Plain answers about the panel behind every home electrical upgrade: what it can carry, how that is checked, and what to do when it cannot, from a licensed C-10 electrician in Lodi.
Each guide answers one question homeowners in the Sacramento and San Joaquin area ask before an electrical project, with its sources listed and its limits stated.
A load calculation is the right first check on a panel, and it has blind spots: panel condition, the busbar, solar, metered data and the circuit itself.
The calculation California makes a contractor certify sizes the heat pump, not the panel.
An EV charger, a standby generator and a new air conditioner all end at the same box. Whether that box can carry them is a calculation, and it belongs at the start of the project, not the end.
Talk to Craig before you buy the equipment. The load calculation comes first, and it tells you whether the panel you have is enough.