Jim , I finally got the answer That put me
over the edge and decieded to buy one when
it was pointed out to me that I could take it as a business expense for the commercial building.
With a 5,500 watt generator , you
can run more than just your gas fired hot air
or gas fired hot water heat .
No electric hot water heater though, unelse you disconnect all other loads from the generator. Electric hot water sucks current
(AMPS) big time just like an electric stove and electric heat.
to get back on track:NOW>with your gas furnace;
For instance, lets say that the rating plate on your blower motor reads 4.2 amps
@ 120 volts. You multiply 4.2 x 120 = 504
watts. Now--when an electric motor starts up,
it pulls 3 times running current or the amps rating on the motor plate so multipling
504 watts X 3=1,512 watts or about 23 % of the capacity of your generator. This is a
30 second current draw ,only for electric motors and refrigerator & freezers, which also have electric motors to run their freon compressors.
Anyways ,the run current for your gas furnace--IN THIS EXAMPLE only--SINCE i DONT KNOW THE CURRENT RATING OF YOUR FURNACE MOTOR
OR MOTORS ( if more than 1 is used) is 504 watts or 1/10th the capacity of your generator.
You probably have enough extra capacity to run 10 - 1oo watt light bulbs
wich is only 1000 watts. 1000wts+504wts=
1500 watts=31% of your capacity with 69%
capacity in reserve. So, you could probable run your refrigerator too. Say 8 amps (but you check the rating plate on your frig please). 8 x 120=960 watts x 3 (for starting surge)=2880watts+1500watts(from gas heat and 10-100 watt lights=4,380 watts, still below your 5,500 capacity! Even running & starting
both your furnace & refrig & lights all at once! You will however be running as high as 80% capacity with a 20% reserve, but only while both the furnace and the refrig are
starting up similtaniously. You can prevent simioustanious start up by turning off the frig with the cold control, or just unpluging
it for one minute, while the furnace starts up.
I will be doing the same thing ,if & when, but with only a 4,500 watt job & so I
will have to avoid same time start ups as they would bring me to 96% capacity, not a good idea. When not trying to same time start, I will be runing at 66% capacity or
less.
I am not hooking my gen into the circuit breaker panel, but running extension
cords from the gen. to the oil burner feed wire after disconnecting it from the circuit breaker, thus issolating it from the fuse panel.
I will run it thru a 20 amp ,120 volt
fuse which I can screw into a (in line) light socket and wire in series in the extension cord so that if more than 20 amps is drawn ,the fuse will blow and protect my generator.
Same idea as surge protector strips for computers, only handleing more current
that a computer surge strip can handle.
If you have questions email me
larrysdiscountguns@erols.com
[This message has been edited by ernest2 (edited December 17, 1999).]