rating is based on using 4/0 Jumper Cable on the tap side.

Style I per ASTM F 2321 Standard Specification

Cat. No. Description Main Line Range Jumper Cable Range Weight
Max. Min. Max. Min.
G4765 Pair* of Clamps 477 ACSR .883" #6 Copper .162" 4/0 #2 2-3/4 lb. / 1.3 kg.

35 kV Ø-Ø Rated - 400 Amp Capacity

The G4775 series Jumper Clamp has a larger contact opening for use on larger contact opening for use on larger conductor distribution lines. The handle length below the handguard is 83/8". Easy to assemble, the connector assemblies are interchangeable between the two sizes of 15 kV Jumper Clamps. The 400 amp continuous current rating is based on using 4/0 Jumper Cable on the tap side.

Style I per ASTM F 2321 Standard Specification

Cat. No. Description Main Line Range Jumper Cable Range Weight
Max. Min. Max. Min.
G4775 Pair* of Clamps 954 ACSR 1.165" #6 Copper .162" 4/0 #2 3 lb. /
1.4 kg.
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