You will need to unplug your tools:

a. When changing accessories such as blades, bits, and cutters

b. After servicing or cleaning

c. Intermittently during use

d. When someone is talking to you

You will need to unplug your tools "when changing accessories such as blades, bits, and cutters".

Hand tools are devices that are controlled physically. Hand devices incorporate anything from axes to torques. The hazards postured by hand apparatuses result from abuse and ill-advised support. Unplug or disconnect tools when not utilizing them, before overhauling and cleaning them, and while changing accessories, for example, sharp edges, bits, and cutters.