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"two roads diverged in a wood, and I -- I took the one less traveled by, And that has made all the difference." -- Robert Frost

Saturday, April 7, 2012

RV Things That Work for Us - Generator

A generator that can power AC in the tropics
is a "thing that works" for us
     After much research a few years back, we settled on a Yamaha ef2400is. As far as we could tell, this was the only inverter type generator that covered everything we wanted.
     It is small, lightweight, quiet and capable of running an RV A/C unit. When we saw these Yamaha generators available at a Good Sam Rally, we scooped one up and remain glad we did.
     This generator is remarkably quiet. In measuring sound, every three decibels (dB) doubles the sound energy. At every 10 dB, the human ear perceives a doubling of the noise level.
     The Yamaha 2400 is rated at 53-58 dB, a modest level of noise especially when it is compared with other generators of similar power.
     The Yamaha is lightweight for its power at 70 lbs. We can lift it and move it without much effort. It is compact at 20.7 L x 15.5 W x 18.1 H. It is also thrifty on fuel consumption, which never hurts, and has a fuel capacity of 1.6 gallons. The frequency is not RPM dependent, and it runs at idle until the load requires more power. The RPMs increase incrementally, to meet the load demand. It'll put out 16.7 Amps continuous, or a 20 Amp surge. Its peak power is 24000 watts and its rated power is 2000 watts.
     We had read reviews and comparisons between the Honda 2KW generator and the Yamaha. We understood that we could bridge two Honda 2KW generators together (with an additional piece of hardware), to sync the frequencies and combine their power output. This Yamaha can do that, too, and with no additional hardware required.
     But the main attraction for us to the Yamaha generator is that is can start and run a 13,500 BTU air conditioner (A/C) unit all by itself. Two Honda 2KW generators are required to do this. We could, of course, have bought a bigger generator to do the same function, but then drawbacks appear. First there’s the bigger noise. Next is the heavier weight. And another issue is price. The prices climb rapidly with larger units.

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