Yes, you need an electrician to install a power generator and it is very important that he is licensed otherwise it would not work/is not legal. Hire the licensed electrician to install a transfer switch.
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When you get an electrical power generator, you should have a certified electrician come into the house to hook it up. You need to know that everything will be done correctly. You need to know that the work will promote safety and dependability. This is something that a true professional in the field will be able to provide. When you hire someone to do the work, you can be sure that you will get what you want.
To determine the amperage output of a generator, you need to know the voltage of the system it will be operating. If we assume a standard 240V system, a 5.5kVA generator would be good for approximately 22.9 amps (5500 watts ÷ 240V). However, please consult the generator's specifications and an electrician to ensure it meets the specific requirements of your electrical system.
A portable generator is often among the most recommended supplies to have at home in the event of earthquake, hurricane or flooding when a natural disaster knocks out the normal power supply. Although a portable generator is most often used to provide an emergency power source to a home or commercial residence, some are also used to provide a reliable power source when camping in the wilds. There are several things to consider when selecting the right portable generator for your purposes. There are various wattage or power levels of portable generator available, so tabulate how much wattage the most essential of your appliances will need in order to buy a portable generator with enough capacity to service those particular electrical needs during a power outage or while camping. Be aware that a portable generator is meant to be a temporary power backup and cannot service all heavy-duty electrical devices at the same time the way your normal electrical system does. Decide which fuel is the most cost efficient for you to run a portable generator, either gasoline or propane gas. Storing gasoline may prove to be hazardous, and certain precautions must be taken with propane gas tanks. Before you choose a specific portable generator, check to see how much fuel is necessary to operate the generator for a set amount of time. When weather or other conditions eliminates your normal source of electricity, using a portable generator can prove to be a lifesaver and help to maintain at least some standard of comfort and safety until the main power source is restored back to normal. Many portable generator owners use their unit to keep fans or air conditioning running during hot and humid weather, to keep heaters operational during snowstorms and winter weather, or to keep refrigerators and freezers from losing power and ruining all the stored foodstuffs. Since it doesn’t require a lot of wattage to run lamps, a portable generator can keep electric lights on during a power outage which is much safer than lighting candles and much longer-lasting than battery operated flashlights which eventually dim and die out. Having a portable generator handy and the right fuel to power it can help provide a homeowner with peace of mind when severe weather or natural disasters strike.
To determine the wire size and breaker needed for a 9000 max watt generator, you would first need to calculate the running wattage of the generator, as this is the value used for sizing the wire and breaker. Once you have the running wattage, you can then refer to the National Electrical Code (NEC) for guidance on the appropriate wire size and breaker size based on the circuit's length and the type of insulation on the wire. It is recommended to consult with a qualified electrician to ensure the installation meets safety and code requirements.
It depends on the size of your house and your energy needs. For a typical household, a generator with a power output between 5,000 to 7,000 watts should be sufficient to power essential appliances. However, it is recommended to consult with a professional to determine the right size generator for your specific needs.