Question

electrical power tools must be ____ by a 3 - wire cord, __ insulated, powered by a low - voltage transformer, or powered by a self - contained ____.

• secured...partially...circuit
• grounded...double...battery
• wrapped...triple...control panel
• intersected...fully...generator

Explanation:

Electrical power tools need to be grounded for safety (3 - wire cord often for grounding). Double - insulated tools are a common safety feature. And self - contained batteries are a valid power source for such tools.

Answer:

B. Grounded...double...battery