OK ... without the Frig, lights & cash reg, the warmers, oven, & steamers total 4900 watts.
Adding an allowance for:
- the Frig (120v X 6 amp (?)=720 watts)
- overhead Light & counter circuit (cash reg); assume 3 each 15 amp circuits (3 X (120v X 12 amp=4320 watts)
4900 watts + 4320 watts =9220 watts ... this is way more than the 7500 watt gen set. The calculated load needs to be less than 80% of the maximum load of the gen set or you risk tripping the gen breakers by over loading. ... The good news is that you can use both your gen sets by dividing the loads for each. But DO NOT cross connect the gen sets! I suggest using the 7500 to power the steamer, oven, warmer & Frig and the 4000 to power lights & cash reg.
Now some of these do not run all the time, but the you must assume they do (& will at some point) when calculating the output of the gen set.
The electrical rating you gave for the Frig is the estimated TOTAL power consumption for a year. A standard residential Frig draws 4 to 6 amps @ 120 v. I assumed 6 amps, but you must check yours electrical tag. The '443/kw per hr' is correctly wrote as 443 KWhr. That's 1 kw for 443 hours; or 2 KW for 221.5 hrs; or 443 KW for 1 hr; ect
post edited by edwmax - 2012/08/04 20:44:23