QO question - bolt vs plug

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This is the sneaky stuff one needs to learn to be successful :) Thanks
We electricians have to get good deals on little things here and there, HVAC guys have it easier. Talked to one yesterday that I worked with on a past project and he and others that were there were talking about bidding high on projects they did not want to hopefully not get the job. He said he threw in enough extra on this one job he didn't want to cover a new fancy sports car for the wife, and still got the job. I can't seem to get away with that kind of thing, especially for residential or light commercial projects.
 
We electricians have to get good deals on little things here and there, HVAC guys have it easier. Talked to one yesterday that I worked with on a past project and he and others that were there were talking about bidding high on projects they did not want to hopefully not get the job. He said he threw in enough extra on this one job he didn't want to cover a new fancy sports car for the wife, and still got the job. I can't seem to get away with that kind of thing, especially for residential or light commercial projects.

An EC I worked for did the same thing. From what I understand they did work for a bunch of schools. They were asked to bid one two hours away from home base. They bid it really high hoping they didn't win but got it any way. I spent several days sitting in the passenger seat of the truck two hours in each direction. This was before smart phones with internet, so really boring.
 
An EC I worked for did the same thing. From what I understand they did work for a bunch of schools. They were asked to bid one two hours away from home base. They bid it really high hoping they didn't win but got it any way. I spent several days sitting in the passenger seat of the truck two hours in each direction. This was before smart phones with internet, so really boring.
This HVAC guy does schools, hotels, larger retail stores, etc, and travels to do a majority of those jobs. The somewhat local school that is a regular customer of mine is probably 150-200 miles away from his place of business. He put in all new heating/cooling in that school a year ago and was there yesterday doing some warranty stuff.
 
Just in passing I noticed that the breakers on the left have the top to the right and the single breaker on the right has the top to the left.
Is this OK/permissible?
 
Just in passing I noticed that the breakers on the left have the top to the right and the single breaker on the right has the top to the left.
Is this OK/permissible?

If I understand the question right, its not only permissible, its the only way you can install the breakers in this panel.

Do panels look different across the pond?
 
I had looked at is as the breaker on the right was the incomer.
But, looked at it again and possibly the supply is top centre.
 
I had looked at is as the breaker on the right was the incomer.
But, looked at it again and possibly the supply is top centre.
Supply in the OP is from the bottom, but that series of panel and most of them anymore for US market can be top or bottom fed.
 
When I hear someone say Square D bolt-in are for commercial and stab-in are for resi, I like to point out I've seen a lot of Square D I-Line (stab-in) panels in commercial applications.
 
When I hear someone say Square D bolt-in are for commercial and stab-in are for resi, I like to point out I've seen a lot of Square D I-Line (stab-in) panels in commercial applications.

Just a slight difference between the jaws of a QO breaker and an I-Line breaker;)

I have seen I line breaker to bus connection fail before, like anything else age gets it one way or another. One I am thinking of was probably at least 40-45 years old when it failed, probably didn't owe the owner anything anymore.
 
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