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15 Cards in this Set
- Front
- Back
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The noise levels of generators sized from 5kw-200kw range from how many decibels at 25 feet? |
77dBa-93dBa |
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Generates must not be closer than how many feet to a load because of noise, fire hazard, and air circulation? |
25 feet |
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A generator set should not be operated while inclined more than how many degrees from level? |
15° |
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What is the sum of the rates capacities of all electrical appliances, lamps, motors, and so on, connected to the wiring of the system? |
Connected load |
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What is the ratio between the actual maximum demand and the connected load called? |
Demand factor |
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Exhaust piping inside a building has to be covered with insulation capable of withstanding a temperature of how many degrees? |
1500°F |
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A ground rod must have a minimum diameter of 5/8” of solid or what size if it is pipe? |
3/4” |
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A ground plate must have a minimum area of how many square feet? |
2ft |
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The NEC states that a single electrode consisting of a rod, pipe, or plate have a resistance to ground of ohms? |
25 |
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All electrical generators operating at how many volts or less must be solidly grounded? |
600 volts |
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A ground rod has to be driven to a minimum of how many feet? |
8ft |
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Trenches should be deep enough to bury cables at least how many inches below surface in traffic areas? |
18-24 inches |
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The engine on generator sets should not be cranked in excess of how many seconds at a time? |
15 seconds |
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How much time should the starter on a generator sets have to cool between cranking? |
3 minutes |
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Electrolytes must never exceed what temperature when being placed in dry charged cells? |
90°F |
