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Can a 220 Volt well motor be added to a 200 amp box or does it need its own box?
The well pump breaker is installed in two slots in your breaker box. You then run the correct size cable for the amperage of the pump to the area where the pressure tank is located. install a breaker or disconnect on the wall near the pressure tank and then connect the low pressure switch to the disconnect. Connect the pump to the low pressure switch.
Cost to install 1200 Amps Circuit Breaker?
1200 Amps is a huge breaker. Typical houses might have between 100 and 200 Amp service. Since this would have to be a very unique installation you would have to provide a lot more information before cost could be computed. You also have to indicate who is supplying the breaker which would be a significant cost on its own.
Gauge wire needed for 8 amp sump pump?
you will need wiring that is at least 10 amp rated wire or higher. If you really needed to ask you might want to call an electrician Electrician here, be the pump 120 volts or 240 volts a #14 wire will handle the situation. Longer runs of 75 feet you should go to a #12 wire to compensate for voltage drop. The pump should be on its own separate circuit with a 15 amp breaker. A two pole 15 amp breaker if the pump is 240 volts.
Can I wire nut two black wires together and hook 1 to a breaker?
Not according to the electrical code. It requires each separate circuit to be fed individually from its own breaker. If allowed it would reduce the total capacity of each circuit from one amp per outlet to a half amp per outlet if the circuit was fully loaded.The work around in situations like this is to use a tandem breaker which gives you the capacity of two complete circuits and only using one breaker slot in the distribution panel board.
Can you use wire nuts inside a main breacker panel or to extend a new to an old knob to romax to breacker to include 220 volts?
There should be no joints like that inside the breaker panel. I'm pretty sure the NEC, or in my case the Canadian Electrical Code prohibits having any wire nuts/marrettes in it. Any such joints should be done outside the breaker panel in it's own junction box.
