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Conduit Bushings

Conduit bushings protect wires and cables as they pass through the ends of conduits, preventing damage from sharp edges and a smooth transition. They can be made of plastic, nylon, or metal and are available in various sizes to fit EMT, IMC, or rigid conduit. Some models include insulating liners or grounding features to meet specific code requirements. Conduit bushings are commonly used in junction boxes, enclosures, and terminations.

Since 2005, LiveWire Electrical Supply has been providing quality parts and fast shipping for in-stock products—including hard-to-find conduit accessories. Need help finding products? For 24/7 sales assistance, call 1-650-692-0700.

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Frequently Asked Questions

LiveWire Electrical Supply is your trusted source for hard-to-find electrical supplies, offering a wide selection of circuit breakers, fuses, safety switches, and industrial control products—all ready to ship the same day. With real-time stock and price checks, you can easily find what you need at competitive prices, whether for residential, commercial, or industrial projects. Our experts are available to assist with part identification and technical support, while our expedited shipping options and free UPS Ground shipping on qualifying orders ensure fast delivery. For 24/7 assistance and personalized support, call 1-650-692-0700.

Do you need a bushing on PVC conduit?

Bushings are typically required on PVC conduit. While PVC conduit does not have sharp edges like metal conduit, the NEC often mandates bushings or other protective fittings to ensure wire insulation is not damaged during pulling or operation. Some PVC conduit fittings come with built-in smooth edges or integral bushings, which may meet the code requirement. Always consult NEC Section 352 and local regulations to determine if a separate bushing is required for your specific installation.

Are bushings required on EMT conduit?

Bushings are required on EMT conduit in certain situations. Specifically, NEC Section 344.46 states that bushings must be used on EMT where conductors 4 AWG or larger are present to protect against abrasion at the ends of the conduit. For smaller conductors, EMT connectors with built-in smooth edges or integral bushings may meet the requirement. Bushings are particularly necessary at terminations or points where cables are pulled, ensuring the insulation of conductors is not damaged.

Which of the conduits are required to have bushings per the NEC?

For EMT, bushings are required when conductors 4 AWG or larger are installed, as specified in NEC 344.46 and 300.4(F), to prevent damage at the conduit ends. Similarly, RMC and IMC must have bushings in these cases, and grounding bushings may also be needed for bonding. For PVC conduit, NEC 352.46 mandates bushings at terminations to protect conductors, even though PVC lacks sharp edges. Flexible metal conduit (FMC) typically does not require separate bushings, but its fittings must provide equivalent protection. Additionally, connectors or fittings with integral bushings are often used in other conduit systems to meet code requirements. NEC 300.4(F) further emphasizes that protection is required wherever conductors enter enclosures, fittings, or conduit ends, ensuring the safety and integrity of the installation.

What is the NEC rule for the installation of bushings on rigid metal conduit?

The NEC rule for the installation of bushings on rigid metal conduit (RMC) is outlined in NEC 344.46, which mandates that bushings must be installed where conductors 4 AWG or larger enter or exit the conduit to protect the conductor insulation from damage due to sharp edges. Additionally, if the conduit system requires grounding or bonding, grounding bushings may be required, as specified in NEC 250.96 and 250.102. These bushings often include a grounding lug to ensure electrical continuity. The bushings must be listed and appropriately sized for the conduit and conductor being used, and they must comply with the manufacturer’s specifications and code requirements to ensure proper protection and safety.

What size conductor requires a bushing?
The NEC requires a bushing to protect conductors 4 AWG or larger when they enter or exit conduit to prevent damage to their insulation. This requirement is specifically outlined in NEC 300.4(F) and 344.46 for rigid metal conduit (RMC), intermediate metal conduit (IMC), and electrical metallic tubing (EMT). The rule applies to all conduit types where conductors of this size are installed, unless the conduit or fitting used provides equivalent protection through smooth edges or integral bushings.

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You may return items within 30 days of delivery for a refund. Please view our return policy here.

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We strive to ship out your items within one business day. The shipping process may take up to 5 business days on some occasions. Feel free to contact us if your order is time sensitive. Call 1-650-692-0700 or email sales@livewiresupply.com for help.

Limited Warranty

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LiveWire certifies that every product shipped out of stock, by manufacturers and by fulfillment partners will be free of functional defects for one (1) year. If any part is found with functional defects during the warranty period, LiveWire will send out a replacement item for free. Warranty items must be returned to LiveWire for inspection and must be postmarked within the warranty period.

Contact our support team by emailing support@livewiresupply.com or calling 1-650-692-0700 during normal business hours for help with your warranty claim.

Disclaimer: Livewire Electrical Supply is not affiliated with, authorized by, or acting as a representative for the brands showcased on our platform. Please be aware that products sold by Livewire Electrical Supply do not include the original manufacturer’s warranty. All trademarks, brand names, and logos featured on this website belong to their respective owners. It’s important to note that this website is not endorsed, sanctioned, or approved by any of the manufacturers or trademark holders mentioned.

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