I want to make sure I have this right, as it will be inspected and I'd rather not have to redo anything.
Current service: 150A, panel is in an interior hallway and the main disconnect breaker is outside. Currently ~1150sf, 3BR, 2BA, gas appliances. Adding an in-law suite - ~768sf with an additional bath and kitchenette (gas appliances there, too).
Rather than running the new circuits all the way back to the current panel (an additional 40' of cable for each run), I'd like to install a subpanel in the new laundry room adjacent to the addition. It would service 4-6 20A breakers.
This is what I'm thinking:
New double pole 60A (type QP) from the house panel to something like the attached in the new laundry room
6/3 stranded copper Romex (<50')
Remove tie bar between ground and neutral in the new subpanel
Does that sound right? As mentioned, I'm pulling permits for all the work, so if there's something anyone thinks I should be aware of, feel free to let me know.
BTW: The existing panel is a Siemens, fwiw.
Thanks in advance!