Maximum acceptable material temperatures.

  1. Law
  2. CFR 16
  3. Commercial Practices
  4. Consumer Product Safety Commission
  5. Federal Hazardous Substances Act Regulations
  6. Requirements for Electrically Operated Toys or Other Electrically Operated Articles Intended for Use by Children
  7. Regulations
  8. Maximum acceptable material temperatures.

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§ 1505.8 Maximum acceptable material temperatures.

The maximum acceptable material temperatures for electrically operated toys shall be as follows (Classes 105, 130, A, and B are from “Motors and Generators,” Standard MG-1-1967[1] published by the National Electrical Manufacturers Association):

Expand Table
Material Degrees C. Degrees F.
Capacitors (1) (1)
Class 105 insulation on windings or relays, solenoids, etc.:
Thermocouple method2 90 194
Resistance method 110 230
Class 130 insulation system 110 230
Insulation:
Varnished-cloth insulation 85 185
Fiber used as electrical insulation 90 194
Expand Table
Class A Class B Class A Class B
Insulation on coil windings of a.c. motors (not including universal motors) and on vibrator coils:
In open motors and on vibrator coils - thermocouple or resistance method2 100 120 212 248
In totally enclosed motors - thermocouple or resistance method2 105 125 221 257
Insulation on coil windings of d.c. motors and of universal motors:
In open motors:
Thermocouple method2 90 110 194 230
Resistance method 100 120 212 248
In totally enclosed motors:
Thermocouple method2 95 115 203 239
Resistance method 105 125 221 257
Phenolic composition3 150 302
Rubber- or thermoplastic-insulated wires and cords3 60 140
Sealing compound (4) (5)
Supporting surface while the toy is operating normally 90 194
Wood and other similar combustible material 90 194

1 If the capacitor has no marked temperature limit, the maximum acceptable temperature will be assumed to be 65 °C. (149 °F.) for an electrolytic type and 90 °C. (194 °F.) for other than an electrolytic type.

2 The temperature indicated refers to the hottest spot on the outside surface of the coil measured by the thermocouple method.

3 The limitations on rubber- and thermoplastic-insulated wires and cords and on phenolic composition do not apply if the insulation or the phenolic has been investigated and found to have special heat-resistant properties, or if the insulation meets the thermal requirements.

4 40 less than melting point.

5 104 less than melting point.

Footnotes - 1505.8

[1] Copies may be obtained from: National Electrical Manufacturers Association, 155 East 44th Street, New York, NY 10017.


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