Mike Dolt Enterprises
Mike Dolt Enterprises
User: Zmax25, Location: Colorado
Asked on: Wednesday, February 5, 2025 at 12:57 pm EST
Answered on: Thursday, March 6, 2025 at 8:17 am EST
Question: What is everyone’s interpretation on 240.24(D)?Here is the code verbatim:Not in vicinity of easily ignitable material. Overcurrent devices shall not be located in the vicinity of easily ignitable material, such as in clothes closets.I’m in the beginning stages of wiring a 17k sq/ft mansion. Being the type of house it is the panels need to be fairly hidden, not in hallways or bedrooms where they will be seen all the time. I thought I had the perfect spot to hide them in, a closet off of one of the laundry rooms. The closet is approximately 80 sq/ft. The plans show hanging racks on one side, I wanted to put my panels on the opposite wall which is 6’ away. Now I’m being told I can’t because of this code and that being a closet. The NEC does not define vicinity, but we all know it goes into working space about panels. In my mind as long as the working space is maintained that should be considered not in the vicinity and therefore should be able to put a panel in there. Obviously I would never put a panel in a standard clothes closet with bifold doors. But are you really gonna tell me that I couldn’t put one in this closet, or even better yet the master closet that is probably 500sq ft alone just because there are some clothes in there? Furthermore I don’t believe this code is saying you can’t put a panel in a closet, the way it is worded a clothes closet to me seems like an example. There are easily ignitable materials all around a house, garages especially, but no one has ever told you you can’t put a panel in a garage have they?
You've hit a common point of contention and interpretation with 240.24(D). Here's a breakdown of how people generally interpret it and how it applies to your situation
Key Points of the Code (240.24(D))
Core Principle
Overcurrent devices (panels) must not be located near easily ignitable materials.
Example, Not Limitation
The code explicitly states "such as in clothes closets." This is an example of a hazardous location, not the only hazardous location. The code is not saying you can't put a panel in any closet. The "such as" wording is key.
"Vicinity" is Undefined
This is the crux of the issue. The NEC intentionally leaves "vicinity" open to interpretation by the local inspector (Authority Having Jurisdiction, or AHJ) based on specific circumstances.
Understanding the Interpretation Issues Literal vs. Intended Meaning
Some people take the code literally and assume any closet with clothing is automatically off-limits. This is overly restrictive. The intent is to prevent panels from being installed in locations where a fire hazard is significantly increased.
AHJ Discretion
The AHJ has the final say. What one inspector allows, another might not. This is why you need to discuss the specific installation with them.
Working Space and Safety
Ensuring the required working space (110.26) is crucial. If the working space around the panel is clear of easily ignitable materials, you have a stronger argument.
Applying This to Your Situation
Here's how you can argue for your proposed location:1. Size and Layout of the Closet
80 sq/ft Laundry Closet
This is not a typical small clothes closet. It's more akin to a small room used for storage.
6' Separation
The 6' separation between the panels and the hanging racks is a significant buffer. This demonstrates you are considering safety.
Master Closet (500 sq/ft example)
Your argument about a large master closet is valid. If the panel is installed with proper clearance and away from clothing storage, it would be unreasonable to deny the installation solely based on the presence of clothing in the entire closet.2.
"Easily Ignitable Materials"
Definition
"Easily ignitable" is not explicitly defined, but think of materials that ignite quickly and burn rapidly (loose paper, flammable liquids, very dry textiles). Modern clothing is often treated to be less flammable than in the past.
Mitigation
You can argue that the types of clothing stored (e.g., neatly hung, not piled on the floor) and the overall cleanliness of the closet reduce the fire risk.3.
Working Space and Clearances
Compliance with 110.26
Ensure you meticulously meet the working space requirements around the panels (depth, width, and height). No storage is allowed in this dedicated space.
Physical Barriers
If possible, consider installing a physical barrier (e.g., a stud wall and a door) to further separate the panel area from the clothing storage.4.
Code Intent
Garage Analogy
Your garage analogy is excellent. Garages often contain flammable materials (gasoline, chemicals), yet panels are routinely installed there. The key is managing the risks through proper installation and clearances.
Recommended Actions1. Consult with the AHJ
This is essential. Schedule a meeting to discuss your plans before starting the electrical work. Present your arguments clearly and show them the specific layout of the closet. Be prepared to compromise.2.
Detailed Drawings
Provide detailed drawings showing the panel location, dimensions of the closet, placement of storage, and clearances to combustible materials.3.
Consider Alternatives (If Necessary)
Be prepared to suggest alternative locations if the AHJ is unwilling to approve your preferred spot. This demonstrates your willingness to comply with the code.4.
Documentation
Document all communication with the AHJ, including meeting dates, participants, and agreed-upon solutions.
In conclusion:240.24(D) is not an absolute prohibition against panels in any closet. It's a precaution against placing panels in locations with a high risk of fire due to easily ignitable materials. By demonstrating that the specific closet layout and installation mitigate the fire risk, and by securing approval from the AHJ, you can likely proceed with your plan. Always prioritize safety and code compliance. Flag for review