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Household Electrical Circuits
110 Volt and 220 Volt
Understanding Electrical Circuits and Standard Household Voltages
When discussing any type of electric heat you are generally dealing with high voltage and care must be taken to avoid working with high voltage appliances while they are energized. Always turn off the power and always check for voltage with an appropriate electrical meter to be sure all power is off.
Another note is that you may be dealing with more than one power circuit for an electric furnace so be sure to check everything. The electric furnace is supplied with 220 volt AC to power the electric heating elements inside the furnace. On most electric furnaces this also powers the blower motor. 220 Volt AC is best described as two 110 Volt circuits utilized together or combined to provide a higher voltage. Most electric driers, stoves and water heaters are powered using 220 Volt circuits.
Like all electrical systems the basic thing to understand is that the circuit must be complete in order for the electricity to flow and do work. A simple example would be a standard light bulb which we all understand as having a filament inside that heats up and glows when energized with power and when the filament breaks the light bulb no longer works. Electrical circuits are exactly the same, if any part of the circuit is broken the electrical power ceases to flow. Hence that is exactly what a light switch does, it breaks the circuit (also called an open circuit) so electricity cannot flow to the light bulb.On standard 110 volt circuits this completed circuit (also called a closed circuit) is from the hot wire (normally black or red) through to the neutral or common wire (normally white) and to check this circuit you would read or check the resistance of the circuit with a multimeter from the hot side to the neutral side. The 220 Volt circuit is different in that the this is no longer true, the two 110 volt hot circuits (normally black and red) are combined to make 220 volts and the circuit is completed (again a closed circuit) when the two separate 110 Volt circuits are complete, no neutral ever really comes into play. So in this case you would be reading or checking the circuit through the two separate hot sides of the circuit.
WARNING: Electricity is dangerous and can cause serious injury or death, always assume electrical power is on unless you have checked it with an appropriate meter. Never work on live electrical wires always turn off the power at the circuit breaker. Ameri-Serv, Inc. assumes no liability for the use of the information provided on this website.
SAFETY FIRST!
These easy to understand HVAC maintenance tips are for common tasks that
almost any homeowner can perform. Please do not perform these tips if
you are not comfortable performing
them. Electricity is dangerous and can cause serious injury or death,
always assume electrical power is on unless you have checked it with an
appropriate electrical meter. Understanding Electrical Circuits and Standard Household Voltages Heating and Air Conditioning Equipment have many moving parts such as fans and other devices, Always stay clear of fans and other moving parts as they can start at any time. Many electrical heating equipment operate at high voltages. All gas equipment and many other types operate using either natural or propane gas or fuel oil, always use extreme caution when working with flammable sources. It is always required to secure the power and gas or oil off to any equipment or appliance before performing service or repairs. Ameri-Serv, Inc. assumes no liability for
the use of the information provided on this website. Please always use common sense and make sure the electrical power is off before opening and accessing the inside of any equipment or appliance. Reaching into anything with electrical or moving parts can result is serious injury. Remember Safety is Always First
ASI's HVAC and Home Improvement Articles Green Technologies in our Homes... Radiant Barriers One of the latest green concepts is very controversial and many people have different opinions about the advantages and disadvantages. While the energy savings it can provide are very good the down side is that it could lead to problems. Green Technologies in our Homes - The "Green" Living Wall The idea of a living wall or green facade is as old as architecture itself, prominent in Europe and many other countries around the world. Everyone has seen buildings and homes covered in ivy and while this is literally a living wall, it is apparent that the motivation to allow the ivy to grow was not energy The Geo-Thermal System Explained in a Nut Shell Geothermal is by far the highest efficiency heating and cooling system available today. While the systems require up to three times more investment upfront than a conventional heating and cooling system... Ameri-Serv, Inc. Heating and Cooling News Ameri-Serv Inc Helping the Treasure Valley Community Ameri-Serv, Inc. Heating and Cooling has successfully helped dozens of Treasure Valley Families with thousands of dollars worth of free maintenance services and repairs through this holiday... |
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Breaking News: The Cost to Repair your old Air Conditioner just Skyrocketed
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Copyright 2011. ASI Heating and Cooling a Division of Ameri-Serv, Inc. All rights reserved
13601 W McMillan Rd Suite 102-120 Boise, Idaho 83713 Office (208) 342-4328 Fax (208) 906-1282
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Copyright 2011. ASI Heating and Cooling a Division of Ameri-Serv, Inc. All rights reserved