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Total Solution to Earthing & Lightning Protection |
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8
Earth bonds & clamps
Mechanical clamps
‘U’ bolt rod clamp (type E)
Nominal rod/ rebar diameter
Hole centres
Tape width
Weight each
Part no.
(”)
(mm)
(mm)
(mm)
(kg)
CR305
Ø
5
⁄
8
Ø 16
37
–
0.20
CR310
Ø
3
⁄
4
Ø 20
37
–
0.20
CR315
Ø 1
Ø 25
37
–
0.20
CR320*
Ø
5
⁄
8
Ø 16
37
25
0.26
CR325
Ø 1
1
⁄
2
Ø 38
54
–
0.37
CR330
Ø 2
Ø 50
64
–
0.44
CR326
Ø 1
1
⁄
2
Ø 38
54
25
0.43
– High strength copper alloy ‘U’ bolt clamp designed to provide a high quality, low resistance connection between flat tape or stranded
conductor and earth rod or rebar. ‘U’ Bolt threaded M10
– *CR320 includes additional plate to allow tape to be clamped without drilling
‘U’ bolt rod clamp (type GUV)
Nominal rod/ rebar diameter
Conductor range Weight each
Part no.
(”)
(mm)
(mm
2
)
(kg)
CR700*
Ø
5
⁄
8
Ø 16
16-95
0.39
CR700*
Ø
3
⁄
4
Ø 20
16-70
0.39
CR705
Ø
5
⁄
8
Ø 16
70-185
0.39
CR705
Ø
3
⁄
4
Ø 20
70-150
0.39
CR730
Ø
5
⁄
8
Ø 16
150-300
0.62
CR730
Ø
3
⁄
4
Ø 20
150-300
0.62
CR710
Ø 1
Ø 25
16-70
0.39
CR740
Ø 1
Ø 25
70-150
0.39
CR750
Ø 1
Ø 25
150-300
0.62
– High strength copper alloy ‘U’ bolt clamp designed to provide a high quality, low resistance connection between solid circular or
stranded conductor and an earth rod or rebar
– Tightening torque 12 Nm
– * Suitable for use with Ø 8 mm solid circular copper conductor
Standards
Standards
UL 467 (CR700,
CR705, CR730)
IEC/BS EN 62561-1 Class H
BS 7430
IEC/BS EN 62561-1 Class H
BS 7430
UL 467 (CR305)