How to See Whether the Transformer Is Copper or Aluminum?

How to determine whether the transformer is copper core or aluminum core?There are many small ways to distinguish between copper and aluminium transformers on the internet, but most of the ways to distinguish between copper and aluminium core transformers are not reliable, not can absolutely distinguish between their materials.

Therefore, we have listed four ways to teach you how to identify whether a transformer is made of copper or aluminium.

Distinguished by colour
Copper is yellow and aluminium is white. You can make a small cut in an object with a knife and see the colour inside - if it is white, it is aluminium, if it is yellow, it is copper.

Check the labelling
 Some transformers may have markings or labels indicating the materials used. Check if the label says ‘Cu’ for copper or ‘Al’ for aluminium.

Weighing the item
If the transformer is made of copper, the weight will be heavier, while an aluminium transformer will be lighter.

Look at the dimensions
Aluminium-coiled transformers should be thinner, while copper-coiled transformers should be thicker.