Generator. Which receptacle to feed power to panel?
I just picked up a Master MGY500C generator. This is an older, low hour unit powered by a genuine Yanmar diesel. 5,000W rated / 6,500 surge.
First off, I do plan to have an electrician install everything. My questions are more around understanding the capabilities and limitations of my generator. I do have a cutler interlock panel cover and plan to have an electrician wire it up for me. However, I did have a question as I notice something that seems odd about this model.
It has a "Full Power Selector Switch" which the manual indicates sends either full power to the 120v receptacles or full power to the 120/240v receptacle with wattage capacity to the 120v receptacles.
Here is the odd part. The 120/240 volt receptacle is only a 20 amp twist lock (NEMA L14-20P) while the other 120V receptacle is 30 amp (NEMA L5-30P). Why would the 240 receptacle be lower amps? Normally I thought the 240V connector would be the higher AMP one. The generator spec is 41.7 amp at 120 volt which makes the max 20 amp connector seem even odder to me?? Most important, I thought the 240V connector is what you would usually feed into the panel? In this case should I be using the 120V?? Am i getting the generators full capacity if i use the 240? What am I losing by doing so?
Rated Wattage* 5000
120 Volt 41.7
240 Volt 20.8
120-Volt, 15-Amp Duplex Yes
120-Volt, 15-Amp GFCI Yes
120-Volt, 30-Amp Twist-Lock Yes
120/240-Volt, 20-Amp Twist-lock Yes
120-Volt Full-Power Switch Yes
This post was edited by Amphicar770 on Sun, Dec 9, 12 at 8:22