Here's why:
* Wood is not an insulator: While wood can be a relatively poor conductor of electricity, it's not a perfect insulator. Electricity can still flow through it, especially if the wood is wet or damaged.
* The path of least resistance: Electricity will always choose the easiest path to flow. If you touch a live wire with wood, the electricity may choose to flow through the wood and into your body, causing electrocution.
* Voltage matters: The amount of electricity needed to cause harm depends on the voltage. Even a seemingly small amount of electricity can be dangerous if the voltage is high enough.
Always assume that any electrical wire is live and never touch it directly, regardless of what you're holding. If you need to work with electricity, consult a qualified electrician and use proper safety equipment.