This is what a buyer checks before they shortlist a electrical and electronics supplier.
What does a buyer check before ordering cable?
They check the conductor size and material, the insulation and sheath, and the voltage rating against a named standard. Then fire performance, which has become the governing requirement in building work and is where cheaper cable usually differs.
An electrical contractor is buying cable that will be inspected and must satisfy a building's fire specification.
Reviewed 4 August 2026 · Written for cable and wire manufacturers selling to business buyers
What does a buyer check before ordering cable?
What a buyer needs to identify the product
These are the fields a buyer scans before deciding whether you are worth contacting. Missing one of them usually ends the visit without an email.
- 1
Conductor material and cross-section
Copper and aluminium at a stated size.
- 2
Number of cores and configuration
Determines the application.
- 3
Insulation and sheath material
Governs temperature rating and fire behaviour.
- 4
Voltage rating
The specification the installation is designed to.
- 5
Standard the cable is manufactured to
Determines acceptance and testing.
- 6
Fire performance classification
Now the governing requirement in most building work.
- 7
Current carrying capacity
The figure the installation design uses.
The documents buyers ask for
Not all of them belong on a public page. Naming the ones you can issue is what separates a supplier who can be audited from one who cannot.
| Document | What it proves | Where it belongs |
|---|---|---|
| Type test certificateAsked at: specification and approval | Conformity with the cable standard the product claims | Publish it |
| Routine test certificateAsked at: every delivery | Electrical tests performed on the delivered drum | Per shipment |
| Fire performance test reportAsked at: building projects — often decisive | Reaction to fire or circuit integrity under a named standard | Publish it |
| Conductor resistance test reportAsked at: acceptance | That the conductor meets the specified resistance | Per shipment |
| Third-party certificationAsked at: regulated markets | Independent product certification where the market requires it | Publish it |
| Substance compliance declarationAsked at: procurement | Compliance for the destination market | Publish it |
| Drum length and marking specificationAsked at: ordering | Standard lengths, marking and packing | Publish it |
Where cables and wiring sites lose the enquiry
Each of these is common, cheap to fix, and costs an enquiry that never arrives — so nobody ever reports it.
Fire classification not published
Fire performance now governs cable selection in most building work. Cable without a stated classification cannot enter those specifications.
Standard named without a number
Cable standards define construction, testing and rating. A reference to "international standards" cannot be checked or specified.
Current carrying capacity omitted
It is the number an installation designer works from. Its absence pushes the designer to a manufacturer who published tables.
What the enquiry form should ask
A form that collects these can be answered properly the first time. A form that collects a name and a message cannot.
Enquiry form — cables and wiring
Enough to reply usefully, short enough that a buyer finishes it.
- Cable type and voltage rating
- The core specification.
- Conductor size and number of cores
- Determines the product.
- Fire performance requirement
- Frequently the binding constraint.
- Installation environment
- Buried, ducted, tray and armoured differ.
- Quantity and drum lengths
- Drives price and cutting.
- Standard the project specifies
- Decides acceptance.
Questions suppliers ask
Why has fire classification become the first question?
Because building fire specifications now name cable classifications explicitly, and installations are inspected against them. A cable that cannot be matched to a classification cannot be installed in those buildings, which makes it the first filter rather than a technical footnote.
Should current carrying capacity tables be published?
Yes. They are what an installation designer uses, and having them available makes your cable easy to design in. Manufacturers who publish them get specified at the design stage rather than quoted at the purchasing stage, which is a much better position.
How do we compete against substandard cable on price?
By making the differences checkable: conductor resistance, insulation thickness, the test standard and third-party certification. Undersized conductors are the most common form of substandard cable, and a supplier who explains how to verify it wins the buyers who have been caught.
Documents and standards named here are the ones buyers in this industry commonly ask for; requirements vary by market, customer and contract, so treat this as a starting checklist rather than a compliance list. Clearer pages can help discovery and evaluation. They do not guarantee rankings, AI citations, enquiries or revenue.
Illustrative
An enquiry from this search looks like: Conductor size and number of cores · Cable type and voltage rating · Fire performance requirement · Installation environment
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