What contractors, distributors and panel builders ask before a first order.
What minimum order quantity should I expect?
For standard building wire and low-voltage power cable, most manufacturers work from a few drums or a few thousand metres per size, and many will consolidate several sizes into one shipment to make a full load. Medium-voltage cable is usually made to order with a minimum production run per size and colour, often one to several kilometres. Special constructions carry a compound batch minimum, which is the real constraint: the extruder has to be set up and purged, so a short run of an unusual cable is expensive per metre regardless of the metal.
How long does a first order take?
For standard ranges held in stock or in regular production, two to four weeks plus transit, so roughly three to six weeks door to door into Europe. Made-to-order low-voltage cable runs four to six weeks. Medium-voltage cable takes six to ten weeks and longer if type testing is required. Add time if a new colour or a custom print legend is involved, since both mean a production changeover rather than a scheduling decision.
Why do cable quotes vary so much between suppliers?
Usually because they are not quoting the same thing. Three causes account for most of it: different metal price bases and dates, different conductor classes under EN 60228 for the same nominal area, and different CPR Euroclasses. A fourth is insulation thickness at the tolerance limit. Ask for the metal split, the conductor class and the Euroclass in writing and most of the apparent variation disappears, leaving the conversion premium, which is the number you should actually be negotiating.
What CPR Euroclass do I need?
That is set by the national building regulations of the country where the cable is installed, not by the manufacturer or by the CPR itself, which only harmonises how performance is declared. Practically, Eca is the baseline for many general applications, Dca and Cca appear in commercial and public buildings, and B2ca in high-risk environments such as tunnels, hospitals and evacuation routes. The additional classifications matter as much as the letter: s1 for low smoke, d0 or d1 for droplets, a1 for low acidity. Confirm the requirement with the specifier before you buy, because the compound cannot be changed afterwards.
What is the difference between LSZH, flame-retardant and fire-resistant?
Three different properties that are constantly conflated. Low-smoke zero-halogen describes what the cable emits when it burns, which matters for evacuation and for corrosion damage to equipment. Flame-retardant describes how far fire spreads along the cable, tested under EN 60332. Fire-resistant means the circuit keeps working during a fire for a stated period, which is what emergency lighting, alarms and smoke extraction need. A cable can be LSZH and not fire-resistant, and a fire-resistant cable is not automatically low smoke. Specify the property you actually need.
Should I buy copper or aluminium conductors?
Aluminium is significantly cheaper per metre for the same current-carrying capacity, but needs roughly a 60 percent larger cross-section, which means bigger cable, bigger bending radii, more tray space and different terminations with the correct jointing compound to prevent oxidation. It makes sense for long runs of larger low-voltage and medium-voltage distribution cable where the metal cost dominates. It rarely makes sense for small sizes, flexible applications or anywhere space is tight. Decide before the enquiry, because the two are not interchangeable at the panel.
Do Turkish cables carry CE marking and European approvals?
Established manufacturers do. CE marking is self-declared under the Low Voltage Directive and, for building cable, accompanied by a CPR Declaration of Performance issued against EN 50575 with a notified body involved. Many manufacturers also hold HAR, VDE or other national approval marks, which involve independent testing and factory inspection and therefore carry more weight than self-declaration. Verify approval marks with the issuing body directly rather than accepting a scanned certificate.
How do I verify a supplier before a first order?
Ask for the Declaration of Performance with the exact Euroclass string, the type and routine test reports with test numbers, and the certificate numbers of any approval marks, then verify those numbers with the issuing bodies rather than with the supplier. Ask whether the plant makes its own compound and its own copper rod. Then order one drum and test it. Cable is easy to verify physically, because conductor resistance and insulation thickness are measurable in an afternoon.
Is Turkish cable cheaper than European supply?
The conversion premium usually is, sometimes substantially, and that is the negotiable part of the price. The metal is a world price and no one has an advantage there. For a European buyer the bigger gains are duty-free entry under the Customs Union and road transit measured in days, which lets you hold less stock of a product that ties up a great deal of capital per pallet. Against Asian supply the price gap narrows but the lead time advantage is decisive for anything project-driven.
Can Turkish manufacturers make cable to my own specification?
Yes, and it is common work. The larger plants will produce to a customer drawing or to a national standard other than the Turkish one, including custom colours, print legends and drum arrangements. The constraint is the compound batch minimum and the extruder changeover, so a bespoke construction is economic at a few kilometres and expensive at a few hundred metres. Send the full specification including the standard, the conductor class, the required approvals and the fire performance, and ask for a sample length before the production run.