enblethen wrote:
When powering an off-grid system there is many things to consider.
Need to get calculations on what is going to be connected. That would give basics for size of genset.
Some cabins are powered with only a 120 volt source and others install a 120/240 volt source.
We don't know what he is doing!
OP posted this..
tonyclifton wrote:
My goal; is to power both legs of the building circuit, although selectively powering certain breakers to manage load. I turn off high draw circuits like heat pump, water heater, sewage pump, range. What type of generator output / receptacle will do this as I shop for a replacement generator? I know this unit is getting old although has been a rock solid runner ever since I bought it based upon extensive reviews here.
Seems pretty clear to me what the OPs objectives are.
"My goal; is to power both legs of the building circuit, although selectively powering certain breakers to manage load. I turn off high draw circuits like heat pump, water heater, sewage pump, range."So, assuming that OP is attempting to setup an emergency backup power system on a on grid home they are planning to selectively enable only the circuits they need and disable the circuits they do not need to power via gen.
The OP does not say exactly how they are feeding the gen into the panel, hopefully it is through an breaker interlock assuming it is on grid home but once again, not really mine or anyone elses business.
The reality however is #1, the OPs current gen cannot supply 120/240V of sufficient current level to run their microwave.
The OPs gen IF switched to 120V only operation and the RV 30A outlet is used could/should power the microwave but will not power both L1 and L2 of the breaker panel due to the possible 240V only devices that may be connected to the breaker panel.
OP could however since they indicated they have an inverter microwave try running the microwave at a reduced power level. Inverter MWs do not PWM modulate the magnetron , instead it reduces the voltage level to control the output to the magnetron. OP could try 50% power level and then work up to 100% until the gen stops..
