Editor’s note: Charlie Trout is moving on to retirement. This edition of Code FAQs will be the last collection of questions and answers he will provide. For the next few months, tune in for a “best of” series of Code Questions of the Day by Charlie. A new writer will be introduced in January.
transformer secondary conductor rules are similar to tap conductor rules. Article 240.21 of the National Electrical Code (NEC) covers the location and sizing requirements of overcurrent protection for tap conductors and transformer secondary conductors.