The term "electrical load capacity" refers to the total amount of power provided by the main service for use by your home's branch circuits and the lights, outlets, and appliances connected to them. Understanding capacity and load becomes necessary if you are planning the electrical service for a new home, or if you are considering an electrical service upgrade to an older home. Understanding the load needs will let you choose an electrical service with an appropriate capacity. In older homes, it's extremely common for the existing service to be badly undersized for the needs of all the modern appliances and features now in use. But how much should you actually load each of the branch circuits to maintain a safe circuit load? How to determine the total safe amperage capacity to load the circuit.

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