interlock switch for generator backfeeding panel

   / interlock switch for generator backfeeding panel #1  

GeneV

Elite Member
Joined
Aug 19, 2019
Messages
3,005
Location
Lake County, IL
Tractor
Bradley 48" stander MF GC1710
PXL_20220831_212611963.jpg PXL_20220831_224457965.jpg PXL_20220831_225450817.MP.jpg IMG_20221004_132754.jpg IMG_20221004_161933 (1).jpg IMG_20221004_164314.jpg
 
   / interlock switch for generator backfeeding panel #2  
I guess you are showing the lockout for generator/line feed on your panel. That system is very simple and has been marketed for awhile. Simple enough to DIY, providing you know what you are doing electrically!
 
   / interlock switch for generator backfeeding panel
  • Thread Starter
#3  
Oh yeh, it was super easy. The only thing that stumped me was what to do with the zip ties in the kit, instructions weren't all that clear. I had to google that, turns out it's code, you gotta anchor your generator breaker to the panel and put a warning sticker on there. So zip tying it to the neighboring breakers (1&3 position) counts as that.

I still gotta do a quick thing to my generator, I got a bonded neutral on there, so gotta take care of that. And also make a bonded-neutral plug for when I wanna use the generator for other stuff.
 
   / interlock switch for generator backfeeding panel #4  
Looks the same as the one I installed on my breaker box. Easy to install and pretty foolproof. I've used it a couple of times so far.
 
   / interlock switch for generator backfeeding panel
  • Thread Starter
#5  
Actually, the only problem I had was with the inlet box. Ordered on Amazon per reviews, ok seems a winner. So Install that thing, go to plug in my generator cord, and it won't twist lock. I finally figured out that there's a lip in there that decreases the ID at the bottom, just enough that a standard L14-30 plug won't fully seat to twist lock. Evidently only a molded plug (which they sell) will fit in there. So, I raised a stink about it, got them to send me a free plug...and meanwhile, Amazon also refunded me for the inlet box.
 
   / interlock switch for generator backfeeding panel #6  
Actually, the only problem I had was with the inlet box. Ordered on Amazon per reviews, ok seems a winner. So Install that thing, go to plug in my generator cord, and it won't twist lock. I finally figured out that there's a lip in there that decreases the ID at the bottom, just enough that a standard L14-30 plug won't fully seat to twist lock. Evidently only a molded plug (which they sell) will fit in there. So, I raised a stink about it, got them to send me a free plug...and meanwhile, Amazon also refunded me for the inlet box.
Oh, that's sneaky. I got one from home depot, it fits a normal twist lock plug.
 
   / interlock switch for generator backfeeding panel #7  
Nice job! I want to do that but can't find a lockout to fit my vertical main breaker. And I don't want to go through changing out the whole box and breakers. How do you know when service has been restored? I was planning on adding an indicator light on the service feed side. I have an of old neon bulb I could wire in. (I have a cutoff at my service pole before it goes underground.)
 
   / interlock switch for generator backfeeding panel
  • Thread Starter
#8  
Nice job! I want to do that but can't find a lockout to fit my vertical main breaker. And I don't want to go through changing out the whole box and breakers. How do you know when service has been restored? I was planning on adding an indicator light on the service feed side. I have an of old neon bulb I could wire in. (I have a cutoff at my service pole before it goes underground.)
One should be out there if you got a normal name-brand panel. Try here to find one that fits yours: Interlock Kit & Accessories For Your Home | Generator Interlock Kit

To check if your power is restored, flip off all your breakers, flip off the generator breaker. Then turn on your main, and flip on some breaker to check if the lights are on.
 
   / interlock switch for generator backfeeding panel #10  
Nice job! I want to do that but can't find a lockout to fit my vertical main breaker. And I don't want to go through changing out the whole box and breakers. How do you know when service has been restored? I was planning on adding an indicator light on the service feed side. I have an of old neon bulb I could wire in. (I have a cutoff at my service pole before it goes underground.)

I can tell the power is restored when the LCD display comes back on at the meter.
 

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