I hope this forum is also for us non electricians trying to do it ourselves.

I have a house built in 1957 that I just had my electrical panel upgraded. I want to add TWO Amana AC/heater units that call for 230V / 20amp plugs. I want to run the lines outside the house from the box either along the wall or buried. I prefer to use electrical PVC as it's easier to work with. Here's my questions;
1. Do I need two separate breakers or can I use one with higher amperage?
2. If I can use a single breaker what wire should I use? Should it be a bigger gauge between the electrical box and the junction/split to the two units?
3. How deep do I need to bury the wire in California?

Thank you for your time!

Glen

 

You would run two dedicated circuits, one for each unit. The data plate will have the breaker and circuit sizes needed.

 

Two 240 circuits will leave you one spare space there.

Buried PVC needs to be 18" deep. Then neatest way to do the job is to bury the PVC right next to the foundation.

 

Will the receptacles for these two units be inside or out? If they will be outside I would recommend hard wiring them with an A/C disconnect outside.

 

They receptacles will be indoors.

Thank you for your answers.

 

I also noticed that the electrician used a dedicated 15 amp breaker just for my doorbell. Could I combine this wire with another breaker or must I waste one just for a doorbell? I'm trying to leave two open for later use.

 

If you're looking for real estate in your breaker box, you could replace a couple 20A breakers with a single pole tandem breaker.

 

Ahh, I never thought of that! Thank you!