How do I calculate home electrical load?

Add the wattage of all major appliances and divide by voltage (240V for US service) to get total amps. A typical home uses 100-200 amps.

Do I need a 100 amp or 200 amp panel?

Most modern homes need at least 200 amp service. 100 amp is sufficient only for small homes or apartments without electric heat, large AC, or EV charging.

How many amps does a typical house use?

Average US home peak demand is 100-150 amps. Homes with electric vehicle charging, electric heating, and large AC systems may need 200-400 amps.

What is demand factor in electrical load calculation?

Demand factor recognizes that not all loads run simultaneously. NEC Article 220 allows applying demand factors to reduce calculated load for large dwellings.

How much does it cost to upgrade from 100 to 200 amp service?

Upgrading from 100A to 200A electrical service typically costs $1,500-$4,000 depending on location, the need for utility work, and whether the meter base needs replacement.

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