Nov. 12, 2026
Copper or aluminium LV cable? Compare two designs that meet the same project requirements before comparing their prices. A lower cable price per metre can be offset by changes to conductor size, terminations, containment, installation or delivery. This guide gives project buyers a practical way to request and review alternatives for 0.6/1kV power distribution.
It applies to procurement discussions for projects in the Middle East, Africa, South America and Southeast Asia. The accepted conductor material, product standard and installation rules must still be confirmed for the particular country, utility and project.
Copper has higher electrical conductivity than aluminium. An aluminium conductor generally needs a larger cross-sectional area to achieve comparable resistance, while offering a lower conductor weight. The finished cable's dimensions and mass depend on its complete construction. These material differences are explained in Eland Cables' conductor comparison.
Do not treat equal nominal cross-sections as equivalent designs. Ask the project engineer to approve each option against the load, voltage drop, short-circuit duty, protective devices, installation method and termination limits. A material conversion ratio alone cannot select a cable.
| Cost or requirement | What to compare for each approved option |
|---|---|
| Cable supply | Approved conductor size and class, core arrangement, insulation, armour, sheath, total length and quotation date. |
| Terminations | Compatible lugs, glands, joints, transition connections and equipment terminal capacity. |
| Containment and routing | Actual cable diameter, bend limits, tray space, duct capacity and entry arrangements. |
| Installation | Drum handling, pulling method, equipment, labour, access and any additional joints. |
| Transport and packaging | Drum count, agreed continuous lengths, gross weights, dimensions and delivery scope. |
| Operation | Calculated losses for the approved design and expected load profile, using a common evaluation period. |
| Commercial conditions | Currency, quote validity, exclusions, inspection, delivery schedule and payment milestones. |
A useful worksheet separates installed project cost from the estimated cost of operation. For installed cost, add cable supply, accessories, logistics and installation on the same scope. If operating losses are included, record the load assumptions, operating hours and energy price used. Label estimates clearly so they are not mistaken for supplier commitments.
Confirm that the equipment terminals and connection accessories accept the proposed conductor material, class and size. Where materials change at a connection, request an approved compatible connection arrangement and the accessory manufacturer's installation instructions. Do not assume a lug selected for the copper option can be reused.
Termination fit and compression are material procurement checks: BASEC's guidance on aluminium conductors highlights the importance of suitable termination systems. Include the required accessories in the offer, or identify who will supply and approve them.
If a BOQ specifies copper, ask for a compliant copper offer first. An aluminium alternative should be clearly labelled and supported by a separate datasheet and deviation schedule. The supplier's lower price does not itself authorise a design change.
Use the same route length, service conditions and delivery destination for both offers.
Require the conductor sizes proposed by the project engineer; flag unresolved sizing rather than guessing.
Keep the required voltage, insulation, armour, sheath performance and test scope explicit.
Ask for actual overall diameter, mass, drum schedule and connection requirements.
Separate an accepted technical offer from an option still awaiting approval.
For the commercial comparison, use our 0.6/1kV cable price comparison checklist. It helps prevent a supply-only price being compared with an offer that includes freight or accessories.
Illustrative enquiry, not a completed cable design: “Please quote the attached approved copper cable schedule as Option A. We are also evaluating an aluminium alternative for the same feeder duty. For Option B, identify the proposed construction and all deviations, provide the required engineering data, and list the compatible termination requirements. Both offers must show total metres, drum lengths, delivery scope, validity and exclusions. The alternative remains subject to project approval.”
Attach the load schedule and route information if the alternative has not yet been sized. For long feeders, explain the permitted voltage drop; for underground routes, include the installation conditions used in the design. High ambient temperature, grouping and equipment constraints should be resolved before the comparison becomes an order.
No. Compare current offers for approved designs, then add accessories, installation and logistics. The answer can change with the route, available space, termination requirements and order quantities. A fixed savings percentage is not a reliable purchasing rule.
Do not assume so. The alternative needs an engineering check and project acceptance. Equal cross-sectional area does not mean equal resistance, current rating or suitability for the existing terminals.
Conductor material alone does not establish product quality. Review the specified construction, applicable standard, manufacturing and test documentation, and compatibility with the intended installation for either material.
Send the approved BOQ, conductor material and sizes, voltage, insulation, armour, sheath, required standard, quantities, drum lengths and destination. Mark alternatives separately and attach the acceptance criteria.
Browse our 0.6/1kV low voltage power cable range, then send Honglin Cable your BOQ or datasheet for a quotation. State whether you need the specified construction only or a separately identified alternative. Availability, technical conformity and delivery terms will need confirmation for the requested cable.
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