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What is the minimum branch circuit rating required for continuously loaded individual appliances?

100 percent of the marked ampere rating

110 percent of the marked ampere rating

125 percent of the marked ampere rating

The minimum branch circuit rating required for continuously loaded individual appliances is determined by considering the operational demand placed on the circuit by the appliance. For continuously loaded devices, the National Electrical Code (NEC) specifies that the circuit must be rated at 125 percent of the marked ampere rating of the appliance. This requirement is designed to ensure that the circuit can handle the continuous load without overheating or causing potential hazards, particularly during prolonged usage.

By applying this 125 percent rule, the circuit can accommodate the extra load that might occur during regular operation, promoting safety and efficiency in electrical installations. This calculation takes into account continuous use, ensuring that the circuit is not only adequate for the typical operating conditions but also has a margin of safety built into it to prevent circuit overloads or failures.

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150 percent of the marked ampere rating

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