Complete house generators are permanently connected to your electric system and, if you buy a big enough unit, can supply all your energy needs Portable generators are almost always air-cooled, 3600 RPM models Home generators are available in two types: portable and stationery or standby generators Generators that are 8000 kw and below are considered portable wattage. Your usage of the generator before oil change will depend on hours used, since equipment of this type go by hour usage as pertaining to maintenance.. Power supplier are for power outages that last for more than an estimated few hours. Power supplier issues are usually engine related and not electrical troubles and power supplier's of 10'000 watts or more are not considered portable in my opinion wattage. Onan generator's are one type of machine you can buy.. Generatortroubles will be related to fire fuel and air on the power supplier's engine. RELATED LINKS:Diesel onan generator safety /Diesel guardian generator information /Whole house onan generator advice |