Stripping vs Selling Whole: When It Pays to Dismantle Copper Cable

Every electrician, plumber, M&E contractor, demolition firm and house clearer who has ever generated copper cable has faced the same question. Strip it and sell the recovered copper as bright wire at the top of the market, or sell it whole as insulated cable, with the yard pricing it on assumed recovery. The numbers point in different directions depending on what you are holding, how much of it you have, and what your time is worth.

This article is for both ends of that spectrum. It covers trade sellers generating cable in volume from strip-outs, demolitions, refurbishments and rewires, and domestic sellers turning up at the weighbridge with a coil of household twin and earth or a length of armoured. We also explain how our own metals operation processes low-grade cable into bright wire, because customer transparency on grading is how we earn the trade.  

 What Cable Stripping Actually Means 

Stripping is the mechanical removal of insulation, sheathing and jacketing from copper cable to recover the bare copper conductor. Done well, it converts low-grade insulated cable (ISRI: Druid) into the premium bright wire grade (ISRI: Barley), thereby unlocking the price difference between them.

The principle is simple. Insulated cable is priced based on a recovery rate, which is the percentage of the cable’s gross weight that is recoverable as copper. The remainder comprises plastic, rubber, PVC, paper tape, steel armouring or jute. The yard pays for the copper content, not the insulation. [1] By contrast, bright wire is priced at the full LME-linked rate because it requires no further processing before going to the refiner.

Stripping is therefore a value-recovery exercise. The seller is paid for the difference between the assumed recovery rate the yard would apply to insulated cable and the actual weight of clean copper that can be produced by stripping it themselves. Whether that is worth doing depends entirely on the cable. 

Recovery Rates: Why Cable Type Decides the Answer  

Not all cables yield the same percentage of copper. Recovery rates vary enormously with cable construction, conductor size and insulation type. Knowing the typical ranges is the foundation of the stripping decision. [1][2] 

• Heavy industrial cable (large single-core, busbar feeders, large-section power): 70% to 90% copper. The most economical cable to strip.
• Medium-section power cable (single- and three-phase, mid-range industrial): 60% to 75% copper. Strong stripping economics at scale.
• Domestic twin and earth (T&E), 1.5 mm² and 2.5 mm²: 50% to 65% copper. Marginal; volume and time determine.
• Flexible cord and small-gauge flex: 40% to 55% copper. Rarely worth stripping by hand.
• Steel wire armoured (SWA): 40% to 55% copper after removal of the armour. Downgrades if the steel armour is not separated.
• Data, telecoms and alarm cables (Cat5, Cat6, signal cable): 20% to 40% copper. Almost never worth stripping.
  

A yard typically applies a standard recovery assumption when settling insulated cable (often around 45% for mixed insulated wire, higher for known heavy industrial cable, and lower for data and alarm). [3] Knowing the actual recovery rate for your cable is what lets you decide whether the yard’s assumption is fair, generous or punitive for your particular load. 

 The Stripping Decision: Six Variables That Decide 

For trade sellers, the question is rarely whether to strip, but how far to go. Six practical variables determine the answer.  

Rule of thumb for trade customers: strip heavy industrial cable and medium-section power cable; sell domestic T&E whole unless you are at significant volume; never strip data or alarm cable. Recover the value where the maths supports it; let us recover the value where it does not. 

 When Selling Whole Is the Right Call 

Stripping is not always the right answer. Bringing the cable in whole and letting us strip it makes more sense when: 

•  Recovery is low. Data, telecoms, alarm and flex rarely recoup the stripping labour. 
  
  
•  Volume is small. A homeowner with a coil of household flex is better off selling the whole coil than spending a Saturday for marginal uplift. 
  
  
• Time is tight. A contractor closing out a site by Friday cannot afford a stripping operation. Sell whole, take same-day payment, and move on. 
  
  
• Composition is unknown. Mixed bundles of unsorted cable are difficult to strip economically because the recovery rate is unknown until you start. 
  
  
• Cable is armoured. SWA requires the steel armour to be separated from the copper before stripping yields bright wire. Without the right setup, this is harder than it looks.
  
  
• Provenance and compliance matter. Selling commercial M&E strip-outs whole through a Dunmow trade account creates a single transaction record with clean provenance under the Scrap Metal Dealers Act 2013.  

How Dunmow Group Processes Low Grade Cable into Bright Wire  

Transparency on these matters. When a customer sells us insulated cable, we do not simply pass it on. Our metals operation is set up to recover copper from low-grade cable and grade it back up to bright wire (Barley) for sale to refiners. That is part of how we add value and how we are able to pay competitive rates for insulated cable in the first place.

The process at our Chelmsford metals facility runs in three stages: incoming cable is weighed, graded by type and segregated into the relevant processing stream; mechanical stripping and granulation recover copper to Barley (bare bright) specification; and the recovered bright wire is consolidated and sold to UK and European copper refiners under ISRI/ReMA specifications, where it enters the cathode refining process that produces 99.99% pure copper used in new manufacturing. The separated insulation is recycled as plastic waste through licensed downstream partners.

The reason we explain this openly is straightforward. When a seller brings us low-grade cable, we do not make margin from misgrading their load. We make margin from the processing capability we have invested in. The two are different, and the difference matters for the trust we want our trade and domestic customers to have in our weighbridge. That investment in processing is the Innovation value made operational, and the discipline of running it well is what lets us offer fair rates on insulated cable and still pay competitively on bright wire.  

What Contaminates a Cable Load and Costs You Money

Even sellers who believe they are presenting clean cable often slip on grading. Common contaminants and downgrades: 

• Mixed cable types in one bundle: unsorted bundles default to the lowest recovery rate in the mix. Separate by type before weighing. 
  
  
• Steel armouring left attached: SWA with the steel still in place grades lower because the steel contaminates the copper stream until it is separated. ift. 
  
  
• Plug tops, fittings, sockets, back boxes: brass, plastic and steel rather than copper. Cut them off and weigh them separately. 
  
  
• Burnt cable: illegal under UK environmental law, and reputable yards will refuse it. Recovered copper is also embrittled and downgraded to Cliff (No. 2) at best.  
  
  
• Tinned or coated copper conductors: found in older marine and some industrial cables. Grades are lower because tin contaminates the refining stream. .
  
  
• Oil, mud and site debris: typical of underground or strip-out cable. Cleans easily; if left, reduces the grade. 
  
  
• Aluminium-core cable presented as copper: modern overhead and some power cables use copper-clad aluminium (CCA). Visual inspection at the weighbridge identifies it. Aluminium is graded and priced on its own scale entirely. 

Innovation in our processes, from segregated weighbridge lanes to live grade ticketing, exists so that customers see the value of clean presentation in their settlement. 

The Law: Scrap Metal Dealers Act 2013  

Every legitimate copper-cable transaction in England and Wales is governed by the Scrap Metal Dealers Act 2013 (SMDA 2013), which came into force on 1 October 2013 in direct response to a UK copper theft crisis. Within a year, British Transport Police recorded an 80% drop in railway-cable theft incidents and associated delays. [6][7] Copper cable, more than any other material, is the metal that prompted this legislation.

Four core requirements apply to all legitimate cable transactions:

Licensing: every scrap metal dealer must hold a council-issued site licence or collector’s licence. Dunmow Group holds full site licences at each of our three Essex facilities. [7][8]

Cashless payment (Section 12): It is a criminal offence to pay for scrap metal in cash, with no exemptions. Permitted methods are non-transferable (“crossed”) cheques or electronic transfers. If a buyer offers you cash for cable, walk away. [9]

ID verification: dealers must verify identity (UK photocard driving licence or passport, supported by proof of address dated within the previous three months where required) before each transaction. For trade customers on account, verification is completed at account opening. [9]

Record-keeping: every transaction is logged (seller, ID, vehicle registration, material, weight, price, payment method) and records are retained for at least three years for inspection by police or council enforcement officers. [7][9]

Cable poses the highest theft risk of any common scrap material, and police and BTP officers regularly visit scrap yards to inspect records. A traceable transaction with a licensed dealer, on a calibrated weighbridge, with valid ID and a payment audit trail, cannot be challenged later.  

How a Cable Weighbridge Transaction Should Work  

•  Weighed in (gross). The loaded vehicle is weighed on a calibrated weighbridge. 
  
  
•  Identity verified. The seller presents photographic ID. For trade accounts, credentials are verified. 
  
  
• Cable is inspected and graded. A trained operator inspects the cable and assigns grades (bright wire, heavy insulated, T&E, armoured, data, flex). Each grade settles at a different rate based on its recovery percentage. 
  
  
•  Material discharged. Each grade is tipped into its designated bay.  
  
  
• Weighed out (tare). The empty vehicle is reweighed; net weight is gross weight minus tare. 
  
  
• Ticket issued and payment processed. The weighbridge ticket records all transaction details, including a grade-by-grade breakdown. Payment is processed by electronic transfer, normally same-day, at our Chelmsford metals facility. 
  
  
•  This is the audit trail that protects both parties under the SMDA 2013, and it gives the seller confidence that the grades and weights on the ticket are exactly as paid for. 

The Trade Account Advantage for Cable Sellers 

For electricians, M&E contractors, demolition firms and rewire specialists who regularly generate cable, a trade account is the operational solution. A Dunmow Group trade account offers:

Pre-verified ID and account details: no repeated verification on each visit.

Monthly statement settlement for all non-ferrous deliveries, eliminating per-visit administration.

Priority weighbridge access at our Chelmsford metals facility.

Roll-on, roll-off (RoRo) containers for high-volume strip-outs, delivered to site and available in 20, 30 and 40 cubic yard capacities. Suitable for commercial fit-outs, MEP refurbishments and full-site demolitions where cable volumes warrant a dedicated container.

Scheduled business collections for premises with continuous cable output (electrical contractors, M&E specialists, and fabricators).

Waste Transfer Notes and ISO-certified documentation are standard and covered by our ISO 9001/14001/45001 accreditations. [10]

This is what running a tight ship looks like on the customer side: fast, easy, reliable, and fully compliant with every transaction. 

Dunmow Group: Where Your Cable Becomes Same-Day Cash 

We operate three scrap metal weighbridge facilities across Essex (Chelmsford, Colchester/Brightlingsea, and Clacton), accepting all categories of ferrous and non-ferrous metal. Our dedicated metals weighbridge at Chelmsford provides precise, calibrated weighing for every load, with same-day electronic payment to the seller’s nominated account. [11]

That same-day payment is the operational standard we hold ourselves to. Do what we say. It is the first of our three customer commitments, and on the cable weighbridge, it means a clear grade-by-grade ticket, a clean weight, a fair price, and payment processed before the seller leaves the site. 

Our Essex Metals Facilities:

• Chelmsford Metals: Regiment Business Park, Eagle Way, Chelmsford CM3 3FY.
  Open Monday–Friday 7:30 am–4:30 pm.
• Colchester (Brightlingsea): Morses Lane, Brightlingsea CO7 0SD.
  Open Monday–Friday 7:30 am–5:30 pm | Saturday 7:00 am–12:30 pm.
• Clacton: Gorse Lane Industrial Estate, Stephenson Road, Clacton-on-Sea CO15 4XA. Open Monday–Friday 7:30 am–5:30 pm | Saturday 7:30 am–12:30 pm
  

For trade customers with active sites, we deliver RoRo containers (20, 30 or 40 cubic yards) directly to site, schedule pickups around your programme, and settle your trade account on monthly terms. 

Our Commitment:  PITCH in Practice on the Cable Weighbridge 

Our five core values, Passion, Innovation, Trust, Community, Hard Work (PITCH), are how we run the metals operation, not a poster on the wall. 

• Passion:  We care that every cable seller leaves with the correct grade, weight, and price. Our weighbridge operators are trained to identify the cable type, assess the recovery rate honestly, and explain the grading decision to the seller. 
  
  
• Innovation: Our investment in mechanical stripping and granulation enables us to offer competitive rates on insulated cable. Calibrated digital weighbridges, live grade ticketing, electronic same-day settlement and a digital customer portal reduce paperwork and increase transparency. 
  
  
• Trust:  Fully licensed under the Scrap Metal Dealers Act 2013, ISO 9001/14001/45001 certified, and operating to recognised ISRI/ReMA non-ferrous specifications. Every payment is electronic, every transaction is logged, and every grade is defensible. When copper cable provenance matters, our paperwork is your protection.
  
  
• Community:  Essex is our home. We support businesses, sites and householders across the county with the same standard of service, from a single coil of T&E to a 40-yard RoRo of commercial strip-out cable 
  
  
• Hard Work: A tight, professional operation that delivers value for money without compromising accuracy, safety or compliance. 

Choosing Dunmow Group means choosing a partner that is safe and compliant, delivers great value, and makes the entire ferrous recycling process fast and easy. These are the three operational drivers we hold ourselves to on every single weighbridge ticket. 

The Bottom Line

Stripping copper cable is worthwhile when the recovery rate is high, the volume is significant, the live copper price covers labour, and the operation can be carried out safely and lawfully. For heavy industrial and medium-section power cable in volume, stripping is almost always worth it. For domestic T&E, it is marginal, depending on labour costs. For data, alarm and flex cable, it is rarely worth the effort.

What matters in every case is weighing in at a licensed, calibrated, professionally run facility, with valid ID, traceable payment, and a ticket that breaks the load down grade by grade. Where you choose to strip, do so safely. Where you choose to sell whole, sell to a yard with the processing capability to grade your cable accurately and pay you at its true recovery rate. That is what we do at Dunmow Group. Our investment in stripping and granulation is exactly why we can offer fair rates on insulated cable at the weighbridge.

Bring your copper cable to Dunmow Group at Chelmsford, Colchester or Clacton and weigh in with confidence. For site-generated volumes, open a trade account, and we will deliver the container to you. 

Call us on 01245 444888 (Chelmsford) | 01255 360031 (Clacton) | 01206 307070 (Colchester - Brightlingsea) | Whatsapp: 07902 802802

References & Citations 

[1] Recycled Materials Association (ReMA, formerly ISRI): ISRI Scrap Specifications, non-ferrous (Barley, Berry, Birch, Candy, Cliff, Druid). https://www.isrispecs.org

[2] Industry recovery-rate data for copper cable by cable type (heavy industrial, medium-section power, T&E, armoured, data, flex). Composite reference from BMRA / ReMA member specifications and UK trade practice.

[3] UK scrap yard standard settlement practice for insulated cable based on assumed recovery rates; rates vary by yard, by cable type, and by live copper market.

[4] Security Journal UK: Cable and copper theft on the rise in North-West England (September 2025 record copper price of $10,300 per tonne). https://securityjournaluk.com/cable-copper-theft-rise-north-west-england/

[5] Environment Agency / DEFRA: Open burning of waste and cable burning regulations under the Environmental Permitting (England and Wales) Regulations 2016. https://www.gov.uk/guidance/environmental-permits-for-waste-operations

[6] BBC News: Cable theft delays on railways fall sharply (80% reduction following SMDA 2013). https://www.bbc.co.uk/news/uk-29109733

[7] Scrap Metal Dealers Act 2013 | legislation.gov.uk. https://www.legislation.gov.uk/ukpga/2013/10/contents

[8] Dunmow Group: Certifications & Permits. https://www.dunmowgroup.com/about-us/documents/

[9] Home Office Supplementary Guidance: Cashless payment (Section 12) and identity verification under SMDA 2013. https://www.gov.uk/government/publications/scrap-metal-dealers-act-2013-supplementary-guidance/scrap-metal-dealers-act-2013-supplementary-guidance-accessible

[10] Dunmow Group: ISO 9001, ISO 14001, ISO 45001 accreditations. https://www.dunmowgroup.com/about-us/documents/[11] Dunmow Group: Scrap Metal Recycling Essex. https://www.dunmowgroup.com/scrap-metal-essex/