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Tinned copper vs CCA boundary wire

Updated: October 2026

Two reels can look the same on the lawn and say different things in the bullet. One says tinned copper. The other says tinned copper-plated aluminium, which is copper-clad aluminium, usually shortened to CCA. Tinned copper vs CCA boundary wire is which metal the listing names, not which jacket looks thicker and not whether the box says original. The seven listings are on the [Boundary wire comparison](/hub/lawn-and-garden-equipment/boundary-wire). Peter F. checked the saved listings on 22 October 2026. A qualifying purchase can earn a commission at no extra cost to you. We did not measure resistance in a lab.

Two reels can look the same on the lawn and say different things in the bullet. One says tinned copper. The other says tinned copper-plated aluminium, which is copper-clad aluminium, usually shortened to CCA.

Our top picks

Gardena Gardena 150 m boundary wire

Best overall

Gardena Gardena 150 m boundary wire
8.5/10about £82.99
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COZCLAM COZCLAM 175 m boundary wire kit

Best value

COZCLAM COZCLAM 175 m boundary wire kit
7.8/10about £33.52
View offer
JAVEX JAVEX 153 m tinned copper wire

Alternative

JAVEX JAVEX 153 m tinned copper wire
7.6/10about £79.99
View offer
On this page
  1. 1.Two metals, not two thicknesses
  2. 2.When the dearer core is the point
  3. 3.When clad aluminium is still reasonable
  4. 4.What these listings actually say

Two metals, not two thicknesses

Tinned copper is a copper conductor with a tin coat, so the surface corrodes more slowly where you have stripped it for a joint. CCA is an aluminium core with a copper layer. It is lighter and cheaper. Aluminium conducts less well than copper. That is not a timed failure rate for any kit in this comparison. Outer diameter is the jacket. Dynamow specifies one 2.7 mm tinned-copper reel as 1.0 mm² with a maximum of 20 ohms/km. Those figures belong to that cable, not to the reels here. A trade note says a 2.7 mm jacket can hide anything from about 0.68 mm² to 1.42 mm² of conductor. Husqvarna’s UK page lists the standard wire as aluminium plus copper, at 2.7 mm, and the heavy-duty wire, at 5.3 mm, as a tinned copper core. Buying the original has not automatically bought solid copper. Length and pegs come first on the boundary wire buying guide.

When the dearer core is the point

Choose tinned copper when the route is long, or when the wire you are replacing has already corroded and lost signal. A core that has already rusted through is evidence on your lawn, not a theory. Dynamow’s own copy says CCA has higher resistance than tinned copper of the same core size and is more likely to break as the ground moves. That is a seller’s claim, not a ranking of these listings. In this set the reel that states tinned copper is the JAVEX BH-T34-153, at about £79.99 for 153 m, 3.4 mm, 24 strands written as 24 x 0.25 mm. Thirty-seven reviews at 4.3 do not prove a service life, and pegs are not in the box. The Gardena 150 m spool at about £82.99 does not name a metal, so original is not a copper claim. If the listing does not name the metal, treat it as unknown. The WORX line guesses copper or aluminium. Leave that guess unknown.
Gardena Gardena 150 m boundary wire

Testsieger

Gardena Gardena 150 m boundary wire
8.5/10about £82.99
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When clad aluminium is still reasonable

CCA is a fair repair when the run is short, the manual allows that length, and you can make a sealed joint. A guide that was about 6–8 m short, which is the sort of gap one review in this set filled with a 50 m spool, does not need the dearest core on the page. Do not claim that CCA fails within a year, or within any fixed number of seasons. An unsealed joint fails in the rain whether the core is copper or aluminium. Skip CCA when a thin clad loop has already failed in the wire, not in one connector. ECENCE prints 0.13 inch and 17 AWG in one bullet and does not say which is the jacket. That pair is not a converted copper area.

What these listings actually say

JAVEX is the only row here that states tinned copper in the title and copper in the material cell, at 3.4 mm and about £79.99, wire only. COZCLAM at about £33.52 states 24 strands of tinned copper-plated aluminium on a 175 m kit with 100 pegs. Both FOTEEMO rows state tinned copper-clad aluminium. The about £27.98 row agrees on 150 m. The about £34.98 row says 200 m in the title and 100 m in the bullet. Gardena, WORX WA0184 and ECENCE do not name a conductor you can score. If the listing is silent, decide on length and pegs instead of inventing a core. Who those rows are for, as products rather than as metals, is the best boundary wire page.

Common questions

What is CCA on a boundary wire?
CCA is copper-clad aluminium: an aluminium conductor with a copper layer, often sold as tinned copper-plated aluminium. It is the metal COZCLAM and both FOTEEMO listings in this set name. It is not the same as tinned copper, which is a copper core with a tin coat. The jacket colour does not tell you which you have.
Is tinned copper always worth the extra?
It earns the extra on a long loop or when the wire you are lifting has already corroded. In this set that stated copper reel is the JAVEX at about £79.99, against clad kits around £28 to £35. On a short, sealed repair the cheaper clad wire can still be the reasonable buy. The extra is not worth it if you only needed a few metres of guide and the station pins are the real constraint.
Is the original Husqvarna wire copper?
The standard UK reel is specified as aluminium plus copper, at 2.7 mm. The heavy-duty reinforced reel is specified as a tinned copper core, at 5.3 mm. Original is two products. Gardena’s 150 m spool in this comparison does not name a metal, so you cannot call that one copper either.
Will CCA break within a year?
There is no such figure in the sources behind this page. A seller, Dynamow, says CCA is more likely to break as the ground moves and that it has higher resistance than their tinned copper of the same core size. That is their claim, not a timed failure rate for these kits. An open joint will fail on either metal after rain.
What should I do at the joint if the metals differ?
Use the coupler the station maker specifies, strip back to bright metal, and seal the joint. Gardena asks for an original coupler on its 150 m reel. Do not twist and tape. A mixed joint that is open to soil corrodes at the exposed end whatever the reel cost. If the jacket will not enter the connector, the wire is too thick for that station, and the metal argument is beside the point.

Related pages

How to lay boundary wire

Boundary wire

Best boundary wire: short repair, kit or copper reel

Boundary wire break: pins first, then the test loop

Boundary wire buying guide: metres, metal and pegs

Sources

Public UK sources listed in the research digest, plus the amazon.co.uk listing files for prices, stars and review counts. Checked on 22 October 2026.

  1. Husqvarna UK: standard Automower boundary wire (retrieved 22.10.2026)
  2. Husqvarna UK: heavy-duty boundary wire (retrieved 22.10.2026)
  3. Husqvarna UK: how to lay a guide wire (retrieved 22.10.2026)
  4. Husqvarna UK: find and repair a wire break (retrieved 22.10.2026)
  5. Gardena UK: boundary wire 4088-60 (retrieved 22.10.2026)
  6. Flymo UK: robot installation (retrieved 22.10.2026)
  7. Consumer Rights Act 2015 (retrieved 22.10.2026)
  8. Core Service: Yard Force boundary wire and charging station (retrieved 22.10.2026)