House wiring - Revision history

DavidB4-bot: clean up & uniformity

2016-07-13T14:08:03Z

clean up & uniformity

NathanG: sp "typically", "isolator", "maintenance"

2008-02-18T20:59:20Z

sp "typically", "isolator", "maintenance"

Aziraphale: categorize

2007-07-16T23:34:55Z

categorize

Ed Poor: electricians

2007-05-19T13:45:06Z

electricians

Ed Poor: spell check - 2 errors corrected

2007-05-19T13:44:38Z

spell check - 2 errors corrected

BornAgainBrit: Europe exists too.

2007-05-19T13:41:06Z

Europe exists too.

BornAgainBrit: Its quite different for us euros, so I just clarified this article only describes US standards.

2007-05-11T12:59:01Z

Its quite different for us euros, so I just clarified this article only describes US standards.

Human: creation

2007-04-18T19:31:22Z

creation

New page

'''House wiring''' refers to the various electrical circuits in stalled in a home to enable the use of electrical appliances. The trained professionals who install and service these systems are called electricians.

It starts with a heavy [[American Wire Gauge|gauge]] [[wire]] "drop" from a nearby [[public utility]] pole (or buried wires in some neighborhoods), which first connects to a [[electric meter|meter]] to measure electrical use for billing purposes. This is in turn connected with heavy wire to a main service panel, where there will first be a main [[circuit breaker]]. The main breaker acts more as a switch than as a circuit protection device, and allows the de-energization of the wiring in the building so it can be worked on safely.

The main service panel contains 1, 2, or 3 metal busses to distribute the power to smaller circuit breakers, and ground and neutral lug bars. The ground bar is wired to a metal rod driven into the ground nearby. The individual circuit breakers then feed smaller wires that run to various places in the building. The breakers are sized to "protect" the gauge of wire used - for instance, in most modern house wiring, the typical circuit uses a 20 amp breaker and is run with 12 gauge wire. These 20 amp circuits will provide power to all the outlets and switched lighting in the house. The user should be careful not to overload these circuits, since a high [[current]] device (such as a hair dryer) could be plugged into each outlet, far exceeding the capacity of the breaker, and tripping it. Usually modern wiring systems distribute the circuits in such a way as to make this less likely.

Some [[appliance]]s have dedicated circuits, often with higher amperage breakers and heavier wire. Typical examples are electric clothes dryers, stoves, private well pumps, and air conditioning. A few appliances, while not needing higher current circuits, also require dedicated breakers, such as dishwashers.

Older systems are still found in use where [[fuse]]s take the place of circuit breakers. These usually do not allow sufficient overall current to provide for the array of modern appliances we now tke for granted, and so are upgraded as soon as the homeowner can afford it.

==See Also==

[[Building trades]]

@@ Line 13: / Line 13: @@
 ==Europe==
-European countries use a 230V, 50Hz standard for domestic power. The power cable entering a domestic property typically passes first through a tamper-evident high-current fuse. This serves both as a last-resort isolator, and a means to disconnect power from the consumer unit for maintenance. An earth or ground line comes in along with the power cables in most modern installations - older houses may take this from a water pipe, but this is being phased out. Following the fuse, both live and neutral cables connect to a tamper-evident power meter for billing purposes. The output of this meter is typically legally defined as the legal demarcation point between utility company and property holder ownership and responsibility.
+European countries use a 230V, 50&nbsp;Hz standard for domestic power. The power cable entering a domestic property typically passes first through a tamper-evident high-current fuse. This serves both as a last-resort isolator, and a means to disconnect power from the consumer unit for maintenance. An earth or ground line comes in along with the power cables in most modern installations - older houses may take this from a water pipe, but this is being phased out. Following the fuse, both live and neutral cables connect to a tamper-evident power meter for billing purposes. The output of this meter is typically legally defined as the legal demarcation point between utility company and property holder ownership and responsibility.
 Typically, the next component will be an isolation switch, allowing the property owner to disconnect power without breaking the tamper-evident seal on the company fuse. Often, this isolator is an RCB which automatically isolates in the event of a fault. It may be a physically separate box, or a component within a consumer unit.
@@ Line 19: / Line 19: @@
 The design of the consumer unit is similar to that of a US distribution system, with common terminal blocks for all neutral and ground wires and a single live rail which connects to all breakers. Depending on age and property size, either fuses or a consumer unit containing breakers may be used. This distributes power to each individual circuit. The number and classes of circuits can vary greatly, and typically include lighting and ring-mains. Newly connected outbuildings should be given their own circuit.
-==See Also==
+==See also==
 [[Building trades]]
-[[category:construction]]
+[[Category:Construction]]

@@ Line 13: / Line 13: @@
 ==Europe==
-European countries use a 230V, 50Hz standard for domestic power. The power cable entering a domestic property typicially passes first through a tamper-evident high-current fuse. This serves both as a last-resort isloator, and a means to disconnect power from the consumer unit for maintinance. An earth or ground line comes in along with the power cables in most modern installations - older houses may take this from a water pipe, but this is being phased out. Following the fuse, both live and neutral cables connect to a tamper-evident power meter for billing purposes. The output of this meter is typicially legally defined as the legal demarkation point between utility company and propertyholder ownership and responsibility.
+European countries use a 230V, 50Hz standard for domestic power. The power cable entering a domestic property typically passes first through a tamper-evident high-current fuse. This serves both as a last-resort isolator, and a means to disconnect power from the consumer unit for maintenance. An earth or ground line comes in along with the power cables in most modern installations - older houses may take this from a water pipe, but this is being phased out. Following the fuse, both live and neutral cables connect to a tamper-evident power meter for billing purposes. The output of this meter is typically legally defined as the legal demarcation point between utility company and property holder ownership and responsibility.
-Typicially, the next component will be an isolation switch, allowing the property owner to disconnect power without breaking the tamper-evident seal on the company fuse. Often, this isolator is an RCB which automaticially isolates in the event of a fault. It may be a physically seperate box, or a component within a consumer unit.
+Typically, the next component will be an isolation switch, allowing the property owner to disconnect power without breaking the tamper-evident seal on the company fuse. Often, this isolator is an RCB which automatically isolates in the event of a fault. It may be a physically separate box, or a component within a consumer unit.
-The design of the consumer unit is similar to that of a US distribution system, with common terminal blocks for all neutral and ground wires and a single live rail which connects to all breakers. Depending on age and property size, either fuses or a consumer unit containing breakers may be used. This distributes power to each individual circuit. The number and classes of circuits can vary greatly, and typicially include lighting and ring-mains. Newly connected outbuildings should be given their own circuit.
+The design of the consumer unit is similar to that of a US distribution system, with common terminal blocks for all neutral and ground wires and a single live rail which connects to all breakers. Depending on age and property size, either fuses or a consumer unit containing breakers may be used. This distributes power to each individual circuit. The number and classes of circuits can vary greatly, and typically include lighting and ring-mains. Newly connected outbuildings should be given their own circuit.
 ==See Also==

← Older revision		Revision as of 23:34, July 16, 2007
Line 22:		Line 22:

	[[Building trades]]		[[Building trades]]
		+
		+	[[category:construction]]

← Older revision		Revision as of 13:45, May 19, 2007
Line 1:		Line 1:
−	'''House wiring''' refers to the various electrical circuits in stalled in a home to enable the use of electrical appliances. The trained professionals who install and service these systems are called ~~electricians~~.	+	'''House wiring''' refers to the various electrical circuits in stalled in a home to enable the use of electrical appliances. The trained professionals who install and service these systems are called [[electrician]]s.

	== United States ==		== United States ==

← Older revision		Revision as of 12:59, May 11, 2007
Line 1:		Line 1:
	'''House wiring''' refers to the various electrical circuits in stalled in a home to enable the use of electrical appliances. The trained professionals who install and service these systems are called electricians.		'''House wiring''' refers to the various electrical circuits in stalled in a home to enable the use of electrical appliances. The trained professionals who install and service these systems are called electricians.
		+
		+	== United States ==

	It starts with a heavy [[American Wire Gauge\|gauge]] [[wire]] "drop" from a nearby [[public utility]] pole (or buried wires in some neighborhoods), which first connects to a [[electric meter\|meter]] to measure electrical use for billing purposes. This is in turn connected with heavy wire to a main service panel, where there will first be a main [[circuit breaker]]. The main breaker acts more as a switch than as a circuit protection device, and allows the de-energization of the wiring in the building so it can be worked on safely.		It starts with a heavy [[American Wire Gauge\|gauge]] [[wire]] "drop" from a nearby [[public utility]] pole (or buried wires in some neighborhoods), which first connects to a [[electric meter\|meter]] to measure electrical use for billing purposes. This is in turn connected with heavy wire to a main service panel, where there will first be a main [[circuit breaker]]. The main breaker acts more as a switch than as a circuit protection device, and allows the de-energization of the wiring in the building so it can be worked on safely.

@@ Line 5: / Line 5: @@
 It starts with a heavy [[American Wire Gauge|gauge]] [[wire]] "drop" from a nearby [[public utility]] pole (or buried wires in some neighborhoods), which first connects to a [[electric meter|meter]] to measure electrical use for billing purposes.  This is in turn connected with heavy wire to a main service panel, where there will first be a main [[circuit breaker]].  The main breaker acts more as a switch than as a circuit protection device, and allows the de-energization of the wiring in the building so it can be worked on safely.
-The main service panel contains 1, 2, or 3 metal busses to distribute the power to smaller circuit breakers, and ground and neutral lug bars.  The ground bar is wired to a metal rod driven into the ground nearby.  The individual circuit breakers then feed smaller wires that run to various places in the building.  The breakers are sized to "protect" the gauge of wire used - for instance, in most modern house wiring, the typical circuit uses a 20 amp breaker and is run with 12 gauge wire.  These 20 amp circuits will provide power to all the outlets and switched lighting in the house. The user should be careful not to overload these circuits, since a high [[current]] device (such as a hair dryer) could be plugged into each outlet, far exceeding the capacity of the breaker, and tripping it.  Usually modern wiring systems distribute the circuits in such a way as to make this less likely.
+The main service panel contains 1, 2, or 3 metal buses to distribute the power to smaller circuit breakers, and ground and neutral lug bars.  The ground bar is wired to a metal rod driven into the ground nearby.  The individual circuit breakers then feed smaller wires that run to various places in the building.  The breakers are sized to "protect" the gauge of wire used - for instance, in most modern house wiring, the typical circuit uses a 20 amp breaker and is run with 12 gauge wire.  These 20 amp circuits will provide power to all the outlets and switched lighting in the house. The user should be careful not to overload these circuits, since a high [[current]] device (such as a hair dryer) could be plugged into each outlet, far exceeding the capacity of the breaker, and tripping it.  Usually modern wiring systems distribute the circuits in such a way as to make this less likely.
 Some [[appliance]]s have dedicated circuits, often with higher amperage breakers and heavier wire.  Typical examples are electric clothes dryers, stoves, private well pumps, and air conditioning.  A few appliances, while not needing higher current circuits, also require dedicated breakers, such as dishwashers.
-Older systems are still found in use where [[fuse]]s take the place of circuit breakers.  These usually do not allow sufficient overall current to provide for the array of modern appliances we now tke for granted, and so are upgraded as soon as the homeowner can afford it.
+Older systems are still found in use where [[fuse]]s take the place of circuit breakers.  These usually do not allow sufficient overall current to provide for the array of modern appliances we now take for granted, and so are upgraded as soon as the homeowner can afford it.
 ==Europe==