Have never heard of aluminium coated copper. More likely IMHO to be tinned copper. Is the red and black insulation plastic or rubber ? Tinned copper wire was used with rubber insulation to prevent chemical reaction between rubber and copper.
Have never heard of aluminium coated copper. More likely IMHO to be tinned copper. Is the red and black insulation plastic or rubber ? Tinned copper wire was used with rubber insulation to prevent chemical reaction between rubber and copper.
tbh I was repeating what an electrician elsewhere thought it was (I could've posted a link to it but did that once before and it got removed without explanation). It's PVC/PVC cable. The main interest is that the cable is still in service with adequate readings but the sheath is blue, so wondered if there is any reason for it, such as an early version of low smoke.
The railway industry seems to favour, and may require, the use of blue sheathed cables for mains voltage emergency lighting. This may be observed at Waterloo station as an example. Most of the high bay lights over the concourse have a single white cable.
Some have two cables, one white and one blue. The white cables supply the normally used HID lamps and the blue cables supply a 150 watt mains voltage halogen lamp from a generator.
