by 
The Curious Bag
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<h4 class="dechead">On One Hand: Power Amount
Sixty amp circuit breakers used to be the norm but are now only found in older homes as they do not put out enough power for modern electrical needs. The typical circuit breakers installed by contractors carry 120 amps of power. Other contractors, says RELECTRIC, choose to install 150 amp breakers as standard. You may need to update all breakers.
On the Other: Home Needs
The number of circuit breakers needed depends on the types of appliances and other power requirements in a home. Large appliances such as electric heaters and refrigerators require two linked 120 amp breakers while smaller appliances like dishwasher require only one. Between two and 20 wall sockets and lights can run off of one circuit breaker.
Bottom Line
There is no definitive expert opinion on the actual number of circuit breakers needed in a home, only on the standard amount of amps each breaker needs to put out. Both RELECTRIC and The Circuit Detective assert that 120 amps is sufficient for most standard homes.
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