Insulation: The insulation shall be an aromatic polyimide tape with an adhesive layer on one or both sides to bond the insulation to the exposed conductor. The covering shall be one or two strips of tape wrapped spirally around the wire. After wrapping, the tape shall be heat sealed. After the heat sealing process is complete, the adhesive shall perform as well as the polyimide tape with a heat rating of 240.
Characteristic:
| Adhesion and flexibility: | No loss of adhesion between tape and conductor or between tape layers |
| Springback | Not more than 5.5° |
| Dielectric breakdown | Not less than 1000 V/mil (39370 V/mm) of the smallest thickness on one side of the tape cover (half the minimum increase) |
Table 3
Dimensions for Tape-Covered Square Magnet Wire (mm）
| AWGSize | N=2 | N=3 | ||||||||||
| t = 0.038 | t = 0.051 | t = 0.076 | t = 0.038 | t = 0.051 | t = 0.076 | |||||||
| Minimum Increase in Diameter | Maximum Overall Diameter | Minimum Increase in Diameter | Maximum Overall Diameter | Minimum Increase in Diameter | Maximum Overall Diameter | Minimum Increase in Diameter | Maximum Overall Diameter | Minimum Increase in Diameter | Maximum Overall Diameter | Minimum Increase in Diameter | Maximum Overall Diameter | |
| 1/0 | 0.127 | 8.562 | 0.178 | 8.639 | 0.254 | 8.791 | 0.203 | 8.639 | 0.254 | 8.740 | 0.381 | 8.943 |
| 1 | 0.127 | 7.650 | 0.178 | 7.727 | 0.254 | 7.879 | 0.203 | 7.727 | 0.254 | 7.828 | 0.381 | 8.031 |
| 2 | 0.127 | 6.838 | 0.178 | 6.914 | 0.254 | 7.066 | 0.203 | 6.914 | 0.254 | 7.015 | 0.381 | 7.219 |
| 3 | 0.127 | 6.114 | 0.178 | 6.190 | 0.254 | 6.342 | 0.203 | 6.190 | 0.254 | 6.292 | 0.381 | 6.495 |
| 4 | 0.127 | 5.469 | 0.178 | 5.545 | 0.254 | 5.697 | 0.203 | 5.545 | 0.254 | 5.646 | 0.381 | 5.850 |
| 5 | 0.127 | 4.895 | 0.178 | 4.971 | 0.254 | 5.123 | 0.203 | 4.971 | 0.254 | 5.072 | 0.381 | 5.276 |
| 6 | 0.127 | 4.384 | 0.178 | 4.460 | 0.254 | 4.613 | 0.203 | 4.460 | 0.254 | 4.562 | 0.381 | 4.765 |
| 7 | 0.127 | 3.929 | 0.178 | 4.006 | 0.254 | 4.158 | 0.203 | 4.006 | 0.254 | 4.107 | 0.381 | 4.310 |
| 8 | 0.127 | 3.515 | 0.178 | 3.592 | 0.254 | 3.744 | 0.203 | 3.592 | 0.254 | 3.693 | 0.381 | 3.896 |
| 9 | 0.127 | 3.162 | 0.178 | 3.239 | 0.254 | 3.391 | 0.203 | 3.239 | 0.254 | 3.340 | 0.381 | 3.543 |
| 10 | 0.127 | 2.842 | 0.178 | 2.918 | 0.254 | 3.071 | 0.203 | 2.918 | 0.254 | 3.020 | 0.381 | 3.223 |
| 11 | 0.127 | 2.558 | 0.178 | 2.634 | 0.254 | 2.786 | 0.203 | 2.634 | 0.254 | 2.736 | 0.381 | 2.939 |
| 12 | 0.127 | 2.304 | 0.178 | 2.380 | 0.254 | 2.532 | 0.203 | 2.380 | 0.254 | 2.482 | 0.381 | 2.685 |
| 13 | 0.127 | 2.083 | 0.178 | 2.159 | 0.254 | 2.311 | 0.203 | 2.159 | 0.254 | 2.261 | 0.381 | 2.464 |
| 14 | 0.127 | 1.882 | 0.178 | 1.958 | 0.254 | 2.111 | 0.203 | 1.958 | 0.254 | 2.060 | 0.381 | 2.263 |