An RCD is rated 32 A, 30 mA, AC. What does the 32 A rating indicate?

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Prepare for the Electrical Apprenticeship Technology 2 (T2) Phase 4 Exam with interactive flashcards and multiple-choice questions. Each question is accompanied by hints and explanations to enhance your learning experience and help you succeed!

Multiple Choice

An RCD is rated 32 A, 30 mA, AC. What does the 32 A rating indicate?

Explanation:
The 32 A marking shows the device’s maximum continuous current it can carry through its terminals. This is the thermal/operational limit for normal load current. It’s not telling you the voltage rating, it isn’t a fuse rating, and the leakage sensitivity is a separate value (30 mA). So the 32 A simply indicates the safe current-carrying capability of the RCD during regular operation.

The 32 A marking shows the device’s maximum continuous current it can carry through its terminals. This is the thermal/operational limit for normal load current. It’s not telling you the voltage rating, it isn’t a fuse rating, and the leakage sensitivity is a separate value (30 mA). So the 32 A simply indicates the safe current-carrying capability of the RCD during regular operation.

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