Electricity - voltage

It is the current that kills, but the voltage of the supply that causes the current to flow.

Batteries operate at low voltages and do not have the potential for electrocution.

So called 110V systems are often used for work equipment (yellow plugs). They are a 110V alternating current (AC) current with centre tapped earth. No electrocutions have been known with this arrangement.

Standard UK mains is 230V AC. This can cause fatal electrocution.

Industrial facilities may have significantly higher voltage supplies and users, and so require particular care and control.