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Locate the inverter as close to the batteries as possible in order to keep the battery cable length
short. However, do not locate the inverter above the batteries or in the same compartment as vented
batteries. Batteries generate hydrogen sulfide gas, which is very corrosive to electronic equipment
and everything else. They also generate hydrogen and oxygen. If accumulated, this mixture will
ignite by an arc caused by the connecting of battery cables or the switching of a relay. Mounting the
inverter in a ventilated enclosure with sealed batteries is acceptable.
9 HQWLODW LRQ
Installation of the inverter in a properly ventilated enclosure is necessary for efficient operation of the
unit. Installation in an enclosure that is too tight or poorly ventilated will result in lower peak power
output, reduced surge capability, and potentially shorter inverter life. This is due to the inverter
reaching its thermal shutdown point sooner than normal from lack of ventilation.
Figure 5, Power Output Versus Temperature
Figure 5, Power Output Versus Temperature
shows the output capabilities of the M3012
inverter/charger, which is dependent on the ambient temperature in the enclosure where the inverter
is located. The dark line represents the maximum power that may be expected from the inverter for
0 10 20 30 40 50 60 70 80 90 100
Ambient Temperature in °Celsius
4kw
3kw
2kw
1kw
Power
Output
ABYC A-25
Inverters shall be installed in a ventilated, dry, accessible location where ambient temperature will not
exceed 122 ºF (50ºC), away from heat sources such as dry engine exhaust and other heat producing
devices. Inverters shall not be installed directly over batteries. Controls shall be readily accessible.
Inverters shall be securely fastened to bulkheads or other vessel structural parts. The base of the unit shall
be at least two feet above normal bilge water, or protected so it is not subject to bilge splash. Protection
shall be provided from falling objects or drippage.
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