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If a home has 100A service and the main's fused at 100A each can the total of the circuit breakers inside the service panel exceed 100A?

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Yes. Five 20 amp breakers would be 100 amps. It doesn't work that way. The load placed on this box at any given time cannot exceed 100 amps. You can put as many breakers as it will hold.
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If the service panel you have 100A service can you install a 100A circuit breaker in the original panel to feed another 100A add-on panel?

DO NOT FOLLOW THE INSTRUCTIONS BELOW! According to this logic, one could chain an infinite number or sub-panels off of a single one hundred amp feed. The second law of thermo

Are there 100A available on both bars of a 100A panel in a home and for instance can you draw 75A on each bar?

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How many circuit breakers can be added to a 100A electrical box?

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When did builders start installing 100A service with breakers in new constructions in Minneapolis Minnesota?

  Answer     I don't know anything about Minneapolis except that it's cold, but anything under 100 Amps is normally inadequate for an average home. Therefore, t

What gage wire is required for a 60A sub panel off of a 100A main service?

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Average Cost of upgrading to 100A service?

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Considering 100A 240V service has 2 poles at 100A each is the total usable power actually 200A at 120V?

No, amperage is not additive, but a constant. Think of power as water, its always the same temperature, hot (amps). The pressure is variable (volts). The true answer is undoub