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In manufacturing plants and multi-storey buildings, electrical installations begin with the distribution circuits from the Transformer Station or Electrical Room, or with the service entrance cable to the main panel in the case of single- or multi-family dwellings. Whatever the service being provided…power, control, security, data or voice communication…the objective is to have continuous, reliable, trouble-free operation, in a system that is able to withstand unexpected demands and overload conditions.
For each building the particular load requirements and range of services must be considered when selecting the sizes and types, in conformance with the local electrical code. There are distinct benefits from specifying a copper-conductor wire and cable that has been manufactured under rigid specification and quality control procedures. It can be counted-on to provide maximum performance with minimum maintenance.
The types of wire and cable are divided into seven main groups. The seven principal types of wire and cable 'in buildings', are:
• Single-Conductor Cables
• Non-Metallic Sheathed Cables
• Armoured Cables
• Teck Cables
• Instrumentation Cables
• Low Voltage Cables
• Communications Wire & Cable
There are sub-types under these main headings, and variations of sizes and design for each type. Only the most common ones are shown here. In the wire and cable descriptions a number of insulation and jacket materials have been abbreviated as follows:
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Cross-Linked Polyethylene
Ethylene-Propylene Rubber
Polyvinyl Chloride
Polyethylene
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XLPE
EPR
PVC
PE
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