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Old 01-18-2013, 06:40 PM   #46
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DIY interlock for generator


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Originally Posted by khfactor View Post
I had to DREMEL cut the piece of metal (on the Dead Cover) between the Main Breaker and the Generator Breaker, otherwise the interlock "feature" of the KIT would not work. How many of you all had to do what I did, I am wondering....
While mine is a different version of that interlock, I didn't have to cut any sheet metal. Just hold the main breaker interlock out of the way when you put the cover on. Both interlocks clear the panel cover easily.

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Old 01-18-2013, 06:43 PM   #47
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DIY interlock for generator


Post the model number of the interlock.
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Old 01-18-2013, 06:49 PM   #48
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DIY interlock for generator


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Originally Posted by rrolleston View Post
How did you upgrade to 225 amp without upgrading the service cable?
I'm wondering the same thing. My guess is it doesn't matter to him.
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Old 01-18-2013, 06:51 PM   #49
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DIY interlock for generator


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Post the model number of the interlock.
It is a ECSBPK03, I think...
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Old 01-18-2013, 06:51 PM   #50
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DIY interlock for generator


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Note the small sticker on the kit that said, "UL LISTED". I guess this is why Siemens can demand and fetch $50 for a lousy small piece of metal.... Tse.. tse..


Wow! Classic.
"Lousy small piece of metal". It's not like there is any engineering going on there, or any manufacturing or anything.
It's just a lousy small piece of metal.
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Old 01-18-2013, 07:01 PM   #51
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DIY interlock for generator


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I'm wondering the same thing. My guess is it doesn't matter to him.
The electrician who did the swapping said the main feed wiring on the old 200A Service panel was suitable for the 225A.
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Old 01-18-2013, 07:09 PM   #52
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DIY interlock for generator


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The electrician who did the swapping said the main feed wiring on the old 200A Service panel was suitable for the 225A.
It's not.
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Old 01-18-2013, 07:10 PM   #53
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DIY interlock for generator


A 225A residential service needs either 3/0CU or 250mcmAL. Yours like typical 4/0AL to me.
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Old 01-18-2013, 07:31 PM   #54
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DIY interlock for generator


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It's not.
Never ceases to amaze me what some electricians will do. I had a customer all pissed off at me because the person they had install a generator backfeed with no interlock and the electrician said it was ok. And they also used a GFCI breaker. I will be prepared to charge a good fee when they find out that backfires and need power in a power outage. Especially since their 30k reverse osmosis system would be at risk of freezing.
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Old 01-18-2013, 10:00 PM   #55
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DIY interlock for generator


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Just FYI. If you get the interlock kit made by your panel manufacturer, the cost is far lower than the interlockkit ones. The Square D QO2DTI, for example, retails for $28.39. So by the time you add up the labor and materials making an illegal interlock, it would be faster, cheaper, and easier to just buy the legal one.
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I googled this and found it just prevented two adjacent breakers from being on at the same time.
Not what the OP wanted at all.
They do make them, but they are over $100.
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Old 01-18-2013, 10:05 PM   #56
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DIY interlock for generator


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I googled this and found it just prevented two adjacent breakers from being on at the same time.
Not what the OP wanted at all.
They do make them, but they are over $100.
It works for panels when the main breaker is right across from the generator breaker.
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Old 01-19-2013, 06:33 AM   #57
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DIY interlock for generator


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I googled this and found it just prevented two adjacent breakers from being on at the same time.
Not what the OP wanted at all.
They do make them, but they are over $100.
True. The OP wanted to hack together something that someone's life may depend on. NOT a good idea.
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Old 03-21-2013, 11:50 AM   #58
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DIY interlock for generator


Been a while, I am the OP. I have my list of materials and was just waiting for hurricane season to purchase them. Waiting and thinking.

Near my back door are two recepticles, each on different power bars, #12 and #18 breakers. If I wheeled the 4000 watt generator up close to them, used two 14 ga 120v suicide wires to power those circuits, could I accomplish the same thing as my interlock plan, electrically? Obviously it would be somewhat less safe because I would have to remember to plug in the wires and open the main power breaker before starting the generator.

Are there any other differences in these two approaches?

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Old 03-21-2013, 12:05 PM   #59
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DIY interlock for generator


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Originally Posted by puttster View Post
#12 and #18 breakers.
What's a #18 breaker? Breakers come in 15A, 20A. Wire comes in 14ga, 12ga. 18ga is too tiny for electrical wiring.

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If I ... used two 14 ga 120v suicide wires to power those circuits, could I accomplish the same thing as my interlock plan... I would have to remember to plug in the wires and open the main power breaker before starting the generator.
An interlock forces you to turn off the main before backfeeding your generator. If you have to "remember" to do it, that's the exact opposite of an interlock.

Suicide cords and "remembering" are illegal and dangerous. The only way you can be safe and legal is to use a UL-listed interlock (or transfer switch) and a generator inlet. Not sure what else there is to discuss at this point, unless you need help selecting and installing your UL-listed interlock and generator inlet.
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Old 03-21-2013, 12:10 PM   #60
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DIY interlock for generator


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Originally Posted by tylernt View Post
What's a #18 breaker? Breakers come in 15A, 20A. Wire comes in 14ga, 12ga. 18ga is too tiny for electrical wiring.

An interlock forces you to turn off the main before backfeeding your generator. If you have to "remember" to do it, that's the exact opposite of an interlock.

Suicide cords and "remembering" are illegal and dangerous. The only way you can be safe and legal is to use a UL-listed interlock (or transfer switch) and a generator inlet. Not sure what else there is to discuss at this point, unless you need help selecting and installing your UL-listed interlock and generator inlet.
I think he means the breaker numbers in his panel, not the rating or wire size

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