Description
The Comet Single Compression Brass Cable Gland 82mm (3-1/4”) is designed to provide a secure and reliable cable-entry arrangement for compatible electrical and industrial installations. Cable glands are installed where cables enter electrical panels, junction boxes, control cabinets, machinery, and other enclosures. Their purpose includes securing the cable, providing mechanical retention and strain relief, and creating a suitable sealing interface around the cable entry.
This Comet model features a brass body and single-compression construction, providing a robust metallic solution for appropriate cable-entry applications. Brass is widely used for industrial cable glands where mechanical strength and durable metallic construction are required.
It is important to understand that 82mm (3-1/4”) is a nominal product designation and should not automatically be interpreted as the cable diameter the gland accepts. The correct gland must be selected according to the manufacturer’s specified cable clamping range and the actual outside diameter (OD) of the cable. The enclosure mounting thread is a separate specification and must also be checked. Cable-gland selection guides consistently identify cable OD and clamping range as critical selection parameters.
For a broader technical overview, customers can read Thunderbolt Electromech India Pvt. Ltd.’s Cable Gland Supplier India , which covers cable-gland sizing, construction, threads, IP ratings, compression types, and project selection.
Key Features
- Brand: Comet
- Product Type: Single Compression Brass Cable Gland
- Nominal Size: 82mm (3-1/4”)
- Material: Brass
- Designed for compatible cable-entry applications
- Provides mechanical cable retention and strain relief
- Suitable for appropriate electrical and industrial installations
- Robust metallic construction
- Requires cable OD and thread verification before ordering
Understanding Cable Gland Size
One of the most important considerations when purchasing a cable gland is understanding the difference between cable conductor size, cable outer diameter, gland clamping range, and gland thread size.
Cable size expressed in sq.mm generally refers to the conductor’s cross-sectional area. It does not necessarily indicate the external diameter of the complete cable. Insulation, bedding, number of cores, armour, and outer sheath construction can all change the cable’s overall diameter.
The gland’s sealing component works around the outside of the cable. Consequently, the cable OD must fall within the manufacturer’s specified clamping range. If the cable is below the minimum range, the seal may not compress sufficiently. If it exceeds the maximum range, proper gripping and sealing may not be achieved.
For this reason, customers should obtain the cable OD from the cable manufacturer’s datasheet or measure the cable accurately before ordering the Comet 82mm (3-1/4”) Cable Gland.
Cable Gland Size vs. Thread Size
The cable clamping range and mounting thread are two different specifications.
The clamping range determines which cable diameters the gland can grip and seal. The mounting thread determines how the gland attaches to the electrical enclosure.
For example, an enclosure may require a particular Metric, PG, ET, BSP, or NPT thread while the cable itself requires a completely different dimensional consideration. Metric, PG, and NPT threads should not be treated as interchangeable.
Before ordering, confirm:
- Cable outer diameter
- Cable construction
- Gland clamping range
- Enclosure entry size
- Thread standard
- Required sealing/IP protection
- Installation environment
How to Select the Correct 82mm Cable Gland
1. Check the Cable Outer Diameter
Measure the complete cable OD at the point where the gland seal will grip the cable. A cable manufacturer’s datasheet is the preferred source when available.
2. Compare the OD With the Clamping Range
The measured cable diameter must fall within the Comet gland’s specified cable acceptance range. Do not assume that every cable associated with an “82mm” designation will be compatible.
3. Identify the Cable Construction
Determine whether the cable is armoured or unarmoured. Also consider the cable’s sheath and overall construction because these factors affect gland selection.
4. Confirm the Thread
Check the enclosure’s actual entry thread and ensure that the selected gland has the required compatible thread.
5. Consider the Environment
Indoor and outdoor installations can have different requirements. Dust, water, UV exposure, vibration, chemicals, temperature, and mechanical stress should be considered when selecting the complete cable-entry system.
6. Confirm the Required IP Protection
If the installation has an IP protection requirement, the gland, sealing components, cable diameter, enclosure interface, and installation method must all be suitable. An IP rating stated for an individual gland does not automatically guarantee the same IP rating for the completed gland-to-enclosure assembly.
For additional cable-gland selection information, explore the Cable Gland category .
Applications
The Comet Single Compression Brass Cable Gland 82mm (3-1/4”) can be considered for compatible cable-entry requirements in electrical and industrial applications, subject to the manufacturer’s specifications.
Typical applications include:
- Electrical control panels
- Power distribution panels
- Junction boxes
- Industrial control cabinets
- Electrical enclosures
- Industrial machinery
- Automation equipment
- Manufacturing facilities
- OEM equipment
- Infrastructure projects
- Electrical installation projects
- Industrial maintenance systems
- Panel-building applications
The final suitability should always be verified against cable OD, cable construction, clamping range, thread specification, environmental conditions, and project requirements.
Why Choose Thunderbolt Electromech India Pvt. Ltd. for Cable Glands?
Thunderbolt Electromech India Pvt. Ltd. supplies cable glands and related electrical products for industrial, commercial, infrastructure, OEM, panel-building, engineering, and maintenance requirements.
Selecting a cable gland correctly requires more than choosing a nominal size. Cable OD, cable construction, compression type, thread, material, environmental conditions, and sealing requirements all influence product suitability.
Thunderbolt Electromech can help customers evaluate these parameters before procurement. This can be particularly useful for:
- Electrical contractors
- Panel manufacturers
- EPC companies
- OEMs
- Project procurement teams
- Industrial maintenance departments
- Electrical engineers
- Industrial buyers
Customers can also explore the Cable Gland category for related technical articles and product-selection resources.
For a more comprehensive buying framework, visit the Cable Gland Supplier India .
Single Compression Cable Gland vs. Double Compression
A single compression cable gland is designed to grip and seal around the cable sheath through its compression arrangement. It is suitable for applications where its design, cable compatibility, and environmental requirements match.
A double compression cable gland has an additional compression arrangement and is commonly selected for applications involving armoured cables and demanding mechanical or sealing requirements.
The correct choice depends on the cable construction and application. Therefore, customers should not select a single- or double-compression gland merely according to nominal size.
Installation Guidelines
Proper installation is essential to obtain the intended performance of a cable gland.
Before installation:
- Confirm the gland specification.
- Verify the cable’s actual OD.
- Confirm the cable construction.
- Check the enclosure thread.
- Inspect the gland and sealing components.
- Ensure the cable is correctly positioned.
- Follow the manufacturer’s installation instructions.
- Tighten the gland correctly without excessive force.
- Verify adequate cable retention.
- Check the completed cable-entry arrangement for the required sealing performance.
Incorrect gland sizing, incompatible threads, damaged seals, and improper tightening can contribute to sealing or cable-retention problems.
Frequently Asked Questions
1. What cable diameter can an 82mm cable gland accommodate?
The 82mm (3-1/4”) designation alone does not establish the cable diameter range. The actual cable OD must be compared with the specific Comet gland’s manufacturer-specified clamping range. Always verify the product dimensions before ordering.
2. How do I select the correct cable gland size?
Start with the cable’s actual outside diameter, then compare it with the gland’s clamping range. Next, verify the cable construction, gland type, enclosure thread, environmental conditions, and required protection level. This approach is more reliable than selecting a gland based only on conductor size.
3. Is 82mm the same as an 82 sq.mm cable size?
No. 82mm (3-1/4”) is a dimensional gland designation, whereas sq.mm generally refers to conductor cross-sectional area. These measurements describe different characteristics and should not be confused when selecting a cable gland.
4. Does cable gland size refer to the cable diameter or the thread?
It can be confusing because cable glands have both a cable clamping range and a mounting thread. The clamping range relates to the cable’s outside diameter, while the thread relates to the enclosure entry. Both specifications must be checked independently.
5. Can I use this brass cable gland outdoors?
Outdoor suitability depends on the exact product specification, sealing arrangement, cable compatibility, environmental conditions, and required IP protection. Brass construction by itself should not be treated as proof of a particular outdoor IP rating.
6. Can a single compression gland be used with armoured cable?
The answer depends on the specific cable construction and gland design. A single-compression gland should not automatically be selected for an armoured cable. Where armour clamping and associated mechanical or electrical requirements apply, a suitable gland designed for that cable construction may be required.
7. Does an IP-rated cable gland automatically make the complete enclosure IP-rated?
No. The gland’s individual IP rating does not automatically establish the IP rating of the complete gland-to-enclosure connection. Thread compatibility, sealing methods, cable diameter, gland installation, and enclosure design can all affect the completed installation.
8. What information should I provide when ordering the Comet 82mm gland?
For accurate product selection, provide the cable outer diameter, cable construction, required gland type, enclosure/thread specification, installation environment, and required IP protection. If available, the cable manufacturer’s datasheet is also useful.
9. What happens if the cable is outside the gland’s clamping range?
If the cable is smaller than the minimum specified diameter, the seal may not compress sufficiently. If it is larger than the maximum diameter, the gland may not provide adequate gripping or sealing. Either situation can compromise cable-entry performance and potentially affect the intended protection level.
Important Ordering Note
Before purchasing the Comet Single Compression Brass Cable Gland 82mm (3-1/4”), verify the exact cable clamping range, cable OD, cable construction, thread specification, sealing requirements, and installation environment against the applicable product documentation.
The supplied URL currently contains 70mm (2-3/4”) even though this product is 82mm (3-1/4”). For the strongest SEO structure, use a dedicated 82mm product URL rather than keeping the 70mm URL.
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