Choosing the right cable gland size chart is a critical step in any electrical installation project. A cable gland serves as a secure entry and termination point where the cable connects to electrical equipment, providing proper sealing, strain relief, and mechanical protection. Selecting an incorrect gland size may result in loose connections, moisture entry, equipment damage, or serious electrical risks.
This comprehensive guide explains everything about cable gland size selection and reference charts, including:
Standard cable gland size chart in mm
Complete armoured cable gland size chart and unarmoured cable gland size chart
Detailed reference for double compression cable gland size chart
Special application guide for 3.5 core 300 sq mm cable gland size
Easy access to downloadable electrical cable gland size chart PDF
Whether you are dealing with single compression, double compression, armoured, or unarmoured cable types, this article will help you understand the correct cable gland type and choose the appropriate size with confidence for your installation requirements.
Cable Gland Size
The term cable gland size defines the specific cable diameter range that a gland is designed to firmly hold and properly seal. Selecting the correct size is essential to ensure reliable performance and long-term safety in any electrical system.
Choosing the appropriate cable gland size guarantees:
Mechanical protection – protects the cable from damage caused by tension, vibration, or twisting.
Environmental sealing – prevents dust, moisture, and gases from entering electrical enclosures.
Electrical safety – ensures correct earthing continuity and shielding, especially in armoured cables.
Cable glands are typically measured in millimeters (mm) and correspond to the outer diameter (OD) of the cable. For instance, if the cable OD is 20 mm, the selected cable gland size must accommodate a sealing range such as 18–22 mm to ensure proper grip and sealing.
Selecting the wrong cable gland size can lead to improper fitting, ineffective sealing, and potential electrical failures. For this reason, engineers and installers always consult a reliable cable gland size chart before proceeding with installation.
Cable Gland Type and Size
Choosing the correct cable gland type and size is essential for ensuring safety, durability, and long-term performance in electrical installations. The selection process should be based on factors such as application type, cable construction, operating environment, and required protection level.
Various cable gland types are specifically engineered for indoor use, outdoor environments, hazardous zones, and flameproof systems. Understanding the differences helps in selecting the most suitable solution for each project.
Below are the most widely used cable gland types:
Single Compression Cable Glands
Single Compression Cable Glands are primarily intended for unarmoured cables. These glands provide sealing at a single compression point, ensuring adequate strain relief and environmental protection.
They are generally:
Used for unarmoured cables
Designed to provide basic sealing and strain relief
Suitable for indoor and controlled environments
This type is commonly chosen for standard electrical installations where heavy-duty protection is not required.
Double Compression Cable Glands
Double Compression Cable Glands are specifically designed for armoured cables. Unlike single compression types, they seal both the inner bedding and the outer sheath of the cable.
Key features include:
Designed for armoured cables
Provides sealing at both the inner and outer sheath of the cable
Offers extra mechanical strength and enhanced weatherproofing
Preferred for outdoor and hazardous areas
These glands are widely used in demanding industrial environments where additional protection and durability are required.
Brass Cable Glands
Brass Cable Glands are manufactured using high-quality brass material to ensure strength and longevity. They are commonly used in industrial applications due to their corrosion resistance and mechanical durability.
Important characteristics:
Made of high-quality brass material for durability
Suitable for both armoured and unarmoured cables
Corrosion-resistant and ideal for industrial applications
Brass glands are considered a reliable solution for heavy-duty electrical installations.
Flameproof / A2F Cable Glands
Flameproof / A2F Cable Glands are specially engineered for use in hazardous zones where explosive gases or flammable environments may be present.
They are:
Specially designed for hazardous zones
Engineered to prevent flame propagation inside equipment
Commonly used for unarmoured cables in flameproof enclosures
These glands play a critical role in ensuring safety in high-risk industrial sectors.
Cable Gland Size Chart PDF
For practical on-site reference, many engineers prefer carrying a cable gland size chart PDF. A portable PDF format makes it easier to verify sizing during installation, inspection, maintenance, or procurement activities.
Several versions are available depending on project requirements, including:
Electrical cable gland size chart PDF – covers both armoured and unarmoured cable sizes
Double compression cable gland size chart PDF – designed for hazardous areas, outdoor installations, and heavy-duty applications
Armoured cable gland size chart PDF – specifically for armored cables with metallic sheathing
Downloading the detailed cable gland size chart PDF allows professionals to select the correct cable gland size efficiently, eliminating errors and reducing installation risks.
Cable Gland Size Chart Types / Series
Cable glands are generally categorized based on whether the cable construction is unarmoured or armoured. Each classification follows a specific series, with its own cable gland size charts and defined clamping ranges.
Because armoured and unarmoured cables differ in structure and protection requirements, their corresponding gland types are also designed differently. As a result, the size chart types and series vary to ensure proper sealing, mechanical grip, and long-term performance.
Understanding the correct cable gland size chart types / series helps in selecting the appropriate gland that matches the cable diameter and application conditions without compromising safety or efficiency.
Cable Gland Size Chart for Unarmoured Cable :
| Size Selection Chart For Unarmoured Cable | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Note: These gland sizes may be one size up, please measure actual cable size and compare with the min/max sizes in the appropriate glands group. | ||||||||||||
| Cable Size (mm²) | No. of Cores | UNARMOURED | Cable Size (mm²) | No. of Cores | UNARMOURED | |||||||
| Approx. Min Cable Outer | Approx. Max Cable Outer | A2F Series – Single Compression Type Cable Gland Size | SCU-SCUB-DCU-DCUB Series Cable Gland Size | Approx. Min Cable Outer | Approx. Max Cable Outer | A2F Series – Single Compression Type Cable Gland Size | SCU-SCUB-DCU-DCUB Series Cable Gland Size | |||||
| 0.5 | 3 | 5.5 | 6.3 | A2F#16; A2F20S | 16; 20; 20L | 6 | 2 | 14.8 | 15.1 | A2F#25 | 25; 32 | |
| 0.5 | 4 | 5.7 | 6 | A2F#16; A2F20S | 16; 20; 20L | 6 | 3 | 15 | 16.2 | A2F#25 | 25; 32 | |
| 0.75 | 2 | 6.2 | 6.4 | A2F#16; A2F20S | 16; 20; 20L | 6 | 4 | 16.7 | 18 | A2F#25; A2F#32 | 25; 32 | |
| 0.75 | 3 | 6.1 | 7.1 | A2F#16; A2F20S | 16; 20; 20L | 6 | 5 | 20.1 | 20.1 | A2F#32 | 32; 40; 50 | |
| 0.75 | 4 | 7.2 | 7.8 | A2F#16; A2F20S | 16; 20; 20L | 6 | 7 | 20 | 20.4 | A2F#25; A2F#32 | 32; 40; 50 | |
| 0.75 | 7 | 8 | 8.7 | A2F#16; A2F20L | 16; 20L | 10 | 2 | 20.3 | 20.3 | A2F#32 | 32; 40; 50 | |
| 1 | 2 | 6.6 | 8.9 | A2F#16; A2F20S; A2F#20L | 16; 20; 20L | 10 | 3 | 21 | 21.8 | A2F#32 | 32; 40; 50 | |
| 1 | 3 | 7 | 9.6 | A2F#16; A2F20S; A2F#20L | 16; 20; 20L | 10 | 4 | 20 | 23.8 | A2F#25; A2F#32 | 32; 40; 50 | |
| 1 | 4 | 8 | 10.6 | A2F#16; A2F20S; A2F#20L | 16; 20; 20L | 10 | 5 | 25.7 | 26.2 | A2F#32; A2F#40 | 40; 50 | |
| 1 | 7 | 8.5 | 9.3 | A2F#16; A2F20S; A2F#20L | 20; 20L; 25 | 10 | 7 | 23.2 | 23.4 | A2F#32 | 40; 50 | |
| 1.5 | 2 | 7.8 | 10 | A2F#16; A2F20S; A2F#20L | 16; 20; 20L; 25 | 16 | 2 | 22 | 22.6 | A2F#32 | 40; 50 | |
| 1.5 | 3 | 8.3 | 10.7 | A2F#16; A2F20S; A2F#20L | 20; 20L; 25 | 16 | 3 | 23.8 | 24.2 | A2F#32; A2F#40 | 40; 50 | |
| 1.5 | 4 | 9.3 | 11.7 | A2F#16; A2F20S; A2F#20L | 20; 20L; 25 | 16 | 4 | 23 | 26.4 | A2F#32; A2F#40 | 40; 50 | |
| 1.5 | 5 | 10 | 13 | A2F#16; A2F20S; A2F#20L; A2#F25 | 20; 20L; 25 | 16 | 5 | 28.8 | 29.5 | A2F#40 | 40; 50 | |
| 1.5 | 7 | 10.9 | 15.4 | A2F#20L; A2F#25 | 20; 20L; 25; 32 | 25 | 2 | 27 | 27.7 | A2F#40 | 40; 50 | |
| 1.5 | 8 | 15.4 | 15.8 | A2F25 | 25; 32 | 25 | 3 | 29 | 29.7 | A2F#40 | 40; 50 | |
| 1.5 | 10 | 15.8 | 19.4 | A2F#25; A2F#32 | 25; 32 | 25 | 4 | 26.2 | 32.9 | A2F#40; A2F#50S | 40; 50 | |
| 1.5 | 12 | 19.5 | 20.1 | A2F#25; A2F#33 | 32; 40; 50 | 25 | 5 | 31 | 31.7 | A2F#40; A2F#50S | 50 | |
| 1.5 | 14 | 20.1 | 22 | A2F#32 | 40; 50 | 35 | 2 | 32.5 | 33 | A2F#50S | 50 | |
| 1.5 | 19 | 23.1 | 23.6 | A2F#33 | 40; 50 | 35 | 3 | 33 | 33.6 | A2F#50S | 50 | |
| 1.5 | 24 | 27 | 27.5 | A2F#40 | 40; 50 | 35 | 4 | 31.8 | 32.3 | A2F#40; A2F#50S | 50 | |
| 1.5 | 27 | 27.5 | 30 | A2F#40; A2F#50S | 40; 50 | 35 | 5 | 32.3 | 33 | A2F#50S | 50 | |
| 1.5 | 30 | 30 | 30.5 | A2F#40; A2F#50S | 50 | 50 | 2 | 38 | 39 | A2F#50S; A2F#50L | 63 | |
| 1.5 | 37 | 30.6 | 31.5 | A2F#40; A2F#50S | 50 | 50 | 3 | 39 | 39.5 | A2F#50L | 63 | |
| 2.5 | 2 | 9.6 | 11.7 | A2F#16; A2F20S; A2F#20L | 20; 20L; 25 | 50 | 4 | 43.3 | 43.6 | A2F#50L; A2F#63S | 63 | |
| 2.5 | 3 | 10.3 | 12.5 | A2F#16; A2F20S; A2F#20L; A2F#25 | 20; 20L; 25 | 50 | 5 | 43 | 44 | A2F#50L; A2F#63S | 63 | |
| 2.5 | 4 | 11.9 | 13.8 | A2F#20L; A2F#25 | 20L; 25 | 70 | 2 | 41 | 42 | A2F#50L; A2F#63S | 63 | |
| 2.5 | 5 | 12.2 | 15.3 | A2F#20L; A2F#26 | 20L; 25; 32 | 70 | 3 | 42 | 42.9 | A2F#50L; A2F#63S | 63 | |
| 2.5 | 7 | 13.2 | 17.8 | A2F#25 | 25; 32 | 70 | 4 | 47 | 47.6 | A2F#63S | 75 | |
| 2.5 | 8 | 17.8 | 19 | A2F#25; A2F#32 | 32 | 95 | 2 | 49.5 | 49.8 | A2F#63S | 75 | |
| 2.5 | 10 | 19.1 | 23 | A2F#25; A2F#33 | 32; 40; 50 | 95 | 3 | 49.5 | 50.1 | A2F#63S; A2F#63L | 75 | |
| 2.5 | 12 | 23.1 | 23.3 | A2F#32 | 40; 50 | 95 | 4 | 55.8 | 56 | A2F#63L; A2F#75S | 75; 75L; 85 | |
| 2.5 | 14 | 23.3 | 26.8 | A2F#32; A2F#40 | 40; 50 | 120 | 2 | 53 | 53.5 | A2F#63L | 75 | |
| 2.5 | 19 | 26.9 | 27.5 | A2F#40 | 40; 50 | 120 | 3 | 53.5 | 54 | A2F#63L | 75 | |
| 2.5 | 24 | 31.8 | 32.4 | A2F40; A2F50S | 50 | 120 | 4 | 59 | 59.9 | A2F#75S | 75L; 85 | |
| 2.5 | 27 | 32.4 | 33 | A2F#50S | 50 | 150 | 2 | 58 | 59 | A2F#75S | 75L; 85 | |
| 2.5 | 30 | 33 | 36 | A2F#50S | 50; 63 | 150 | 3 | 59 | 59.5 | A2F#75S | 75L; 85 | |
| 2.5 | 37 | 36.8 | 37.2 | A2F#50S | 63 | 150 | 4 | 65.5 | 66.3 | A2F#75L | 75L; 85; 90 | |
| 4 | 2 | 11 | 13.6 | A2F#20L; A2F#25 | 20; 20L; 25 | 185 | 2 | 66 | 66.8 | A2F#75L; A2F#90 | 75L; 85; 90 | |
| 4 | 3 | 11.4 | 14.6 | A2F#20L; A2F#26 | 20; 20L; 25 | 185 | 3 | 66.8 | 67.3 | A2F#90 | 75L; 85; 90 | |
| 4 | 4 | 13.5 | 16.1 | A2F#20L; A2F#27 | 20L; 25; 32 | 185 | 4 | 73 | 73.8 | A2F#90 | 90; 100; 110 | |
| 4 | 5 | 14.1 | 18.1 | A2F#25 | 25; 32 | 240 | 2 | 72 | 73 | A2F#90 | 90; 100; 110 | |
| 4 | 7 | 20.5 | 20.9 | A2F#32 | 32; 40; 50 | 240+ | Measure Actual Cable Diameter | A2F#90 | 90; 100; 110 | |||
| 4 | 8 | 20.8 | 21.2 | A2F#33 | 40; 50 | |||||||
| 4 | 10 | 21.2 | 26.3 | A2F#32; A2F#40 | 40; 50 | |||||||
| 4 | 12 | 27 | 27.8 | A2F#40 | 40; 50 | |||||||
| 4 | 14 | 27.5 | 28 | A2F#41 | 40; 50 | |||||||
| 4 | 19 | 28 | 28.5 | A2F#42 | 40; 50 | |||||||
For unarmoured cables, glands are usually single compression or flameproof A2F type. These glands provide sealing but do not require gripping metallic armour.
A2F Single Compression Cable Gland Size Chart
For unarmoured cables, glands are usually single compression or flameproof A2F type. These glands provide sealing but do not require gripping metallic armour.
| A2F – Single Compression Cable Glands – Size & Unarmoured Cable Clamping Range | |||||||
| SIZE | Cable Clamping Range (MM) | AVAILABLE ENTRY THREADS | |||||
| ISO METRIC | NPT | ET (BSC) | BSPP | BSPT | PG | ||
| A2F#16 | 2.5 – 10 | M16 | 1/2″ | 5/8″ | G 3/4 | G 3/4 | PG 9 |
| A2F#20S | 2.5 – 10 | M20 | 1/2″ | 3/4″ | G 1/2 | G 1/2 | PG 11 |
| A2F#20L | 8 – 14 | M20 | 1/2″ | 3/4″ | G 1/2 | G 1/2 | PG 13.5, PG 16 |
| A2F#25 | 12.5 – 20 | M25 | 3/4″ | 1″ | G 3/4 | G 3/4 | PG 21 |
| A2F#32 | 18 – 26.3 | M32 | 1″ | 1-1/4″ | G 1 | G 1 | PG 29 |
| A2F#40 | 24 – 32.2 | M40 | 1-1/4″ | 1-1/2″ | G 1-1/4 | G 1-1/4 | PG 36 |
| A2F#50S | 30 – 38 | M50 | 1-1/2″ | 2″ | G 1-1/2 | G 1-1/2 | PG 42 |
| A2F#50L | 38 – 44 | M50 | 2″ | 2″ | G 1-1/2 | G 1-1/2 | PG 42 |
| A2F#63S | 42 – 50 | M63 | 2″ | 2-1/2″ | G 2 | G 2 | PG 48 |
| A2F#63L | 50 – 56 | M63 | 2-1/2″ | 2-1/2″ | G 2 | G 2 | – |
| A2F#75S | 55 – 62 | M75 | 2-1/2″ | 3″ | G 2-1/2 | G 2-1/2 | – |
| A2F#75L | 60 – 68 | M75 | 3″ | 3″ | G 2-1/2 | G 2-1/2 | – |
| A2F#90 | 66.6 – 80 | M90 | 3-1/2″ | 3-1/2″ | G 3 | G 3 | – |
The A2F type is a flameproof gland suitable for unarmoured cables. It ensures safe entry of cables in hazardous zones.
Cable Gland Size Chart Series SCU, SCUB, DCU, DCUB - Size & Clamping Range
The A2F type is a flameproof gland suitable for unarmoured cables. It ensures safe entry of cables in hazardous zones.
| Series SCU, SCUB, DCU, DCUB – Size & Unarmoured Cable Clamping Range | |||||||
| SIZE | Cable Clamping Range (MM) | AVAILABLE ENTRY THREADS | |||||
| ISO METRIC | NPT | ET (BSC) | BSPP | BSPT | PG | ||
| 16 | 2 – 8 | M16 | 3/8″ | 5/8″ | G 3/8″ | G 3/8″ | PG 9 |
| 20 | 4 – 12 | M20 | 1/2″ | 3/4″ | G 1/2″ | G 1/2″ | PG 11, PG 13.5 |
| 20L | 5 – 14 | M20 | 1/2″ | 3/4″ | G 1/2″ | G 1/2″ | PG 16 |
| 25 | 9 – 17 | M25 | 3/4″ | 1″ | G 3/4″ | G 3/4″ | PG 21 |
| 32 | 14 – 23 | M32 | 1″ | 1-1/4″ | G 1″ | G 1″ | PG 29 |
| 40 | 20 – 29 | M40 | 1-1/4″ | 1-1/2″ | G 1-1/4″ | G 1-1/4″ | PG 36 |
| 50 | 20 – 35 | M50 | 1-1/2″ | 2″ | G 1-1/2″ | G 1-1/2″ | PG 42 |
| 63 | 35 – 45 | M63 | 2″ | 2-1/2″ | G 2″ | G 2″ | PG 48 |
| 75 | 45 – 56 | M75 | 2-1/2″ | 3″ | G 2-1/2″ | G 2-1/2″ | |
| 75L | 56 – 68 | M75 | 3″ | 3″ | G 2-1/2″ | G 2-1/2″ | |
| 85 | 56 – 68 | M85 | 3″ | 3-1/4″ | G 3″ | G 3″ | |
| 90 | 62 – 74 | M90 | 3-1/2″ | 3-1/2″ | G 3″ | G 3″ | |
| 100 | 68 – 90 | M100 | 3-1/2″ | 4″ | G 3-1/2″ | G 3-1/2″ | |
| 110 | 68 – 90 | M110 | 4″ | 4-1/2″ | G 4″ | G 4″ | |
| 115 | 84 – 98 | M115 | 4″ | G 4″ | G 4″ | ||
| 120 | 84 – 98 | M120 | 4″ | ||||
| 130 | 94 – 114 | M130 | 5″ | ||||
The SCU, SCUB, DCU, and DCUB series are specifically designed for unarmoured cables, each offering different levels of sealing and mechanical strength.
Cable Gland Size Chart for Armoured Cable
| SIZE SELECTION CHART FOR ARMOURED CABLE | ||||||||||||
| Note: These gland sizes may be one size s please measure actual cable size and compare with the minimas sizes in the appropriate glands group | ||||||||||||
| Cable Size (mm2) | No. of Cores | Steel Wire Armouring (SWA) | Cable Size (mm2) | No. of Cores | Steel Wire Armouring (SWA) | |||||||
| Approx Min Cable Bedding | Approx Max Cable Bedding | ElFW Series Double Compression Type Cable Gland Size | DCA-DCAB-SCA SCAB Series Cable Gland Size | Approx Min Cable Bedding | Approx Max Cable Bedding | ElFW Series Double Compression Type Cable Gland Size | DCA-DCAB-SCA SCAB Series Cable Gland Size | |||||
| 1 | 2 | 8 | 9.5 | E1FW16/20S | 16,20/20 | 10 | 2 | 12.3 | 13.5 | E1FW20L | 20/25 | |
| 1 | 3 | 9.1 | 9.6 | E1FW16/20S | 20/20 | 10 | 3 | 13.1 | 20.7 | E1FW32 | 20/25,32 | |
| 1 | 4 | 9.5 | 10.4 | E1FW20S | 20/20/25 | 10 | 4 | 14.5 | 16.4 | E1FW25S,25L | 25,32 | |
| 1 | 7 | 10.2 | 10.5 | E1FW20S | 20/25 | 10 | 5 | 17.2 | 19 | E1FW25S,25L | 32 | |
| 1 | 12 | 13 | 13.5 | E1FW20L | 20/25 | 10 | 7 | 15 | 20 | E1FW32 | 25,32,40,50 | |
| 1 | 19 | 15.6 | 16 | E1FW25S,25L | 25,32 | 16 | 2 | 14.3 | 15.5 | E1FW25S,25L | 25,32 | |
| 1 | 27 | 20 | 20.5 | E1FW32 | 32,40 | 16 | 3 | 15.3 | 22.8 | E1FW32 | 25,32,40,50 | |
| 1 | 37 | 22 | 23 | E1FW32 | 32,40 | 16 | 4 | 17 | 19.8 | E1FW25S,25L | 25,32 | |
| 1.5 | 2 | 7.3 | 9.1 | E1FW16/20S | 16,20/20 | 16 | 5 | 20 | 21.5 | E1FW32 | 32,40,50 | |
| 1.5 | 3 | 7.8 | 9.9 | E1FW16/20S | 16,20/20 | 16 | 7 | 18.1 | 18.5 | E1FW25S,25L | 32 | |
| 1.5 | 4 | 8.5 | 10.9 | E1FW20S | 20/20 | 25 | 2 | 14 | 14.7 | E1FW25S,25L | 20/25,32 | |
| 1.5 | 5 | 9.7 | 12.3 | E1FW20L | 20/25 | 25 | 3 | 17.7 | 24.9 | E1FW32 | 32,40,50 | |
| 1.5 | 7 | 10 | 14.2 | E1FW25S,25L | 20/25/32 | 25 | 4 | 20.6 | 21.5 | E1FW32 | 32,40,50 | |
| 1.5 | 8 | 12.6 | 15.2 | E1FW25S,25L | 20/25/32 | 25 | 5 | 24.7 | 26.5 | E1FW40 | 40,50 | |
| 1.5 | 10 | 14.8 | 15.4 | E1FW25S,25L | 25/32 | 25 | 7 | 21 | 21.5 | E1FW32 | 32,40,50 | |
| 1.5 | 12 | 13.7 | 15.8 | E1FW25S,25L | 20/25/32 | 35 | 2 | 16 | 16.8 | E1FW25S,25L | 25,32 | |
| 1.5 | 14 | 16.2 | 17.6 | E1FW25S,25L | 25/32 | 35 | 3 | 19.3 | 21.3 | E1FW32 | 32,40,50 | |
| 1.5 | 19 | 16.2 | 20.5 | E1FW32 | 25/32,40 | 35 | 4 | 21.9 | 24 | E1FW32 | 32,40,50 | |
| 1.5 | 24 | 21.7 | 22.4 | E1FW32 | 32,40/50 | 35 | 5 | 27.8 | 29.5 | E1FW40 | 40,50 | |
| 1.5 | 27 | 20 | 22.9 | E1FW32 | 32,40/50 | 50 | 2 | 18 | 19 | E1FW25S,25L | 32 | |
| 1.5 | 30 | 23.7 | 23.9 | E1FW32 | 40,50 | 50 | 3 | 21.7 | 24.2 | E1FW32 | 32,40,50 | |
| 1.5 | 37 | 22.3 | 26.7 | E1FW40 | 32,40/50 | 50 | 4 | 25 | 28.1 | E1FW40 | 40,50 | |
| 2.5 | 2 | 8.5 | 9 | E1FW16/20S | 20,20/25 | 50 | 5 | 31.8 | 32.4 | E1FW50S | 50 | |
| 2.5 | 3 | 9.2 | 10 | E1FW20S | 20/20/25 | 70 | 2 | 21 | 22 | E1FW32 | 32,40,50 | |
| 2.5 | 4 | 9.9 | 10.6 | E1FW20S | 20/20/25 | 70 | 3 | 24.7 | 27 | E1FW40 | 40,50 | |
| 2.5 | 5 | 11.5 | 13 | E1FW20L | 20/20/25 | 70 | 4 | 29.2 | 31.5 | E1FW40 | 50 | |
| 2.5 | 7 | 11 | 13 | E1FW20L | 20/20/25 | 95 | 2 | 24.7 | 25.1 | E1FW32 | 40,50 | |
| 2.5 | 8 | 12 | 13 | E1FW20L | 20/20/25 | 95 | 3 | 28.6 | 31.1 | E1FW40 | 40,50 | |
| 2.5 | 10 | 16 | 16.6 | E1FW25S,25L | 25,32 | 95 | 4 | 33.3 | 36 | E1FW50S | 50,63 | |
| 2.5 | 12 | 16.3 | 18.1 | E1FW25S,25L | 25,32 | 95 | 5 | 42 | 43 | E1FW50L | 63 | |
| 2.5 | 14 | 18 | 19 | E1FW25S,25L | 32 | 120 | 2 | 27.2 | 27.9 | E1FW40 | 40,50 | |
| 2.5 | 19 | 19.9 | 21.4 | E1FW32 | 32,40 | 120 | 3 | 31 | 33.5 | E1FW50S | 50 | |
| 2.5 | 24 | 24.7 | 25.1 | E1FW32 | 40,50 | 120 | 4 | 35.4 | 40 | E1FW50L | 63 | |
| 2.5 | 27 | 24 | 25.7 | E1FW32 | 40,50 | 150 | 2 | 29.5 | 30.9 | E1FW40 | 50 | |
| 2.5 | 30 | 26 | 26.6 | E1FW40 | 40,50 | 150 | 3 | 33.9 | 37 | E1FW50S,50L | 50,63 | |
| 2.5 | 37 | 26.9 | 29.4 | E1FW40 | 40,50 | 150 | 4 | 39.3 | 44 | E1FW50L,63S | 63 | |
| 4 | 2 | 9.4 | 11 | E1FW20S | 20/20/25 | 185 | 2 | 37 | 37.8 | E1FW50L | 63 | |
| 4 | 3 | 10 | 11.5 | E1FW20S | 20/20/25 | 185 | 3 | 37.8 | 42 | E1FW50L,63S | 63 | |
| 4 | 4 | 11 | 12.5 | E1FW20L | 20/20/25 | 185 | 4 | 44.5 | 49 | E1FW63S | 63,75 | |
| 4 | 5 | 13 | 14.5 | E1FW25S,25L | 20/25/32 | 240 | 2 | 41.8 | 42.6 | E1FW50L,63S | 63 | |
| 4 | 7 | 12 | 15 | E1FW25S,25L | 25/32 | 240 | 3 | 42.6 | 47 | E1FW63S | 63,75 | |
| 4 | 8 | 17.3 | 18.1 | E1FW25S,25L | 32 | 240 | 4 | 50 | 55 | E1FW63L | 75 | |
| 4 | 10 | 19.7 | 20.2 | E1FW32 | 32,40 | 300 | 2 | 49 | 49.8 | E1FW63S | 75 | |
| 4 | 12 | 20.4 | 21 | E1FW32 | 32,40/50 | 300 | 3 | 49.8 | 52 | E1FW63L | 75 | |
| 4 | 14 | 22 | 22.8 | E1FW32 | 32,40/50 | 300 | 4 | 58 | 61 | E1FW75S | 75,85 | |
| 4 | 19 | 24.9 | 25 | E1FW32 | 40,50 | 400 | 2 | 61 | 63 | E1FW75L | 75,85 | |
| 6 | 2 | 10.5 | 12 | E1FW20S | 20/20/25 | 400 | 3 | 62.5 | 64 | E1FW75L | 75,85,90 | |
| 6 | 3 | 11.2 | 13 | E1FW20L | 20/20/25 | 400 | 4 | 64 | 68 | E1FW90 | 75,85,90 | |
| 6 | 4 | 12.3 | 14 | E1FW25S,25L | 20/25/32 | 400+ | Measure Actual Cable Diameter | |||||
| 6 | 5 | 14.5 | 16 | E1FW25S,25L | 25/32 | |||||||
| 6 | 7 | 13.5 | 17.5 | E1FW25S,25L | 20/25/32 | |||||||
For armoured cables, double compression glands are the standard choice. These glands grip both the inner and outer sheath of the cable, ensuring excellent strength and environmental protection.
Double Compression Cable Gland Size Chart & Armoured Cable Clamping Range
| E1FW – Double Compression Cable Glands – Size & Armoured Cable Clamping Range | ||||||||
SIZE | Cable Bedding Diameter (MM) | Overall Cable Diameter (MM) | AVAILABLE ENTRY THREADS | |||||
| ISO METRIC | NPT | ET (BSC) | BSPP | BSPT | PG | |||
| E1FW#16 | 4 – 9.8 | 6.1 – 13.3 | M16 | 1/2″ | 5/8″ | G 3/4 | G 3/4 | PG 9 |
| E1FW#20S16 | 4 – 9.8 | 6.1 – 13.3 | M20 | 1/2″ | 5/8″ | G 3/4 | G 3/4 | PG 11 |
| E1FW#20S | 5 – 12 | 9.5 – 16.3 | M20 | 1/2″ | 3/4″ | G 1/2 | G 1/2 | PG 11 |
| E1FW#20L | 6.0 – 13.9 | 12.5 – 21.2 | M20 | 1/2″ | 3/4″ | G 1/2 | G 1/2 | PG 13.5, PG 16 |
| E1FW#25S | 11 – 19.5 | 14 – 22.3 | M25 | 3/4″ | 1″ | G 3/4 | G 3/4 | PG 21 |
| E1FW#25L | 11 – 19.9 | 18.2 – 26.7 | M25 | 3/4″ | 1″ | G 3/4 | G 3/4 | PG 21 |
| E1FW#32 | 15.5 – 26.2 | 23 – 34.4 | M32 | 1″ | 1-1/4″ | G 1 | G 1 | PG 29 |
| E1FW#40 | 21 – 32.1 | 27.9 – 40.8 | M40 | 1-1/4″ | 1-1/2″ | G 1-1/4 | G 1-1/4 | PG 36 |
| E1FW#50S | 28 – 38 | 35.2 – 47.2 | M50 | 1-1/2″ | 2″ | G 1-1/2 | G 1-1/2 | PG 42 |
| E1FW#50L | 35.5 – 44 | 40.4 – 53.2 | M50 | 2″ | 2″ | G 1-1/2 | G 1-1/2 | PG 42 |
| E1FW#63S | 39.5 – 49.9 | 45.6 – 59.9 | M63 | 2″ | 2-1/2″ | G 2 | G 2 | PG 48 |
| E1FW/M63L | 47 – 55.9 | 54.6 – 66.2 | M63 | 2-1/2″ | 2-1/2″ | G 2 | G 2 | |
| E1FW#75S | 52.5 – 61.9 | 59 – 72.4 | M75 | 2-1/2″ | 3″ | G 2-1/2 | G 2-1/2 | |
| E1FW#75L | 59.1 – 67.9 | 66.7 – 78.9 | M75 | 3″ | 3″ | G 2-1/2 | G 2-1/2 | |
| E1FW#90 | 66.5 – 79.9 | 76.2 – 91.4 | M90 | 3-1/2″ | 3-1/2″ | G 3 | G 3 | |
For armoured cables, double compression glands are the standard choice. These glands grip both the inner and outer sheath of the cable, ensuring excellent strength and environmental protection.
Cable Gland Size Chart Series DCA, DCAB, SCA, SCAB – Size Section Chart
| Series DCA, DCAB, SCA, SCAB – Size & Armoured Cable Clamping Range | ||||||||
| SIZE | Cable Bedding Diameter | Overall Cable Diameter | AVAILABLE ENTRY THREADS | |||||
| ISO METRIC | NPT | ET (BSC) | BSPP | BSPT | PG | |||
| 16 | 2 – 8 | 5 – 13 | M16 | 3/8″ | 5/8″ | G 3/8″ | G 3/8″ | PG 9 |
| 20 | 4 – 12 | 6 – 18 | M20 | 1/2″ | 3/4″ | G 1/2″ | G 1/2″ | PG 11, PG 13.5 |
| 20L | 5 – 14 | 9 – 19 | M20 | 1/2″ | 3/4″ | G 1/2″ | G 1/2″ | PG 16 |
| 25 | 9 – 17 | 13 – 23 | M25 | 3/4″ | 1″ | G 3/4″ | G 3/4″ | PG 21 |
| 32 | 14 – 23 | 18 – 30 | M32 | 1″ | 1-1/4″ | G 1″ | G 1″ | PG 29 |
| 40 | 20 – 29 | 24 – 35 | M40 | 1-1/4″ | 1-1/2″ | G 1-1/4″ | G 1-1/4″ | PG 36 |
| 50 | 20 – 35 | 26 – 43 | M50 | 1-1/2″ | 2″ | G 1-1/2″ | G 1-1/2″ | PG 42 |
| 63 | 35 – 45 | 42 – 52 | M63 | 2″ | 2-1/2″ | G 2″ | G 2″ | PG 48 |
| 75 | 45 – 56 | 52 – 65 | M75 | 2-1/2″ | 3″ | G 2-1/2″ | G 2-1/2″ | |
| 75L | 56 – 68 | 65 – 78 | M75 | 3″ | 3″ | G 2-1/2″ | G 2-1/2″ | |
| 85 | 56 – 68 | 65 – 78 | M85 | 3″ | 3-1/4″ | G 3″ | G 3″ | |
| 90 | 62 – 74 | 71 – 84 | M90 | 3-1/2″ | 3-1/2″ | G 3″ | G 3″ | |
| 100 | 68 – 90 | 78 – 102 | M100 | 3-1/2″ | 4″ | G 3-1/2″ | G 3-1/2″ | |
| 110 | 68 – 90 | 78 – 102 | M110 | 4″ | 4-1/2″ | G 4″ | G 4″ | |
| 115 | 84 – 98 | 96 – 110 | M115 | 4″ | G 4″ | G 4″ | ||
| 120 | 84 – 98 | 96 – 110 | M120 | 4″ | ||||
| 130 | 94 – 114 | 106 – 126 | M130 | 5″ | ||||
These gland series are widely used for different armoured cable applications and provide secure sealing as per industry standards.
3.5 Core 300 sq mm Cable Gland Size
A frequently asked question in large-scale industrial and infrastructure projects is determining the correct cable gland size for 3.5 core 300 sq mm cable. Since this cable type is classified as a heavy-duty power cable, it demands a gland capable of accommodating a large outer diameter while delivering superior mechanical support and secure sealing.
For a 3.5 core 300 sq mm cable, the most commonly recommended option is a double compression armoured cable gland. This type of gland ensures effective clamping on both the inner bedding and the outer sheath, providing enhanced durability, vibration resistance, and environmental protection.
Typical Specifications
Cable Type: 3.5 Core, 300 sq mm
Recommended Gland Type: Double Compression (Armoured)
Clamping Range: Designed to match an OD of approximately 55–65 mm (may vary depending on manufacturer specifications)
Thread Size: Generally M75 or equivalent
👉 As cable manufacturers may have slight differences in outer diameter (OD), it is essential to verify the exact dimensions using the armoured cable gland size chart provided by the gland supplier before final installation.
Conclusion
Selecting the appropriate cable gland size chart plays a crucial role in ensuring safe, secure, and long-lasting electrical installations. Whether it involves small indoor wiring systems or heavy-duty industrial power cables, choosing the correct gland guarantees proper sealing, mechanical stability, and overall reliability.
In this guide, we covered:
Standard cable gland size in mm
Access to downloadable electrical cable gland size chart PDF
Complete armoured cable gland size chart and unarmoured cable gland size chart
Specific references such as the double compression cable gland size chart and the 3.5 core 300 sq mm cable gland size
Using the correct cable gland type and size helps prevent common installation issues such as improper fitting, moisture entry, mechanical stress, and potential electrical failures. Before proceeding with installation, always verify dimensions using the latest cable gland size charts (PDF or manufacturer reference images) to ensure accurate and safe selection.
How to Order Cable Glands from Us
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If you found this blog helpful, check some of the other blogs below:
- Oil & Gas Industry Cable Glands with –60°C to +200°C Range
- Cable Gland Accessories for Weatherproof Glands
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