Quote:
Originally Posted by 4happyfeet
Porthole, it’s my understanding that not all three compressors can run at the same time. All three FANS can. That’s what the EMS controls.
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On 50 amp service all three AC's can run, continuously if needed.
Having all 3 compressors start at exactly the same time while other loads are active might put strain on the system. On really hot days I'll use slightly different temp settings on the AC's for cycling purposes.
The EMS only sheds on 30 amp (or 20 amp if selected) service.
On 50 amp or generator the load shedding is disabled. Although a typical 5500 Onan genset would have a hard time running 3 AC's. The EMS system 'assumes' full power is available and disables load shedding on the gen as well. The shedding is disabled whenever 240v AC is sensed or 12 volts DC from the generator hour meter is present.
We have an 8KW genny and there are times that unit struggles with 3 AC's and additional loads present.