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main breaker

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    Main Breaker box Wiring

    Hello Gentlemen Great Forum! Newbie to this place, not sure if am posting my question in the right section. I am attaching a pic showing wiring to the 220-240V main panel, my question is this the correct way of making these connections? I do feel something is missing here as I am confused with...
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    Need help choosing correct size main breaker for existing subpanel

    DIY homeowner here. I need advice, but will hire a pro if major rewiring needs to be done. I purchased a home with a 200amp service. There is a detached garage about 15’ from the house. I dont think the subpanel in the garage was wired correctly. There are currently three 4awg aluminum branch...
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    USA Wiring Mishap - Wondering How Much I Destroyed…

    I'm a DIY kind of guy, and was never really fond of household 120V/240V power before, until I had a friend who used to be a journeyman help me understand enough to wire up my house we are completely renovating. So, after putting some walls and trusses in place, and running conduit all day...
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    Why would the Main breaker trip?

    I recently installed a photovoltaic solar system for a customer but there seems to be a problem with on of the breakers. Here is a bit of context: The panelboard is a 100A main/125A bus 3ph 480V. The sum of the breakers is 120A (30,30,30,15,15) and each breaker is connected to an inverter. What...
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