CompTIA Server+ Exam: Effects of Exceeding Maximum Rated Load on UPS

Effects of Exceeding Maximum Rated Load on UPS

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Question

Which of the following can occur if the maximum rated load is exceeded on an uninterruptible power supply (UPS)?

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Explanations

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A. B. C. D.

D.

An uninterruptible power supply (UPS) is a device that provides power to electronic devices in the event of a power outage or brownout. When the input power to the UPS is within its rated load capacity, the UPS provides clean, stable power to the connected devices. However, if the maximum rated load is exceeded, there can be several potential consequences.

A. There is a fire hazard potential if a power outage occurs. If the maximum rated load is exceeded, the UPS may overheat and potentially start a fire, especially if the batteries are old or faulty. Additionally, if the connected devices draw more power than the UPS can provide, they may also overheat and create a fire hazard.

B. The last system plugged into the UPS will not be provided any power. If the maximum rated load is exceeded, the UPS may not be able to provide power to all connected devices. As a result, the last system plugged into the UPS may not receive any power at all.

C. The UPS will draw more power from the circuit to compensate. If the maximum rated load is exceeded, the UPS may draw more power from the circuit to compensate, potentially causing a circuit overload. This can cause other devices on the same circuit to lose power or even create a fire hazard.

D. The runtime of the UPS will be insufficient if a power outage occurs. If the maximum rated load is exceeded, the runtime of the UPS may be significantly reduced. This means that in the event of a power outage, the UPS may not be able to provide power to connected devices for as long as expected.

In summary, exceeding the maximum rated load on a UPS can lead to several potential consequences, including fire hazards, power loss to certain devices, circuit overloads, and insufficient runtime in the event of a power outage. Therefore, it is essential to ensure that the connected devices do not exceed the maximum rated load of the UPS.