Topaz Lighting 731 Clamp-On Al...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3.01
Topaz Lighting 731 Clamp-On Aluminum Service Entrance Cap

Topaz Lighting 731 Clamp-On Aluminum Service Entrance Cap

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Model: 734

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

$3.01
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Topaz Lighting 731 Clamp-On Aluminum Service Entrance Cap

The Topaz Lighting 731 Clamp-On Aluminum Service Entrance Cap, also known as a weatherhead, is engineered to terminate service entrance conduit while keeping out rain, snow, and debris at the point where overhead or riser conductors enter a building's electrical system. Built from lightweight, corrosion-resistant aluminum, this cap is designed for durability in exposed outdoor installations and is available in sizes from 1/2" through 4" to fit a range of service entrance conduit runs. The clamp-on design allows for straightforward attachment to rigid or IMC conduit runs without the need for threading, simplifying service entrance terminations for electricians working on residential, commercial, and industrial projects.

Key Features

  • Trade Size: Available in sizes from 1/2" through 4", including 1", 1-1/4", 1-1/2", 2-1/2", and 3/4" options to match standard service entrance conduit runs.
  • Durable Construction: Lightweight aluminum body resists corrosion and rust, supporting long-term reliability in outdoor and exposed service entrance applications.
  • Clamp-On Attachment: Simplifies installation onto rigid or IMC conduit runs, reducing labor time compared to threaded alternatives.
  • Weatherproof Function: Designed to direct water away from the conduit opening, helping protect conductors from moisture intrusion at the service entrance point.
  • Lightweight Aluminum Body: Eases handling and installation on ladders, lifts, or elevated service masts.
  • Electrical Conduit Compatibility: Suited for use with standard rigid and IMC conduit and raceway systems as part of a complete service entrance assembly.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Overhead Service Entrance Conduit Terminations
  • Residential and Commercial Electrical Service Masts
  • Conduit and Raceway Systems
  • Outdoor and Wet-Location Installations
  • New Construction and Service Upgrade Projects

Why Topaz Lighting?

Topaz Lighting builds its aluminum service entrance cap to hold up to the constant outdoor exposure that service entrance components face, from sun and rain to temperature swings. The clamp-on aluminum construction gives electrical contractors a durable, easy-to-install option for weatherproofing conduit terminations across the full 1/2" through 4" size range on service entrance and raceway systems. Choosing Topaz Lighting for this application supports dependable, code-conscious installations for both new construction and upgrade work.

Product Specs

Department:
Electrical
Product Group:
Conduit & Raceway
Product Subgroup:
Conduit Straps & Supports
Product Type:
Service Entrance Cap
Connection Type:
Clamp-On
Product Material:
Aluminum
Product Size:
1/2" - 4"

Topaz Lighting 734 – Frequently Asked Questions

1) What conduit sizes does the Topaz 731 service entrance cap come in?
The Topaz clamp-on aluminum weatherhead runs 1/2 inch through 4 inch trade size. Orderable sizes are 1/2 in (731), 3/4 in (732), 1 in (733), 1-1/4 in (734), 1-1/2 in (735), 2-1/2 in (737) and 4 in (740). Match the cap to the trade size of the mast or riser conduit it terminates, not to the conductor size.
2) Do I have to thread the conduit to install this weatherhead?
No. It's a clamp-on cap, so it attaches over the end of a rigid or IMC run without threading the pipe. That's the practical difference from a threaded weatherhead, which has to land on cut and threaded conduit ends.
3) Will a clamp-on aluminum entrance cap hold up outdoors on a service mast?
Aluminum body, so it resists corrosion and rust in exposed outdoor and wet-location service entrance work. It's also light, which matters when you're setting it at the top of a mast off a ladder or a lift.
4) Can I use this cap on EMT?
The stated conduit types are rigid and IMC. EMT isn't named, so for an EMT run confirm a cap rated for that raceway rather than assuming this one clamps correctly.
5) Which Topaz part number do I order for a 1-1/4 inch service mast?
Part 734 is the 1-1/4 inch clamp-on aluminum entrance cap. The numbering climbs with trade size: 733 is 1 inch, 734 is 1-1/4, 735 is 1-1/2. Order by the number that matches your conduit.
6) What does a service entrance cap actually do on an overhead service?
It terminates the top of the service entrance conduit and keeps rain, snow and debris out where the overhead or riser conductors enter the raceway. The cap directs water away from the conduit opening so moisture doesn't run down onto the conductors. Electricians call it a weatherhead.
7) Is this cap suitable for a commercial service upgrade, not just a house?
Yes. The size range goes to 4 inch, which covers commercial and industrial riser and mast work as well as residential service upgrades and new construction. Sizing is the only thing that changes between those jobs.
How fast can I get the Topaz Lighting 734 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 Topaz Lighting 734 come with a warranty?
Absolutely. The Topaz Lighting 734 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 Topaz Lighting 734?
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 Topaz Lighting 734 from ZenSupply?
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