NEMA GRADES: GPO-1, GPO-2, GPO-3
| General Purpose Grade: |
Good punching properties that satisfy Nema GPO-1 and IEEE temperature class 130*C. Used for transformers, spacers and supports. |
| GPO-1: | A Nema GPO-1 grade with an IEEE rating of 155*C. This grade has a high resistance to cold flow or creep under heat and pressure. Applications include slot wedges for motors, washers, brush plates and terminal boards. |
| GPO-2: | A UL approved grade with a rating of 94V-0 (flammability) and an IEEE temperature rating of 130*C. Its applications for sole support of current carrying parts include insulators for switch gear, appliance and TV components (low-voltage). |
| GPO-3: | Same as GPO-2 except under high-voltage applications as well as a UL recognized arc resistance of 180 seconds. |
