How Lighting Circuits Were Wired - Old Cable Colours Explained

[@johnstancliff7328]

In N. America, Red/Blk are considered both HOT (line) colors as well as for DC automotive circuits...

[@user-nz9sx6sf8i]

Thanks

[@NJBeltCimmerian89]

What was the reason behind the change in colours?

[@TCJB33]

We joined the EU.

[@iadair6780]

Why was middle phase changed from white to yellow in the 1960's?

[@shanebyrne6404]

Sleeving is a big no no use the correct colour insulation

[@northeastcorals]

The video title is: "How Lighting Circuits Were Wired"
NOT: "How Lighting Circuits ARE Wired"
It's purpose is to show learners what to expect when looking at old installations, not an instruction on what they should be installing.