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Topic: Using scrap wire to tie / bundle wires

User: qqqqqqq, Location: Georgia

Asked on: Sunday, February 16, 2025 at 1:34 pm EST
Answered on: Thursday, March 6, 2025 at 8:43 am EST

Question: I have searched everywhere for this, but does the NEC address using a small piece of scrap wire to tie wires up out of the way? I am converting flourescent fixtures to LED; bypass ballast type. There are short pieces of scrap 20 gauge conductor that I could use to loosely tie the wires together, and up out of the way to make it easier to put the cover on from underneath.Also, must the old ballast be removed, or could I simply leave it in the fixture, being unused? Thanks!

Okay, let's address your questions regarding the NEC and your fluorescent to LED conversion

Regarding using scrap wire to bundle/tie wires:
NEC Doesn't Explicitly Prohibit It

The NEC doesn't have a specific rule that
directly says "you cannot use scrap wire to bundle conductors." However, that doesn't mean it's automatically okay.

Potential Issues & Code Violations



300.4(F) Protection from Physical Damage

If that scrap wire is bare, sharp, or could potentially damage the insulation of the conductors over time due to vibration or movement, it
could be considered a violation. The conductors must be protected from damage.

110.12 Neat and Workmanlike Manner

This is a broad, subjective rule, but it's important. Using random scrap pieces could be viewed as not meeting the standard of a "neat and workmanlike manner," especially if it looks sloppy or makeshift.

300.11 Securing and Supporting

This section typically deals with securing raceways and cables to the building structure, but the principle applies. Wires should be supported in a way that's reliable and doesn't put undue strain on the connections. Randomly tying them with scrap wire
might not be considered adequate support.

Material Compatibility (110.3(A))

You're less likely to have a problem with this using copper wire on copper conductors, but consider the materials involved. Corrosion could occur if dissimilar metals are in contact, especially in damp or corrosive environments.

Best Practices & Alternatives



Use Listed Cable Ties or Wire Ties

These are inexpensive, readily available, and designed for the purpose of bundling wires. They are made of non-conductive materials and have smooth edges to prevent insulation damage.

Use Existing Mounting Points

Many fixtures have existing holes or clips that you can use to secure the wires.


Keep it Minimal and Secure

If you really want to use scrap wire, make sure it's insulated, smooth, and doesn't create any sharp edges or pressure points on the conductors. Make sure it is tight enough to hold them in place, but loose enough to prevent damage.

In summary, while not directly prohibited, using scrap wire to bundle wires in a fixture is generally not recommended due to potential code violations and the availability of better, safer alternatives. Using a cable tie or other fastener is better. It's also more professional.
Regarding Leaving the Ballast in Place vs. Removing It



Code Requirements

The NEC
does not explicitly require you to remove the ballast when converting to ballast-bypass LEDs.

Best Practices & Considerations



Removing the Ballast is Generally Preferred



Energy Savings

Even a deactivated ballast still consumes a small amount of energy. Removing it eliminates this parasitic load.

Future Problems

A deactivated ballast can still fail over time, potentially creating a hazard or a nuisance (buzzing, humming, etc.).


Simplifies Wiring

Removing the ballast eliminates unnecessary wires within the fixture, making it easier to work on in the future.

Weight Reduction

Ballasts can be heavy. Removing them reduces the overall weight of the fixture.


Leaving the Ballast In Place (Acceptable, but less desirable)



Easier Installation

Leaving the ballast can
sometimes simplify the rewiring process, especially if the ballast is difficult to access. You just need to make sure the power supply is disconnected from the ballast, so it will not become energized.

Cost Savings

Potentially save time and effort, especially if you're doing a large number of fixtures.

How to Leave the Ballast In Place SAFELY


Disconnect Power

Turn off the circuit breaker.2.

Disconnect Ballast Wiring

Completely disconnect all wires going to the ballast. This includes the input (120V or 277V) wires and the output wires that used to go to the fluorescent lamps.3.

Cap/Insulate All Wires

Use wire nuts or other approved methods to insulate all the disconnected ballast wires to prevent accidental contact with live circuits.4.

Secure Wires

Secure the disconnected wires so they don't dangle or create a hazard.5.

Label (Important)

Label the fixture to indicate that the ballast is deactivated and the fixture has been converted to ballast-bypass LEDs.

In summary

While not
required* by the NEC, removing the ballast is the preferred and generally recommended practice. If you choose to leave it in place, ensure it is completely disconnected, the wires are properly insulated, and the fixture is clearly labeled.

Disclaimer:
I am an AI Chatbot and not a qualified electrician. This information is for general guidance only and should not be considered a substitute for professional advice from a licensed electrician. Always consult with a qualified electrician for any electrical work to ensure safety and compliance with local codes. Flag for review

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