198Appendix C: Equipment log and configuration worksheets
| Power Usage Worksheet 1 |
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3rd |
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peripheral |
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drive |
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| +3.3 V | +5 V | 5 V | +12 V |
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| Standby |
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Fans |
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Total |
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Current |
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Calculating the total combined power used by the system
1From the previous worksheet, enter the total current for each column in the Power Usage Worksheet 2.
2Multiply the voltage by the total current to get the total wattage for each voltage level.
3Add the total wattage for each voltage level to arrive at the total combined power usage of the power supply.
Power Usage Worksheet 2
Voltage level and total current | Total Watts for each voltage |
(V x A = W) | level |
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(+3.3 V) x (______ A) | ________ W |
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(+5 V) x (______ A) | ________ W |
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________ W | |
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(+12 V) x (______ A) | ________ W |
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________ W | |
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Total Combined Wattage | ________ W |
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