Do i need to add the spare amp. for my main panel board breaker

Question

Current load - the breaker handling it

8.26A - 20A breaker

10.43A - 20A breaker

10.43A - 20A breaker

15.65A = 20A breaker

8.00A - 20A breaker

8.00A - 20A breaker

8.00A - 20A breaker

14.35A - 20A breaker

21.74A - 30A breaker

10.00A - 30A breaker

12.00A - 30A breaker

spare(estimated load around 10.43A) - 30A breaker

spare(estimated load around 10.43A) - 30A breaker

spare(estimated load around 10.43A) - 30A breaker

Load without the spare is @ 126.86A - so i should be getting a 125A main panel switch

Load with the spare is @ 158.15 - so i should be getting a 150A main panel switch

Answer 1

Plan for future expansion and go with a 200 amp main and service, also a 200 amp panel. The difference in price is minimal and you can add the extra circuits as needed in the future,

Answer 2

It's always best to get the biggest panel you can afford--but remember that you're assuming that everything is "hot" all the time, which it usually is not.

Answer 3

i don't believe you can buy a 150a main panel. but you can fuse a 200a disconnect at 150a to feed a 225a main lug panel.   panel sizes are 100a main breaker,125a main lug,200a main breaker,225a main lug,disconnects will be 30a,60a,100a,and i will stop at 200a,they come in fused and non-fused.fuses come in a lot of different styles ,shapes,amp ratings,voltage ratings etc.i know all this but i have no idea what your asking.how can something be a spare but also have a estimated load.