Test Values and Diagrams
Male/Female Disconnect Insertion/Extraction Forces
The typical average force observed when inserting/extracting a standard NEMA DC2 male test tab into a standard ETCO disconnect while using an ETCO insertion/extraction force gauge to standard operating procedures is shown below:
| Male Size Width (mm) |
First Insertion lbs. (N) |
First Extraction lbs. (N) |
Sixth Extraction Ibs. (N) |
|---|---|---|---|
| * .250" (6.35) | 8.5 (37.81) | 7.5 (33.36) | 5.5 (24.47) |
| .187" (4.75) | 6.0 (26.78) | 10.0 (44.64) | 6.0 (26.78) |
| .110" (2.79) | 6.0 (26.98) | 7.0 (31.25) | 4.0 (17.85) |
* Male test tab with recessed dimple for the detent feature, versus through hole on all others.
Wire/Crimp Ear Pullout Test Values
The minimum force required to separate the wire from the wire crimp ear with the insulation ear, if present, rendered inoperative will be as follows:
In some cases ETCO will recommend higher pullout forces to increase conductivity. ETCO will recommend crimp height to accomplish best all around crimp performance.
| Size Of Conductor AWG |
Pullout Force mm2 |
Pounds | Newtons |
|---|---|---|---|
| 28 | 0.08 | 2 | 8.9 |
| 26 | 0.13 | 3 | 13.4 |
| 24 | 0.20 | 5 | 22.3 |
| 22 | 0.324 | 8 | 35.6 |
| 20 | 0.507 | 13 | 57.7 |
| 18 | 0.823 | 20 | 89.0 |
| 16 | 1.31 | 30 | 133.5 |
| 14 | 2.08 | 50 | 222.5 |
| 12 | 3.31 | 70 | 311.5 |
| 10 | 5.261 | 80 | 356.0 |
| 8 | 8.367 | 90 | 400.5 |
| 6 | 13.30 | 100 | 455.0 |
| 4 | 21.15 | 140 | 623.0 |
Acceptable Measurement Area
- Measuring Crimp Height: Crimp height must be measured with the spindle and anvil of a micrometer, centered against the bottom and the top of the crimp respectively and between the ribs on the bottom of the crimp, if applicable.
