- Battery-powered tools are the safest option.
- The severity of any electric shock will be much lower.
- There are no trailing cables.
- A lot of sites now provide secure battery charging lockers.
110 volt – yellow
- Electrical tools should ideally be a maximum of 110 volt or battery operated on construction sites.
- The standard colour code for 110 volt equipment is yellow.
- You would feel an electric shock from faulty 110 volt equipment but no lasting damage should be done.
230 volt – blue
- Domestic voltage or mains power is 230 volts.
- It is commonly used for generators and electrical distribution.
- The standard colour for 230 volt outdoor use is blue.
- If a 230 volt cable is damaged, or if you touch the wires that make up the cable, you will get a severe or even fatal electric shock.
- 230 volt tools are not allowed on most sites.
400 volt – red
- The standard colour for 400 volt is red.
- It is for equipment needing a lot of power (such as a tower crane).
Electricity can kill. If in doubt, stop work and report any concerns to your supervisor.