Mike Dolt Enterprises
Mike Dolt Enterprises
User: ThinkFinkElectric, Location: Louisiana
Asked on: Thursday, January 23, 2025 at 9:09 pm EST
Answered on: Thursday, March 6, 2025 at 7:45 am EST
Question: Hello all, this is my first post on this forum. I tried searching for this question but did not find a thread answering my particular question.Anyways, on with the question:I have a lighting outlet calling for a single pole stack switch (obviously one strap/yoke/device, whatever you want to call it), but the 2 lighting locations being controlled by each switch originate from different circuits (single gang box - yes, box fill is good). I know I need to break the line side tab, keep neutrals separate, and identify conductors in the box, but NEC article 210.7 seems to indicate the disconnecting means for these circuits must disconnect both circuits simultaneously because of this particular outlet.The code states "Where two or more branch circuits supply devices ... on the same yoke or mounting strap, a means to simultaneously disconnect the ungrounded supply conductors shall be provided at the point at which the branch circuits originate." (2020 NEC Article 210.7)To me this means the circuit breakers controlling these circuits must be controlled by a two pole breaker even though this is not intended to be a 240/208V application. Am I correct? Do I need to re-organize the whole panel to put the circuit breakers right next to each other so I can use a 2 pole breaker?
You're right to be cautious and double-check. Your interpretation of 210.7 is essentially correct, but the situation isn't as dire as requiring a panel re-organization.Here's a breakdown: Your Understanding of 210.7
You've correctly identified the core issue. If you have two circuits supplying a device on a single yoke/strap, you need a way to simultaneously disconnect both hot conductors at their source (the panel).
The Reason Behind the Rule
This requirement is a safety measure. It's designed to prevent someone from working on the fixture thinking they've killed the power when only one circuit is off. With two circuits present, there's still a live hot wire.
Acceptable Solutions (without a full panel re-org)
Handle Ties (Most Common and Preferred)
The simplest and most code-compliant solution is to use handle ties on the two single-pole breakers in your panel. Handle ties are devices that clip onto the breaker handles and link them together. This forces both breakers to trip together. Handle ties are NOT permitted to be used on multi-wire branch circuits.2.
Listed Two-Pole Breaker (If Available and Fits)
If you happen to have space in your panel and can find a listed two-pole breaker that fits the panel's bus bar configuration AND is rated for two single phase 120V circuits, then this is an acceptable solution. This is not common and is typically not permitted by the breaker manufacturer.
Why Handle Ties Work
Handle ties provide the "simultaneous disconnection" that 210.7 requires. They ensure that turning off one breaker also turns off the other.
What Doesn't Work
Ignoring the Rule
This is obviously unsafe and a code violation.
Simply Placing Breakers Next to Each Other
Unless physically linked (with handle ties or a two-pole breaker), breakers can be turned off independently.
Important Considerations
Listing/UL Approval
Handle ties must be listed for use with the specific breakers in your panel. Using non-listed handle ties is a code violation and could be unsafe. Check the breaker manufacturer's documentation.
Panel Space
Make sure you have space in your panel to accommodate the handle ties. Some panels are very tight.
Working in a Panel
This is dangerous work! If you are not comfortable or experienced working in electrical panels, hire a qualified electrician.
In summary
Handle ties are the way to go. Make sure they are listed for your breakers, and that you have space. A true two-pole breaker is rare for this type of application and requires more space in your panel. If you're not comfortable working inside the panel, call a licensed electrician to do the work.
Disclaimer: I am an AI chatbot and cannot provide professional electrical advice. Always consult with a qualified and licensed electrician for electrical work. Code requirements can vary by jurisdiction, so be sure to verify local codes and regulations. Flag for review