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.|