(related?) - refrigerator on (living room), non-dedicated 15A circuit?

[user 246304]

Enjoying the discussion guys.

 

[day_trippr]

Oh, yeah, right. I think we all forgot about you there
So, whatcha gonna do then?

Cheers!

 

[whoaru99]

Perhaps a couple previous remarks I made bear some clarification or further detail.

When mentioned that breakers can handle high short term peaks then gave example of 100A for 1/2 cycle, the point to elaborate is the duration is not constrained to very short time 1/2 cycle.

Going again to the Square D QO example, the trip curve for 15A breaker shows 4.5x to 9x nominal rating (68A to 135A) for trip current at 1 second duration.

If you take that down to 1/2 second, it's 6x to 13x nominal rating (90A to 195A).

That's a lot of cushion for starting loads in residential/home appliance use case.

 

[user 246304]

Oh, yeah, right. I think we all forgot about you there
So, whatcha gonna do then?

Cheers!

Lol, no, this stuff eludes my brain but when I get the chance, I'd like to dig in and learn more. I ended up with the fridge outside, two mini-heaters on Inkbird, and the feed is an external outlet, on the LR circuit. So far, so good.

 

[whoaru99]

... So far, so good.

I'm all for learning, but when rubber meets the road whether the loading is OK or suspect/problematic, I suggest the comment above appears to answer the question from a pragmatic rather than academic perspective

 

[user 246304]

I'm all for learning, but when rubber meets the road whether the loading is OK or suspect/problematic, I suggest the comment above appears to answer the question from a pragmatic rather than academic perspective

Sorry, by "above," you mean your last post?

 

[whoaru99]

No, your words I quoted, "so far, so good".

 

[user 246304]

No, your words I quoted, "so far, so good".

Oh, OK, thanks.