Cables for Fixed Installations

Electrical equipment in hazardous areas may be wired using cable having metallic or non-metallic sheath, or conduit. The use of cable is generally predominant and one reason is its ease of installation compared to conduit.

For the current carrying capacities of wires and cables in various installation types, follow recommended values of relevant international or national standards, unless the contract specifies otherwise.

Cables for potentially explosive atmospheres have to be sufficiently reliable that the likelihood of failure after correct installation is so small that it can be discounted.

The surface temperature of cables should not exceed the temperature class requirements of the installation.

Cable systems and accessories should be installed in positions that prevent them from being subject to mechanical damage, corrosion, chemical attack, heat and other detrimental environmental conditions. Selection of the wiring system and cable type must consider these influences and where exposure to such conditions are avoidable, protective measures such as minimising the risk of mechanical damage by the use of appropriate armoured cable types should be considered