In today’s demanding electrical and energy industries, technicians face the challenge of performing precise measurements in increasingly tight and hazardous spaces. The right tools are critical — not only to ensure accuracy but also to maintain operator safety when working around energized equipment. E-Z-Hook’s long-handle test probes are expertly designed to address these challenges by providing extended reach, reliable connectivity and enhanced insulation, all packaged in a convenient, field-ready design.

Whether troubleshooting inside cramped control panels, verifying voltage in energized switchgear or performing diagnostics on remote transformers, these probes help keep users’ hands safely away from live parts while delivering dependable, high-quality readings. With features like a modular two-piece handle for easy transport and a fine-point probe tip for precise contact, the 63340 series is a trusted choice for professionals who demand safety and performance in every test.

Figure 1: Long handle probe test leads that have two halves 15 inches in length that when connected together form a 30 inch test probe lead for safe testing from a distance. Easily connects to multimeters with the standard right angle banana plugs. Source: EZ-Hook

Overview of the product features

The 63340 is a long-handle test probe assembly designed to provide safe, precise and convenient access to electrical measurement points — particularly in confined or high-risk environments. Built with field technicians in mind, this test lead combines a durable probe handle, fine-point tip, flexible wire and shrouded banana plug to deliver both reach and reliability.

Key features:

· 30 inch clear acrylic handle: Offers extended reach into panels, cabinets and equipment while keeping hands at a safer distance from energized parts — especially valuable in high-voltage or crowded environments common in the energy sector.

· Detachable handle design: The clear acrylic handle unscrews at the center, splitting into two 15 inch sections for easier transport and storage in tool bags or cases.

· Fine-point probe tip: The default 0.080 inch diameter stainless steel pin tip is ideal for accessing tight terminals, narrow insulation gaps and recessed connectors without damaging wiring.

· Shrouded right-angle banana plug: Compatible with standard 4 mm banana sockets, including most digital multimeters and test instruments. The shrouded design enhances safety and stability.

· 18 AWG PVC-insulated wire: Durable and flexible for field use. Wire lengths are measured from the back of the 30 inch handle to the banana plug connector.

· Available in red or black: Standard lead colors for test equipment, sold in R/B sets, which include a zippered nylon storage pouch for convenient carry and protection.

· Standard lead lengths: Offered in 36 inch, 48 inch or 60 inch wire lengths, with custom lengths available upon request to meet specific testing needs.

Custom configurations: Available with alternative connector terminations — including stacking banana plugs, sockets, pin plugs, alligator clips and more — to match the needs of various test setups and equipment. Many different color combinations and wire configurations are also available.

Unlike standard test leads, the long handle test probes are engineered specifically for situations where distance, precision and safety are critical. This is particularly useful in energy sector applications, such as: testing inside energized switchgear or transformer cabinets, probing terminals on generator-tie panels before breaker closure and measuring voltage in outdoor substations or field-deployed switchboard skids.

Figure 2: Long handle probe test leads being used to safely measure low voltage on the inlet side of a Gen-Tie breaker prior to closure. Source: EZ-Hook

The extended handle helps keep the operator’s hands outside of high-voltage zones, while the fine-tip probe allows access without disassembling wiring or disturbing existing terminations. When work is done, the two-piece handle design makes it easy to break down and store the lead without damaging the tip or wire.

Its modularity, visibility and compatibility with standard test equipment make the long handle probes a go-to solution for electricians, linemen and field service professionals who need both reach and reliability in one tool.

How electricians use the long-handle test probe

Whether working inside a crowded panel or testing live circuits, electricians rely on this long-handle test probe to get clean, reliable readings while keeping their hands safely away from energized parts. Here are some of the key ways it is used in the field:

Application in the energy industry: Safe testing in live power environments

In real-world energy applications, the 63340 long-handle test lead is regularly used to perform safe, reliable voltage measurements in environments where space is limited and equipment is energized. These leads have been used to test low voltage on the inlet side of Gen-Tie breakers prior to closure, as well as to verify voltage output on the secondary side of transformers before performing lockout procedures. Technicians also rely on the leads when testing the incoming utility feed on a switchboard skid — a portable switchboard assembly used in temporary or modular power systems. In these scenarios, the long-handle design provides the reach and insulation needed to protect workers while accessing critical test points deep within electrical enclosures.

Breaking it down:

Figure 3: Long handle probe test leads being used to safely measure low voltage on the inlet side of a Gen-Tie breaker prior to closure. Source: EZ-Hook

· Incoming utility → The electrical supply coming from the power company (grid) into a facility or equipment. This is the “service entrance” power before it’s distributed internally.

· Switchboard → A large electrical panel that receives the incoming power and distributes it to various circuits or equipment.

· Testing → Verifying that the incoming voltage, phase rotation, frequency, grounding and other parameters are correct before the switchboard is put into service. This can also include insulation resistance checks and protective relay function, and ensure breakers or disconnects operate correctly.

Why it’s done:

· To confirm the utility company is delivering power within spec.

· To ensure wiring, terminations and protective devices in the skid-mounted switchboard are correct before energizing downstream equipment.

· To catch any dangerous conditions (wrong phase rotation, overvoltage, grounding issues) before the system goes live.

Additional long-handle probes for diverse applications

While the 63340 long-handle test probe with a shrouded right-angle banana plug is ideal for many low-voltage measurement scenarios, different test environments and equipment setups may require alternative connector styles. E-Z-Hook offers a full range of compatible long-handle test leads with various plug, socket and clip terminations to suit specific applications in the electrical and energy sectors.

Additional termination types with the long handle probe include:

· stacking standard banana plug (60140)

· stacking standard pin plug (60240)

· standard banana socket (61040)

· meter banana plug (60540)

· meter pin plug (60640)

· 0.080 inch pin plug (AX640)

· unshrouded standard banana plug (BX640)

· standard insulated alligator clip (61940)

· standard unshrouded right angle banana plug (63140)

· standard shrouded right angle banana plug with wider outside diameter (63240)

· standard shrouded right angle banana socket (63440)

Engineering custom solutions for electrical and energy testing

E-Z-Hook’s long-handle test leads, including the 63340 series and its variants, are built for flexibility — not only in the field, but also in how they’re configured at the factory. For teams with unique testing requirements, E-Z-Hook offers a range of customization options to support both standard and specialized applications in electrical and energy environments.

Available custom options include:

· Custom wire lengths, gauges and insulation types to meet specific voltage, flexibility or routing needs

· Up to 10 color options for wire insulation, allowing clear circuit identification or team/tool color coding

· Probe tips available in red or black, but many other connectors for the other termination are available in all 10 colors

· Only red/black lead sets typically come with the storage bag, but bags and packaging can be customized for alternate color sets or bulk use

· Custom connector integration, including third-party connectors or alternative E-Z-Hook terminations upon request

· Swappable probe tips on long-handle leads allow users to adapt a single handle for different test points and access styles including: standard 0.080 inch replacement tip (9398), 0.080 inch tip with a 48° angled bend for tight or angled access (9399) and extended 0.080 inch tip for deeper reach into recessed terminals or enclosures (9400).

E-Z-Hook’s engineering team works directly with end users to develop tailored solutions that fit the unique demands of fieldwork, diagnostics and production testing. Whether adapting to tight test bays, color-coded team kits or non-standard connectors, these customization options ensure the test leads work exactly the way teams need them to.

Start shopping and get in touch with E-Z-Hook

Whether safely measuring voltage output on the secondary side of a transformer, testing the incoming utility on a switchboard skid or looking for custom solutions, E-Z-Hook is here to help.

· View the product webpage

· View the product specification sheet

· Contact EZ-Hook and speak to industry experts

· Website: www.e-z-hook.com

· Phone: 1-800-995-4665

About the company

Since 1956, E-Z-Hook has manufactured and sold innovative solutions for the test and measurement market. Their electronic test accessories are recognized in multiple industries around the world for their durability and innovative designs. With the ever-changing pace in technology, the E-Z-Hook team continues to commit to meet and manufacture products that satisfy the changing needs of their customers and the continually evolving marketplace. E-Z-Hook is known for its custom solutions and capabilities and it regularly dispatches its engineers to design and develop custom products or custom alterations to existing products to meet their specific testing requirements. This approach has allowed them to combine industry-specific requirements with ideas that leverage E-Z-Hook’s prior product and industry experiences.

E-Z-Hook is a third-generation family-owned and operated company in the U.S. Their products are sold worldwide through distributors and factory-direct to customers. Contact them today to discuss solutions for specific testing requirements.

E-Z-Hook is ISO 9001:2015 certified to adhere to strict quality standards.