Cumberland EDGE 890-00601, Инструкция по установке и эксплуатации

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Chapter 1: Introduction
Figure 1-1 Grounding installation depending on bedrock depth
• If the bedrock is more than 3 meters (10 feet) below ground level, drive the grounding rod vertically
3 meters (10 feet) into the ground.
• If the bedrock is more than 1.2 meters (47 inches) below ground level, drive the rod into the ground
to bedrock level and bury the remainder horizontally at least 0.6 meters (2 feet) below ground level.
• If the bedrock is less than 1.2 meters (47 inches) deep, bury the rod horizontally at least 0.6 meters
(2 feet) below ground level.
NOTE: Refer to your local regulations and practices if an adequate grounding installation isn’t possible.
Rod specifications for grounding
The rod specifications are guidelines only. Refer to your national and local regulations for compliance
criteria.
Table 1-4 Grounding rod specifications
Item Description
Material Metallic, normally steel core.
Rod surface The surface must be clean. It cannot be coated with paint, varnish or any non-conducting
substance.
Minimum diameter 16 mm (5/8 inches)
Minimum length 2440 mm (8 feet)
Cable specifications for grounding
The cable specifications are guidelines only. Refer to your national and local regulations for compliance
criteria.
Table 1-5 Grounding cable specifications
Item Description
Certification and
type CSA, TEW type.
20 895-00693 EDGE