# How to Change a Circuit Breaker From 30 Amps to 20 Amps?

Reducing the size of a breaker inside a main power panel from 30 amps to 20 amps is easier than increasing the size of a breaker. When a breaker is reduced in size, all or a portion of the existing...
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http://www.ehow.com/how_6454791_change-30-amps-20-amps.html

## Can I put 250 amps of branch circuits on a 200-amp main breaker?

There is no maximum number of secondary (branch circuit) breakers that can be installed in an electrical system. The secondary circuit breakers only protect the wiring of the individual branch circ...
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http://www.answerbag.com/q_view/2291171

## What is the best combo of volts to amps to kill pernicious weeds like thistles with a cattle prod type device as a 50k taser doesn't work due to ultra low amps?

Volts and amps are linked by a mathematical principle known as Ohm's law. Ohm's law states that V=IR where V is voltage, I is current (amps) and R is resistance. In general, biological systems are ...
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http://wiki.answers.com/Q/What_is_the_best_combo_of_volts_to_amps_to_kill_pernicious_we...

## How to Calculate Amps in a Parallel Circuit Through Each Resistor?

Calculating amperage or current through parallel resistors is no different from calculating the current through a single resistor. Knowing the ohmic value of the resistor and the voltage dropped ac...
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http://www.ehow.com/how_8479403_calculate-parallel-circuit-through-resistor.html

## How do I Convert Amps Per Square Decimeter to Amps Per Square Foot?

Amps per unit of area measures the density of the electric current. Sometimes the electric current may be measured in amps per square decimeter, and other times it may be measured in amps per squar...
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http://www.ehow.com/how_6830355_do-amps-per-square-foot_.html