Definition
The measure of electrical current flow indicating your home's total electrical capacity. Modern homes typically have 100-200 amp service; older homes may have 30-60 amps.
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Amperage determines how much electrical power a home can use simultaneously. A 100-amp panel provides adequate power for basic appliances and heating in smaller homes. A 200-amp panel supports modern homes with electric heat, air conditioning, electric vehicle chargers, and multiple simultaneous loads. Insufficient amperage leads to frequent breaker tripping and limits capability. Upgrading service requires utility company coordination and significant expense. Inspectors note amperage and assess adequacy for the home's size and systems.
Pro Tip
Verify your home's amperage rating and assess if it's adequate for your needs.
Example
A 1970s home in Colorado had 100-amp service. When the homeowner installed central air conditioning, the HVAC load combined with other appliances caused frequent breaker tripping. The electrician upgraded the service to 200 amps, costing $3,500, enabling reliable operation of all systems.