Class 3 Circuit Protection

Since Class 3 control circuits permit higher allowable levels of voltage and current than Class 2 control circuits, additional _____ are specified to provide protection against the electric shock hazard.

a) circuits
b) safeguards
c) conditions
d) requirements

See answer and applicable Code reference

The correct answer is: b) safeguards

Article 725 covers remote-control, signaling, and power-limited circuits that are not an integral part of a device or appliance. As noted in the definitions section of this Article,  since Class 3 circuits allow higher levels of voltage and current than a Class 2 circuit, additional safeguards are specified to provide protection from an electric shock hazard that could be encountered.

 

Hide comments

Comments

  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Publish