s*d
2 楼
意义何在？
l*g
3 楼
好看，气派
【在 s**********d 的大作中提到】
: 意义何在？
【在 s**********d 的大作中提到】
: 意义何在？
v*e
4 楼
Aluminum has higher expansion rates that Copper. Outlets and switches that
are not aluminum compatible will cause the wires to become loose and cause
fire. There are code requirements for aluminum compatibilities.
are not aluminum compatible will cause the wires to become loose and cause
fire. There are code requirements for aluminum compatibilities.
f*i
5 楼
自己干
买个soldering iron
http://www.amazon.com/Portasol-010589330-Super-125-Watt-Heat/dp
【在 o*******u 的大作中提到】
: 70年代的房子电线都是铝的，我看有人推荐把电源接口处的铝线接上一段铜，不知大家
: 都这样做么？有没有电工推荐一下？我在旧金山湾区。
: 谢谢！
买个soldering iron
http://www.amazon.com/Portasol-010589330-Super-125-Watt-Heat/dp
【在 o*******u 的大作中提到】
: 70年代的房子电线都是铝的，我看有人推荐把电源接口处的铝线接上一段铜，不知大家
: 都这样做么？有没有电工推荐一下？我在旧金山湾区。
: 谢谢！
o*u
6 楼
看网上有人用alumconn，好像每个电源接口、开关都要加上，是不是要请电工才行？
【在 v********e 的大作中提到】
: Aluminum has higher expansion rates that Copper. Outlets and switches that
: are not aluminum compatible will cause the wires to become loose and cause
: fire. There are code requirements for aluminum compatibilities.
【在 v********e 的大作中提到】
: Aluminum has higher expansion rates that Copper. Outlets and switches that
: are not aluminum compatible will cause the wires to become loose and cause
: fire. There are code requirements for aluminum compatibilities.
b*a
7 楼
铝铜混接有二极管效应，电线易发热
【在 v********e 的大作中提到】
: Aluminum has higher expansion rates that Copper. Outlets and switches that
: are not aluminum compatible will cause the wires to become loose and cause
: fire. There are code requirements for aluminum compatibilities.
【在 v********e 的大作中提到】
: Aluminum has higher expansion rates that Copper. Outlets and switches that
: are not aluminum compatible will cause the wires to become loose and cause
: fire. There are code requirements for aluminum compatibilities.
f*i
8 楼
详细说说？
我给你发个包子
【在 b*a 的大作中提到】
: 铝铜混接有二极管效应，电线易发热
我给你发个包子
【在 b*a 的大作中提到】
: 铝铜混接有二极管效应，电线易发热
s*d
9 楼
查了一下还真是这么干的。有两种方法，一种是 copalum,要专门的工具，
电工要有这个系统的license。另一种就是自己用配套的connector接，
不过好坏完全取决于电工水平。
电工要有这个系统的license。另一种就是自己用配套的connector接，
不过好坏完全取决于电工水平。
f*i
10 楼
自己的房子自己干，不需要license
【在 s**********d 的大作中提到】
: 查了一下还真是这么干的。有两种方法，一种是 copalum,要专门的工具，
: 电工要有这个系统的license。另一种就是自己用配套的connector接，
: 不过好坏完全取决于电工水平。
【在 s**********d 的大作中提到】
: 查了一下还真是这么干的。有两种方法，一种是 copalum,要专门的工具，
: 电工要有这个系统的license。另一种就是自己用配套的connector接，
: 不过好坏完全取决于电工水平。
s*d
11 楼
楼主不像有经验的。。。
自己干一般不要license，但是需要知道的还是都要知道，自己的安全问题。
【在 f****i 的大作中提到】
: 自己的房子自己干，不需要license
w*r
12 楼
ZKSS？
【在 b*a 的大作中提到】
: 铝铜混接有二极管效应，电线易发热
【在 b*a 的大作中提到】
: 铝铜混接有二极管效应，电线易发热
w*r
13 楼
这个是不是over kill了？
【在 s**********d 的大作中提到】
: 查了一下还真是这么干的。有两种方法，一种是 copalum,要专门的工具，
: 电工要有这个系统的license。另一种就是自己用配套的connector接，
: 不过好坏完全取决于电工水平。
【在 s**********d 的大作中提到】
: 查了一下还真是这么干的。有两种方法，一种是 copalum,要专门的工具，
: 电工要有这个系统的license。另一种就是自己用配套的connector接，
: 不过好坏完全取决于电工水平。
f*i
14 楼
俺仔细一想，显然不对
二极管需要两半导体材料，他说的应该是原电池反应，放在水里发生的。
【在 w********r 的大作中提到】
: ZKSS？
二极管需要两半导体材料，他说的应该是原电池反应，放在水里发生的。
【在 w********r 的大作中提到】
: ZKSS？
v*e
15 楼
http://www.home-inspectors.com/alumwire.htm
"Should I be concerned about a home containing Aluminium Wiring?"
ANSWER
Most electrical wire is made of copper. Copper is predominately used in
residential construction with the exception of the service cable and single
purpose high-amperage circuits such as sub-panels, electrical ranges or air
conditioners. Since copper is a better conductor than aluminum, the aluminum
wire must be larger to safely carry the same current as copper.
Some houses built or remodeled between the early 1950s and late 1970s were
wired with aluminum . This wiring can be identified by the letters AL or the
word ALUMINUM stamped on the plastic covering or cable. Don't confuse the
brand name ALCAN with solely aluminum wiring. Alcan makes both copper and
aluminum wiring for residential purposes.
There are basically three reasons why aluminum wiring may be of concern:
it has a tendency to oxidize which increases the wire's resistance
resulting in the wire overheating at the receptacle
it is more malleable (softer) than copper and therefore easily nicked
because of its high thermal expansion, it has a tendency to change shape
at the terminal screws and thus become loose or creep off
Given its incompatibility with fittings designed for other. metals in the
electrical system, improper connections may cause electrical resistance
which in turn may cause overheating and fire. To overcome the
incompatibility, the aluminum wiring may have been "pigtailed" with copper
using proper connectors, (Marrette-brown; Ideal-purple)
WARNING SIGNS OF UNSAFE ALUMINUM WIRING:
unusually warm or warped outlets and switch cover plates
smoke or sparks coming from receptacles and switches
strange odors in the area of receptacles and switches
untraceable problems with plug-in lights and appliances
periodic flickering of lights
CARE TO BE TAKEN WITH ALUMINUM WIRING:
Do not overfuse aluminum wiring. The AWG (American Wire Gauge) rating of
#12 aluminum wiring is equivalent to #14 copper wiring. Both are rated for
15 amps, so use only the t5 amp rated glass fuse, cartridge fuse or breaker
for aluminum wiring stamped either 12/2 or 12/3.
Copper and Aluminum should never be connected together except using
special anti-oxidant paste and crimped with approved clamp connectors. If
you use twist-on connectors (wire-nuts or marrets) make sure they are
approved for use with aluminum wiring.
When purchasing replacement receptacles, switches or fixtures ensure
that they are compatible for aluminum wiring. Typically, receptacles that
are approved for aluminum wiring will be stamped CO\.ALR, CU-AL or AL-CU
indicating they can be used for both copper and aluminum.
Do not use receptacles stamped with AL and a line through it. These
receptacles are incompatible with aluminum wiring.
As part of your preventive maintenance plan for the home, check switches
and receptacles by removing the cover plates and visually inspecting the
wires
for any signs of scorching, looseness, heat and/or odor.
Aluminum wiring is not handyman-friendly. If you suspect anything
unusual, have a licensed electrician work on circuits with aluminum wiring.
"Should I be concerned about a home containing Aluminium Wiring?"
ANSWER
Most electrical wire is made of copper. Copper is predominately used in
residential construction with the exception of the service cable and single
purpose high-amperage circuits such as sub-panels, electrical ranges or air
conditioners. Since copper is a better conductor than aluminum, the aluminum
wire must be larger to safely carry the same current as copper.
Some houses built or remodeled between the early 1950s and late 1970s were
wired with aluminum . This wiring can be identified by the letters AL or the
word ALUMINUM stamped on the plastic covering or cable. Don't confuse the
brand name ALCAN with solely aluminum wiring. Alcan makes both copper and
aluminum wiring for residential purposes.
There are basically three reasons why aluminum wiring may be of concern:
it has a tendency to oxidize which increases the wire's resistance
resulting in the wire overheating at the receptacle
it is more malleable (softer) than copper and therefore easily nicked
because of its high thermal expansion, it has a tendency to change shape
at the terminal screws and thus become loose or creep off
Given its incompatibility with fittings designed for other. metals in the
electrical system, improper connections may cause electrical resistance
which in turn may cause overheating and fire. To overcome the
incompatibility, the aluminum wiring may have been "pigtailed" with copper
using proper connectors, (Marrette-brown; Ideal-purple)
WARNING SIGNS OF UNSAFE ALUMINUM WIRING:
unusually warm or warped outlets and switch cover plates
smoke or sparks coming from receptacles and switches
strange odors in the area of receptacles and switches
untraceable problems with plug-in lights and appliances
periodic flickering of lights
CARE TO BE TAKEN WITH ALUMINUM WIRING:
Do not overfuse aluminum wiring. The AWG (American Wire Gauge) rating of
#12 aluminum wiring is equivalent to #14 copper wiring. Both are rated for
15 amps, so use only the t5 amp rated glass fuse, cartridge fuse or breaker
for aluminum wiring stamped either 12/2 or 12/3.
Copper and Aluminum should never be connected together except using
special anti-oxidant paste and crimped with approved clamp connectors. If
you use twist-on connectors (wire-nuts or marrets) make sure they are
approved for use with aluminum wiring.
When purchasing replacement receptacles, switches or fixtures ensure
that they are compatible for aluminum wiring. Typically, receptacles that
are approved for aluminum wiring will be stamped CO\.ALR, CU-AL or AL-CU
indicating they can be used for both copper and aluminum.
Do not use receptacles stamped with AL and a line through it. These
receptacles are incompatible with aluminum wiring.
As part of your preventive maintenance plan for the home, check switches
and receptacles by removing the cover plates and visually inspecting the
wires
for any signs of scorching, looseness, heat and/or odor.
Aluminum wiring is not handyman-friendly. If you suspect anything
unusual, have a licensed electrician work on circuits with aluminum wiring.
o*5
16 楼
铝线会松，容易引起火灾
相关阅读
看看这台遭雷劈的电视Central Air的Fan Only模式？求助，如何投诉Mortgage company买for closure的房子，要注意什么？大家帮推荐个剪草机吧。【请教】房子到底要离高压线多远才安全？请问有没有在维加斯的房屋修理商推荐 (转载)问个神器zephyr ak2100as 的安装问题1750 ft 的房子 （5个房间），换地毯（一般的）和 重新刷墙 大约需要多少钱呢？后院老有蜜蜂怎么办帮忙看看风水什么的，选房子，多谢了关于7-Year ARM请教:哪里能买到点蚊蝇拍瓷砖缝有没有形成一层光滑的膜的grout sealer?win7 封 yxlm 在 Living 版请教一个Refinance的问题（First House vs Second House)请推荐指导 deck 上漆春天后院驱虫药有哪些好用的？Inspection一般多少钱？当场还是转天给报告？今天Wells Fargo给了2.75% 15 Years Fixed rate