Low Smoke, Zero Halogen (LSZH) 5KV/8KV Shielded Cables

Yes. Single-conductor 5kV/8kV cables can be installed as part of a three-phase circuit when the cable arrangement and installation method meet the system's requirements.

Using individual conductors gives system designers flexibility in routing and arranging the phases. The installation must account for conductor spacing, conduit or duct fill, ampacity, shielding, grounding, and the electrical characteristics of the circuit. The appropriate configuration should be established by the project's engineering requirements rather than simply grouping three cables together.

“For CT use” indicates that qualifying cable sizes are identified for use in cable tray applications under the applicable listing requirements.

This designation is important when cable tray is part of the planned installation method. Not every conductor size in this product family carries the same CT-use marking, so buyers should verify the specification for the exact size being ordered. Cable tray suitability should not be assumed solely because another size within the same 5kV/8kV product family has the designation.

The smaller conductor sizes in this product family do not carry the same CT-use designation as the qualifying larger sizes.

According to the product specifications, sizes smaller than 1/0 AWG do not include the “FOR CT USE” marking. This makes conductor size relevant to more than ampacity alone. When a project requires installation in cable tray, the required electrical capacity and the cable's applicable tray-use designation should both be confirmed before a catalog number is selected.

Conduit selection must provide adequate space for the complete group of medium-voltage conductors while meeting applicable fill and installation requirements.

The finished outside diameter of the cable increases with conductor size, so the same raceway cannot automatically be used across the full product range. The published conduit sizing for this family is based on three single cables in PVC Schedule 40 duct with specified fill assumptions. Actual installations should also account for the conductor arrangement, bends, pulling conditions, grounding components, and project-specific requirements.

Ampacity can change because the surrounding installation environment affects how efficiently heat can dissipate from the conductors.

Cable installed in conduit in air and cable installed in an underground duct operate under different thermal conditions. The published ampacities for this product family therefore use different installation assumptions, including ambient air or earth temperature and underground thermal resistance. When selecting conductor size, ampacity should be based on the conditions that represent the planned installation rather than treating a single current rating as applicable everywhere.