In contrast with tinned copper or plated copper wire, below we see both a solid single strand and a multi-strand aluminum wire connected to circuit breakers. In modern applications tinned copper wire is used where extra corrosion resistance is needed such as in marine applications or "boat wiring". Our photo with the red and blue arrows, adapted from a contemporary tinned-copper electrical wire advertisement we can see the reddish copper color of the wire beneath its plating in two locations: at tool marks and scrapes on the wire surface and at the cut-end of the wire. Our page top photograph illustrates rubber and fabric-insulated copper wire that may have a dull silver color on the actual wire surface. Here we describe observations that prevent confusing tinned copper wire or plated copper wire (safe in buildings) with solid single-conductor aluminum branch circuit wiring in buildings (unsafe). The sulphur content in rubber insulation on wires interacted with the surface of the copper wire, damaging the conductors.Ī thin coating of tin on the surface of the copper conductor was applied to both solid conductors and multi-strand conductors to protect the copper conductor from damage. Tinned copper conductors in electrical wiring was introduced to combat oxidation and damage to copper conductors when they were insulated using a rubber sheath - a condition noted in the U.S. Avoid confusing copper-clad wire with tinned-copper plated wire or with COALR or CU-AL Devices We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. This article includes illustrations of tinned copper solid conductor wire and tinned multi-strand copper wire are compared with copper wire to which solder was later applied. Modern tinned copper wire is also known as "busbar wire".
Tinned copper wire should not be mistaken for aluminum electrical wire in buildings. This article describes methods for accurate identification of tinned-copper or "plated copper" electrical wiring and its safe use in buildings. Tinned-copper Electrical Wiring identification, safety, production methods. We have no relationship with advertisers, products, or services discussed at this website. InspectAPedia tolerates no conflicts of interest.
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