Understanding capacity and therefore the load become necessary. if you’re planning to Install UPS, Solar System, or the electrical service for a replacement home, or if you’re considering an electrical service upgrade to an older home. Understanding the load needs will allow you to choose an electrical service with an appropriate capacity. In older homes, it’s extremely common for the prevailing service to be badly undersized for the requirements of all the fashionable appliances and features now in use.
What Is Electrical Load Capacity?
The term “electrical load capacity” refers to the entire amount of power provided by the most source of electricity to be used by your home’s branch circuits and therefore the lights, outlets, and appliances connected to them.
The total electrical capacity of electrical service is measured in amperage (amps). In very old homes with knob-and-tube wiring and screw-in fuses, you’ll find the first electrical service delivers 30 amps. In many homes built after 1960 (or upgraded older homes), 100 amps are the quality serving size. But in large, newer homes, 200-amp service is now as a minimum, and at the very top end, you will see 400-amp electrical service installed.
How does one know if your current electrical service is adequate, or how does one plan for a replacement electrical service? Determining this needs touch math to match the entire available capacity against the likely load which will be placed thereon capacity. (more…)