National Electrical Installation Standards

Standards as High as Your Own

Thursday, November 17, 2022


Dear CQD, I know that a Fire Pump can be supplied by a dedicated service. Is there any circumstances where the Code would allow for a Fire Pump to be supplied by a feeder supplied from the buildings electrical service? Regards, Allen Weinholz


Hi Allen, in general this would not be permitted, and the fire pump would need to be supplied by a tap ahead of the service disconnect, or the fire pump would require its own independent service. However, Section 695.3(C) has 2 power supply methods for fire pumps in Multibuilding Campus Style Complexes, both of which permit the use of feeders. This installation method is permitted if the methods listed in 695.3(A) are not practical, the AHJ approves of the installation, and all over current protective devices are selectively coordinated with the supply-side overcurrent protective devices.

Section 695.3(C)(1) allows for the fire pump to be supplied by two or more feeders, if said feeders are connected to, or derived from two separate utility services.

Section 695.3(C)(2) allows for a fire pump to be supplied by a feeder, and an alternate source of power, like an on-site standby generator.

ABOUT CQD: The Code Question of the Day (CQD) is NECA and ELECTRICAL CONTRACTOR Magazine’s flagship National Electrical Code (NEC®) public forum for the industry, sponsored by EATON. The daily distribution of Q&A generates a lively dialogue and shares relative Code-based practical responses.

SUBMIT YOUR CODE QUESTION: Click here to submit a question to for inclusion in an upcoming edition of the Code Question of the Day, or email

CHARLIE TROUT: Charles M. Trout, better known as Charlie, was a nationally known NEC® expert and author. He served on several NEC® technical committees and is past chairman of CMP-12. In 2006 Charlie was awarded the prestigious Coggeshall Award for outstanding contributions to the electrical contracting industry, codes and standards development, and technical training. Even though Charlie passed away in October of 2015, his work continues in spirit. NECA continues to maintain this question forum for its many subscribers in memory and recognition of all his significant contributions to making the NEC what it is today.

NECA STANDARDS: NECA publishes the National Electrical Installation Standards™ (NEIS™), a series of ANSI-approved performance and quality standards for electrical construction. NEIS can be purchased in the NECA Store in three formats: a printed or  PDF download of a standard or, as an  annual subscription service.

NECA SAFETY PRODUCTS & PUBLICATIONS: NECA produces electrical safety publications and products for the industry including jobsite safety guides, handbooks and resource kits. View a full listing of available resources and products »

IMPORTANT NOTICE: Unless the question requests a response based on a specific edition, all answers are based on the latest edition of NFPA 70® National Electrical Code®.

This correspondence is not a formal interpretation of the NEC® and any responses expressed to the questions are opinions and do not necessarily represent the official position of NECA, NFPA, the NEC Correlating Committee any Code-making panel or other electrical technical committee. In addition, this correspondence is neither intended, nor should it be relied upon, to provide professional consultation or services. 

UPDATE YOUR SUBSCRIPTION PREFERENCES: Subscribe or Unsubscribe from this list.