Which of the following colors is allowed for the identification of ungrounded conductors?

The identification of ungrounded conductors is important in ensuring safety and clarity in electrical installations. According to national electrical codes and standards, ungrounded conductors can be identified by specific colors, one of which is yellow.

Yellow is commonly used to signify ungrounded phase conductors in many wiring systems. This color helps differentiate ungrounded conductors from grounded conductors, where specific colors like green or bare wire would typically indicate an equipment ground or ground wire. Brown is also a color that can be associated with ungrounded conductors, but in specific contexts depending on the regional or specific wiring standards being followed.

Using yellow as a standard color for ungrounded conductors helps ensure that all electricians and those working with electrical systems recognize the function of the wire quickly and accurately, reducing the risk of mistakes that could lead to hazardous situations. Proper identification of conductors is a key component of safe electrical practice and helps maintain compliance with electrical codes.