No, as far as I know they're constant-RPM units. 3600 RPM is one of the more common ratings. They do have some tricks to maintain a reasonable AC waveform: some claim THD figures of ≤5% - not as good as inverter generators but better than the ~25% that's common for jobsite generators.I wonder, are those whole house units inverter generators? Do they throttle down depending upon the load, or do they run like construction site gennies at 3600 RPMs regardless of the load?
Thanks, I actually had to bug in after bugging out right after my Mom died from cancer. We had a service for my Mom the night before the Witch Creek fire in 2007. The day of the fire, we we evacuated from Ramona, CA to the Escondido mall. By morning the flames had reached the mall. Had to drive our separate vehicles down the I15 to get Grandparents to the airport. We drove through flames and smoke around Mira Mesa. Fire jumped the freeway. Walkie talkies came in handy to communicate between cars. About a million people were evacuated so cell phones didn’t really work at the time with use prioritized for emergency services. Spent some time sleeping in car in a Lemon Grove church parking lot. Had to. Red Cross showed up and booked all the Holiday Inn rooms in the county. Couldn’t get a motel. Finally got a motel in Chula Vista. Took us 5 days to be allowed back home. When we got home, water was shut off for about another week. The water department’s primary and backup systems failed and had to wait for parts to fix before water could be turned on. When it was finally turned on, they started shutting it back off because there wasn’t enough pressure. When we finally had water, it was green from a double dose of chlorine. All the stores donated their bottled water so you couldn’t buy it anywhere. You could only go where it was being handed out and rationed. Most of the power lines were burned down so some around town had to wait 2 weeks for power to be restored. We were fortunate to still have a home to come back to. Many weren’t so lucky.Good list HOF. Thoughts coming from one who actually had to bug out is meaningful.
Lessons learned: Have the ability to be mobile and adapt to a changing situation. People trying to help people can cause bottlenecks and shortages that can make your situation worse. Don’t rely on help actually helping you. Expect everything to go wrong, plan ahead, but be able to work things out when your plan fails. When things go wrong expect problems with water, power, communications, fuel, and transportation.
Great visual on wiring K..
add; What kind of runtime w/ normal daily usage?
+The system is 24 Volts. Each battery is 6V so 4 are in series with 3 series in parallel. The small bundle of cord upper left in the box is extra length for the temperature compensation sensor. This is to optimize the charging profile depending on the ambient temperature. Though AGM batteries do not vent nearly as much as standard lead acid, the box still needs to be ventilated, with the fan turning on when the brains of the system detects charging.
If a person purchases quality batteries, and limits discharge depth, they will last longer than standard specifications advise. We run a 350+ feet deep water well, satellite internet and the basic stuff that modern life offers, but we do not waste, other than not really worrying about son leaving the bedroom and bathroom LED's light on. The aquarium heater is about 35 watts. It can add up but this system, and our mostly sunny climate (said to have more than 300 sunny days a year in nearby Albuquerque) usually gets less than 20% discharged a night. Really, when we get 3 days of clouds, using the old busted up generator is more for being gentle on the battery bank (more than 30% discharged) than any real need. We will also refrain from using the modest big screen TV during those cloudy times. We do have a 1500 watt electric heater in the bathroom, an induction cooktop, and a medium sized toaster oven but use an old school 2 slice toaster for bread.
WAY too much information but wanted to convey that many things about our family are normal. Local solar and electrical storage are not without environmental cost and expense. A backup generator can make a lot of sense for stopgap measures, but it is hoped that more people will adopt distributed energy production and reduce the significant line losses, as well as other factors related to the bureaucratic monopoly so many people are living under now.
I've pondered solar for more than a decade, but the payback in my region for solar is questionable with all the weird conditions, fees, and exceptions imposed by the distribution companies. And all the advertising is making impossible claims about performance - both in terms of generation and financials.Local solar and electrical storage are not without environmental cost and expense. A backup generator can make a lot of sense for stopgap measures, but it is hoped that more people will adopt distributed energy production and reduce the significant line losses, as well as other factors related to the bureaucratic monopoly so many people are living under now.
Looks like about 1000W of panels. Smallest array I've pondered for my place is ~4kW DC, which should handle winter loads under the blithe assumption the distribution company doesn't require something asinine like two meters and plays accounting shell games with production credits.Interface with the source of all physical life. Perhaps less than some thought?
Not if you have a VFD compressor. They are becoming more and more common. With a clamp-on meter, I see virtually no start-up surge on my mini-splits (20 and 24 kbtu). I know, relatively small capacity, but still -- no surge. In addition, my bionic surge meter (ear) detects less bogging of the genset beyond what would happen when switching on a steam iron or electric griddle. The other advantage, of course, is that with a relatively small genset, you can judiciously choose a limited number of indoor units to run and stay reasonably comfortable in a room or a few rooms without cooling the whole house.Of course for the portable generator route you're going to want a soft start for any HVAC compressors