Earth Tags
CMP slip on Earth Tags, installed between the cable gland and equipment, provide an earth bond connection as specified in BS6121:Part 5:1993 and also complies with category "B" rating specified in EN 50262:1999.
This table details fault current ratings relating to CMP Brass Earth Tags:
| CMP Earth Tag Size | Short Circuit Ratings Symmetrical Fault Current (kA) for 1 second |
|---|---|
| 20 | 3.10 |
| 25 | 4.00 |
| 32 | 5.40 |
| 40 | 7.20 |
| 50 | 10.40 |
| 63 | 10.40 |
| 75 | 10.40 |
| Note: Alternative materials are also available. Please refer to Table "E" of the Ordering References page detailed below. e.g. 20ET4 for M20 Stainless Steel Earth Tag, 050NPTET4 for 1/2" NPT Stainless Steel Earth Tag. | |
Metric Earth Tags
| Ordering Reference (Brass) | Reference Cable Entry Size | Minimum Thickness | Nominal Collar Diameter | Earth Link Connection Hole Size | Nominal Length | Nominal Centres |
|---|---|---|---|---|---|---|
| 16ET | M16 | 1.3 | 25.4 | M6 | 49.3 | 30.2 |
| 20ET | M20 | 1.3 | 27.1 | M6 | 53.4 | 33.1 |
| 25ET | M25 | 1.5 | 35.1 | M6 | 59.4 | 35.6 |
| 32ET | M32 | 1.5 | 45.2 | M12 | 77.0 | 43.1 |
| 40ET | M40 | 1.5 | 53.7 | M13 | 88.7 | 45.4 |
| 50ET | M50 | 1.5 | 65.2 | M13 | 111.1 | 58.1 |
| 63ET | M63 | 1.5 | 82.6 | M13 | 128.6 | 66.8 |
| 75ET | M75 | 1.5 | 95.4 | M13 | 141.1 | 73.0 |
| 90ET | M90 | 1.5 | 114.0 | M13 | 161.0 | 85.0 |
| 100ET | M100 | 1.5 | 125.0 | M13 | 190.0 | 103.0 |
| 150ET | M115 | 1.5 | 140.4 | M13 | 210.0 | 117.8 |
| Dimensions are displayed in millimetres unless otherwise stated | ||||||
NPT Earth Tags
| Ordering Reference (Brass) | Reference Diameter "A" | Minimum Thickness | Nominal Diameter "C" | Hole Size "D" | Nominal Length "E" | Nominal Centres "F" |
|---|---|---|---|---|---|---|
| 050NPTET | 1/2" NPT | 0.051 | 1.067 | M6 | 2.102 | 1.303 |
| 075NPTET | 3/4" NPT | 0.051 | 1.382 | M6 | 2.339 | 1.402 |
| 100NPTET | 1" NPT | 0.051 | 1.780 | M12 | 3.031 | 1.697 |
| 125NPTET | 1-1/4" NPT | 0.051 | 2.114 | M13 | 3.492 | 1.787 |
| 150NPTET | 1-1/2" NPT | 0.051 | 2.567 | M13 | 4.374 | 2.287 |
| 200NPTET | 2" NPT | 0.051 | 3.252 | M13 | 5.063 | 2.630 |
| 250NPTET | 2-1/2" NPT | 0.051 | 3.756 | M13 | 5.555 | 2.874 |
| 300NPTET | 3" NPT | 0.051 | 4.496 | M13 | 6.339 | 3.346 |
| 350NPTET | 3-1/2" NPT | 0.051 | 4.961 | M13 | 7.638 | 4.646 |
| All dimensions are in inches unless otherwise stated | ||||||
Additional information
CMP WP Earth Tags_0310 Issue 1
