What is the amperage rating of the UT transformer's secondary?

What is the amperage rating of the UT transformer's secondary?

• A. 11amps
• B. 20amps
• C. 5amps
• D. 15amps

Answer: (A)

The amount of current the transformer's secondary can safely supply is governed by its thermal design and the size of the windings. This amperage rating is the maximum continuous current the secondary winding can deliver at its rated voltage without overheating or damaging insulation. For the UT transformer in this context, the nameplate specifies 11 amps on the secondary. That means, at the rated secondary voltage, you should not draw more than about 11 A. The VA rating alongside the voltage explains why this is the limit (for example, a 120 V secondary would be 120 V × 11 A ≈ 1320 VA). If you tried to draw more, overheating and potential failure could occur, and protective devices would trip. The other numbers would not reflect the device’s rated capability and could lead to overload or under-delivery relative to the design loads.

The amount of current the transformer's secondary can safely supply is governed by its thermal design and the size of the windings. This amperage rating is the maximum continuous current the secondary winding can deliver at its rated voltage without overheating or damaging insulation. For the UT transformer in this context, the nameplate specifies 11 amps on the secondary. That means, at the rated secondary voltage, you should not draw more than about 11 A. The VA rating alongside the voltage explains why this is the limit (for example, a 120 V secondary would be 120 V × 11 A ≈ 1320 VA). If you tried to draw more, overheating and potential failure could occur, and protective devices would trip. The other numbers would not reflect the device’s rated capability and could lead to overload or under-delivery relative to the design loads.