Find out the age of it, and how often it has been run.
If it has not been run in some time, the field on the generator motor could have rust built up on it, and not operate at full output ( or at all ).
This is where most generators become door stops, people buy them, run them once ( and might have a load on it when they run it ) and then let them sit for 3 years, with the same fuel in it.
If it has an auto throttle ( eco throttle ) on it, make sure it has a setting for turning it off. My furnace does not like the auto throttle, it has a bit too much lag in running up the throttle, and causes the furnace to go into an error condition. I have to turn it off, and let the generator run when I am cycling the furnace.
The one you are looking at might have a quicker take up in the auto throttle than my Honda.
I have the small Honda 2000 watt generator, and I run it 4 times a year, each time draining the gas out of it, and running it dry. Make sure when you exercise the generator, you have a large enough load on it.
Think about how you are going to get to the items you are powering.
In my garage I have a surface mounted water proof outlet box that is a separate pipe system. This has an outlet by the furnace, and an outlet in the pantry in the kitchen. Building code calls for a disconnect on the furnace, which is usually a switch. In my area I can also use a cord end and outlet. I changed the switch to an outlet, and put a 12/3 cord end on the furnace. The generator circuit has an outlet by the furnace that I use a short 12/3 cord on to plug into the generator outlet. Also have a cord for the sump pump.
This is the easy route to isolation, without a transfer switch.
The kitchen I just use a 12/3 cord to the refrigerator and table lamps in the house.
Last edited by SSCULLY; 02-20-2010 at 04:22 PM.