Generator - 110V vs. 120V plugs

I own a restaurant. A couple weeks ago, we had a very bad storm that knocked the power out. I purchased a portable generator to hook up a couple coolers and freezers. I plugged one freezer in, and when I went to go plug one of the coolers in (trying to do all of this in the dark) and the plug did not fit into the extension cord. I look down and the plug is a 120V plug with one of the prongs turned horizontal. Needless to say I was rather upset that I did not notice this before hand. Now, so I can prepare for this in the future, do extension cords even exist like this? If not, would it just be easier or even safe/possible to just replace the plug on the cord from the cooler with a 110V plug?

Thanks for any help!
Zach

 

This is a 120 volt plug but it is a 20 amp plug, not a typical 15 amp plug and requires a 120 volt, 20 amp receptacle. Whether you can find a cord like this is not something I know off the top of my head.

 

The plug with the "sideways" blade is for a 20 ampere, 120 volt appliance. (There is no "110" volts unless you really live far back in the sticks, it is all 120 volts nominal and has been for at least fifty years.)

Yes, 20 ampere extension cords DO exist but you won't find them at the local
DIY mega-mart. You will probably have to go to a contractor supply house or perhaps electrical supply house. Be prepared to spend some serious coin.

 

Does your generator have a 20a receptacle? You can make your own cord but if you don't have a 20 amp 120v receptacle (NEMA 5-20R) on the generator then your out of luck. What is the output of your generator in watts? Is there a 30 amp 120v receptacle or a 4-wire 240 volt receptacle?

 

Good advice from Ray. You can pick up a 20 amp exension cord end at any Lowes/ HD. I would use at least a 12 guage extension cord.

 

Gotcha, sorry for my stupidity in mis-wording the question. :-) Yes, the generator has a 20A outlet. It has 7,000 running watts and 8,750 start up.