Connect generator L5-30R to home panel


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Old 04-26-21, 09:34 AM
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Connect generator L5-30R to home panel

I'm trying to connect my portable generator (Champion 100401) to my home breaker panel. It has a 3 prong 120v locking outlet on the front, so I made a cord with L5-30R ends to plug into the gen and an L5-30R external outlet for the house. I bought an interlock for my panel which will lock out two 30 amp breakers in the 2/4 slots.
My issue is this: The L5-30R is a 3 prong device labeled with a blk, wht, and grn. I am running 10/3 w/g cable from my panel to the outlet. Do I connect both blk and red wires from the cable to the blk outlet terminal so I can feed the two 30a breakers in my panel? I've seen videos of people jumping a 4 prong plug and outlet so they have two hot wires to the panel. Neither of these options seem right.
Do I just want to run the hot blk wire to breaker 2 , not use the red wire, and leave breaker 4 with no connection? Can I hook up a 3 wire out from my generator to my home system using an interlock safely? or should I give up and buy a L14-30R 4 wire 120/240v generator?
 
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Old 04-26-21, 11:37 AM
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Your first question should be "Can I do this legally?"
Second is "will my insurance pay off if something goes wrong?"
Many places require a transfer switch, and I wouldn't install a generator without one, even if it was legal to do so. Not everything that is permissible is smart.
 
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Old 04-26-21, 05:34 PM
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so I made a cord with L5-30R ends to plug into the gen and an L5-30R external outlet for the house.
So is this a suicide cord? Are both ends of the cord a male plug?
 
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Old 04-26-21, 06:03 PM
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You need to use a proper generator power inlet.
 
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Old 04-27-21, 09:49 AM
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Interlocks are often illegal, and even when they are allowed, they aren't a good idea. It's kind of like covering the windshield of your car with duct tape so no one will steal it. It would probably work, but there must be better ways.
 
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Old 04-27-21, 09:56 AM
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I found this video... https://www.youtube.com/watch?v=1yaPF4n01Sw and that's why I post here, cause I didn't realize it was dangerous to connect things that way. So, stupid me, thank you.
So I need to change my power cord to a male and female end and use a male generator inlet box to receive the gen power.

So, how do I deal with only having a blk, wht, and gnd from the generator and work with the two breakers in my electrical panel? I will have my interlock installed before use.
Edit: I think I found a source for the answer... apparently you connect to only one breaker and it will only feed half the panel.
 

Last edited by maarkr; 04-27-21 at 10:45 AM.
  #7  
Old 04-27-21, 05:26 PM
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You can feed both sides of the panel with 120V but you won't have 240V. You need to remember to disconnect all 240V loads before switching to the generator.
 
 

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