The color code for a hot wire varies depending on the country and wiring system. Here are some common color codes:

North America (US and Canada):

* Black - Hot wire

* Red - Hot wire (often used for a second hot wire in 240-volt circuits)

* Blue - Neutral wire (often white or gray in older wiring)

* Green or bare copper - Ground wire

Europe and other regions:

* Brown - Hot wire

* Blue - Neutral wire

* Yellow/Green - Ground wire

Important Note:

* It's always crucial to check the specific wiring codes for your location before working with any electrical system.

* Never assume the color code based on general knowledge. Always double-check with a qualified electrician.

* Working with electrical wiring can be dangerous. If you're not confident in your skills, consult a professional electrician.