Auxiliary Fuel Tank for Generator
If this question has been answered somewhere before, please point me to the link. I've searched everywhere and can't seem to find an answer. I bought a used fiver that had a Onan 4000 watt genset ...
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Here is the altitude and temperature information from the Onan RV Generator handbook:
If you travel at high altitudes or in extreme temperatures, your generator can lose power. In such lower-density air conditions, you can’t operate as many electrical devices as you could under normal operating conditions. Power decreases 3.5% for each 1,000 feet above an altitude of 500 feet. For example, to operate at 4,500 feet (4,000 feet above rated generator altitude) multiply 3.5% x 4 (4,000 ft) = 14% power loss. Then multiply .14 x your generator’s power rating: 4,000 watts x .14 = a loss of 560 watts at that altitude.
Power decreases in extreme temperatures by 1% for each 10° F (5.5° C) above 85° F (29.4°C).
So, in the extreme Western high desert, a 100° day at 9000 feet the generator would only put out about 2800 watts. Of course, I DO understand this is the absolute extreme conditions that are pretty atypical.
If you travel at high altitudes or in extreme temperatures, your generator can lose power. In such lower-density air conditions, you can’t operate as many electrical devices as you could under normal operating conditions. Power decreases 3.5% for each 1,000 feet above an altitude of 500 feet. For example, to operate at 4,500 feet (4,000 feet above rated generator altitude) multiply 3.5% x 4 (4,000 ft) = 14% power loss. Then multiply .14 x your generator’s power rating: 4,000 watts x .14 = a loss of 560 watts at that altitude.
Power decreases in extreme temperatures by 1% for each 10° F (5.5° C) above 85° F (29.4°C).
So, in the extreme Western high desert, a 100° day at 9000 feet the generator would only put out about 2800 watts. Of course, I DO understand this is the absolute extreme conditions that are pretty atypical.
