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Discussion Starter · #1 ·
I want to install a portable generator with an interlock switch on my main panel. However, my main panel does not have a main switch to it because I have a disconnect panel outside by the meter.

Is there any harm in installing a main switch in my indoor panel so I can then install an interlock switch? It would mean I have two main switches on the same system.
 

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If you are asking can you install a main breaker in your panel so you can do an interlock, the answer is yes.
Can you panel have a breaker installed depends on the brand and model.
 

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Discussion Starter · #3 ·
If you are asking can you install a main breaker in your panel so you can do an interlock, the answer is yes.
Can you panel have a breaker installed depends on the brand and model.
Oh, yeah the panel can accept a main breaker — the cutout is there.

I was asking more about code and if there is an issue in having two mains in sequence.
 

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If you are asking can you install a main breaker in your panel so you can do an interlock, the answer is yes.
Can you panel have a breaker installed depends on the brand and model.
No code issue. I always install sub panels with a main breaker. For one reason, it's safer to work on knowing the main is off and right in front of you.
 

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Oh, yeah the panel can accept a main breaker — the cutout is there...

Best to double check and not just go by if the panel has a cut out (punch out). I have seen some manufacturer's of panels use a generic cover that would be used for several of their model panels where the panel cover has a punch out but no breaker spot available.


If you are comfortable taking off the panel cover do so carefully and just verify that their is a spot for a main breaker.


Just a heads up for you.
 
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