Bridgeport Fittings 388-DC40 3...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$32.86
Bridgeport Fittings 388-DC40 3" Insulated Grounding Bushing, Zinc Die-Cast with Lug

Bridgeport Fittings 388-DC40 3" Insulated Grounding Bushing, Zinc Die-Cast with Lug

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Model: 388-DC40

In Stock (leaves warehouse same day if ordered before 3pm ET)

$32.86
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Bridgeport Fittings 388-DC40 3" Insulated Grounding Bushing, Zinc Die-Cast with Lug

The Bridgeport Fittings 388-DC40 is a 3" insulated grounding bushing built from rugged zinc die-cast material and equipped with an integral grounding lug. It is engineered to terminate rigid and intermediate metal conduit (IMC) runs while protecting conductor insulation from abrasion at the point where wiring exits the raceway. The insulated throat shields conductors from sharp conduit edges, and the zinc die-cast lug provides a dependable termination point for the equipment grounding conductor, helping electricians maintain continuous, reliable bonding throughout the raceway system. This 3" size fits standard rigid and IMC conduit terminations commonly specified on commercial and industrial electrical projects where dependable grounding continuity is essential to a safe, functioning system.

Key Features

  • Trade Size: 3" sized to match standard rigid and IMC conduit terminations.
  • Durable Construction: Zinc die-cast body resists the wear and stress of everyday conduit installations.
  • Insulated Throat: Integral insulation protects conductor jacketing from abrasion as wires pass through the conduit end.
  • Integral Grounding Lug: Built-in lug offers a secure attachment point for the equipment grounding conductor, simplifying bonding connections.
  • Bushing Configuration: Designed as an insulated grounding bushing for threaded rigid and IMC conduit applications.
  • Zinc Die-Cast Material: Provides the mechanical strength needed for demanding commercial and industrial raceway systems.
  • Grounding Continuity: The combination of insulated throat and lug supports a dependable equipment grounding path at the conduit termination.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Rigid and IMC Conduit Terminations
  • Equipment Grounding and Bonding
  • Commercial and Industrial Electrical Installations
  • Panelboard and Enclosure Conduit Entries
  • New Construction and Retrofit Wiring Projects

Why Bridgeport Fittings?

Bridgeport Fittings manufactures the 388-DC40 grounding bushing from rugged zinc die-cast material to stand up to the demands of professional electrical installations. The integrated grounding lug and insulated throat combine to deliver a dependable solution for electricians who need secure grounding continuity at conduit terminations. Choose Bridgeport Fittings for conduit fittings built for long-term, reliable performance in commercial and industrial raceway systems, where a properly bonded and insulated conduit termination is a critical part of a safe electrical installation.

Manufacturer Resources

Product Specs

list_batch:
BPF-20260918
Product Type:
Grounding Bushing
Configuration:
With Lug
Department:
Electrical
Product Subgroup:
Grounding & Bonding
Product Material:
Zinc Die-Cast
Product Size:
3"
Product Group:
Grounding & Bonding

Bridgeport Fittings 388-DC40 – Frequently Asked Questions

1) Will the Bridgeport 388-DC40 grounding bushing thread onto 3 inch rigid conduit and IMC?
Yes. The 388-DC40 is a 3 inch trade size insulated grounding bushing made to terminate threaded rigid metal conduit and intermediate metal conduit (IMC). Both rigid and IMC use the same trade size threads, so a 3 inch bushing threads onto either one. It will not work on EMT, which is not threaded.
2) Does the 388-DC40 include a grounding lug, or do I have to add one?
The lug is built in. The 388-DC40 is the "with lug" configuration, so the equipment grounding conductor lands directly on the bushing with no separate lug kit to buy. That is the difference between this and a plain insulated bushing, which only protects the conductors and gives you nowhere to bond.
3) Do I need an insulated grounding bushing or just a plastic insulating bushing at a panel entry?
Two different jobs. A plain insulating bushing only keeps the conductor jacket off the sharp conduit end. The 388-DC40 does that with its insulated throat and adds an integral lug so you can run a bonding jumper from the conduit to the enclosure ground bar. If the raceway needs a bonding jumper at that entry, use the lug version; if the conduit is already bonded by threaded connection and you only need throat protection, the plain bushing is enough.
4) Is the 388-DC40 metal or plastic? Will it hold up in an industrial raceway?
The body is zinc die-cast, not plastic, with the insulation only at the throat where conductors pass. That gives it the mechanical strength for commercial and industrial conduit work and a solid metallic path from the conduit to the lug.
5) What is the Bridgeport part number for the 3 inch insulated grounding bushing with lug?
Order Bridgeport Fittings 388-DC40. That is the 3 inch size in the insulated grounding bushing line, zinc die-cast, lug included.
6) Where does a grounding bushing like this actually get used on a job?
Typical spots are panelboard and enclosure conduit entries where a 3 inch rigid or IMC run lands and the equipment grounding conductor has to be bonded to the raceway. It is used on new construction and on retrofit work, and it does double duty by protecting the conductors at the point they leave the conduit.
How fast can I get the Bridgeport Fittings 388-DC40 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bridgeport Fittings 388-DC40 come with a warranty?
Absolutely. The Bridgeport Fittings 388-DC40 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bridgeport Fittings 388-DC40?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Bridgeport Fittings 388-DC40 from ZenSupply?
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