Building with ICFs — will it lower the EMFs?
嗨，我在SD建造了ICF建筑的地下室和主地。一张海报建议使用金属屋顶来创造法拉第笼。我希望保持EMF的低位，并希望我能得到所有的输入。我没有意识到我可以在墙壁中使用钢筋给我的优势。我不确定在金属屋顶上定价。如果我没有使用金属屋顶，你有其他选择吗？
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答复
kami，
我发现证据表明EMF的前女友posure to human health problems to be unconvincing.
也就是说，这里有一些你可以在网上找到的建议。就像你上网的很多建议一样，你为它付出了很大的价值。
http://emf.sustainboonsources.com/
“减少房屋EMF暴露的指导方针：
"Electric meters and subpanels are powerful EMF emitters. Place these on walls of spaces where occupants spend the least time. Both sides of the wall should be in low usage regions as EMF’s are not blocked by walls. An example of a suitable location would be an outside garage wall.
“将加热器/空调鼓风机远离房屋的高使用寿区。
“专门使用Romex线。
“第一楼荧光吊顶夹具不应位于楼层水平的二楼楼层，如儿童游戏室。
“通过杆进入地球接地，仪表消除了由于电气接地而从水管发出的EMF
"Locate the overhead secondary service wire or the underground secondary service trench in a little-used area of the yard.
“从家中的高利用区域找到墙壁，地板和天花板的接线。如果实用，在屋顶下运行电线，并将其落在墙壁上以达到开关，网点等。
"Due to the number of appliances in a kitchen, it is an area of high EMF’s. However, it is an area of short-term exposure in most cases. Locate kitchen appliances on a wall away from high use areas that may adjoin the kitchen such as bedrooms or living rooms."
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来自不同网站的更多建议：
http://www.createhealthyhomes.com/
“减少电场曝光
"Best to use flexible steel MC (metal clad) or rigid (EMT) cable for all circuits to avoid AC electric field exposure
“至少使用MC电缆为每个床和日常使用区域（台面，轻松椅子）使用MC电缆为每个电路使用MC电缆来创造电清洁睡眠环境。
"Run remaining Romex circuits well away from bedrooms and daytime sitting areas
"Always wire smoke detectors with MC cable."
good advice Martin. I have a lot of this written down, but I hadn't read about the MC or EMT cable. EMF's are real to me. I can feel it and it makes me weak so I want to make sure I have my basis covered. Just curious what others have come up with.
要成为法拉第笼，所有导电元素都需要电连接 - 您打算如何将金属屋顶连接到钢筋？
电力线频率EMF在AC电源的房屋中无处不在，无论是Romex还是其他的房屋。扭转导电对将导致远低的电力线频率EMF排放来自布线中的电流，并使用扭曲的电缆而不是Romex将是一个更好的选择。Romex不会在其他标准接线上全部省略大量资金，但我可以比旋钮和管更好。
But the grounding structure and neutral connections (even from stray capacitance in plug loads) can defeat even foil-shielded twisted pairs.
Magnetic ballasted fluorescent fixtures do not meet present-day efficiency standards, but produced fairly high line-frequency (and harmonics thereof) EMF. Electronically ballasted fluorescents (self-ballasted CFLs and LEDs too) produce a lot of higher frequency (10s of kilohertz to maybe 20 megahertz) emissions.
Cathode ray tube displays (older non flat-screen TVs & computer monitors) had huge low frequency EMF issues. The power supplies in flat screen TVs produce a lot of higher frequency (100kHz-20MHz) emissions.
All AC electric motors produce large low frequency EMFs.
To lower EMF risk by very much you'd have to use only DC power, at a fixed voltage, and no plug loads that have internal power supplies that change that voltage, and nothing that has an electric motor (not even DC motors), and stay at least 1/4 mile from the nearest grid transformer or powerline. The notion that you can achieve any useful shielding with the building enclosure has no basis. Radio frequency shielded chamber buildings that are full Faraday cages that are lined with carbon loaded foam EMF absorbers used for emissions & immunity testing still have measurable line frequency EMF inside the buildings. Skin depth on very low frequency EMFs are large- effective shielding against line frequency requires extremely conductive metals (gold works, silver does too, but aluminum might be more affordable) that are thicker than 24 gauge roofing, or use of exotic alloys with extremely low magnetic reluctance (known in the trade as "mu-metal"). But as soon as you penetrate the Faraday cage with an electrical conductor (aka "antenna") all bets are off, be it wiring (powered or otherwise) or metal plumbing, etc.
我的职业生涯中的一部分是一部分，作为追逐干扰和低功耗和低频，高频和低电平的干扰和排放问题的电气工程师。（我甚至在桌面抽屉里有一个低频磁性EMF仪表，我目前坐在那里，不是我经常使用它 - 否则它将被埋在我的桌子顶部的其余杂乱！:-)）大多数来自网站的废话警告风险和推荐修复方法只是，骚扰毫无疑问，以极少的物理到超出电力和磁力的5年级理解，以及如何处理它。（从实际测量它的人那里拿走它，并设计了电气和电子设备的外壳设计，具有硬质指定的排放限制了一个非常广泛的电力和频率的排放。）
我想如果你在铁矿洞穴中养成蜡烛灯，你就会非常有限地接触线路频率EMF，但如果你想住在21世纪，你将不得不带一些曝光。但唯一记录的健康风险是非常极端水平的职业暴露（在现场电源变电站中安装变压器，是我们吗？）比你看到任何居住的数量级。甚至那些人在他们的生活中有许多其他因素对健康和生活的可比风险。
kami，这是你现在住的问题，还是在其他人的家中？我很好奇这一点。我们有一个家庭建造的家庭，以最小化EMF作为指导原则之一。正如我回忆起，她甚至发现能够掌握它的承包商或电工。
Dana，是否有一个有用的EMF仪表进行住宅检查？我定期得到了这个问题。工具目录有许多品种。任何建议吗？
谢谢达娜，我只是想覆盖所有基础。据我所知，我的家还可以。我用三场仪表进行了测试。我只是做基础。我的卧室里没有电视。我的床上没有电子插入墙壁的两侧。
所以这就是真正困扰我的原因，我不知道是不是EMF的。今年夏天当空调跑了，我无法忍受这种感觉。它可能是EMF或振动。空调的布线穿过我的LR和卧室的长度。所以它会跑大约3个小时，真的很打扰我，以至于如果我没有计划移动，我可以将Darn的东西搬到房子的另一边，所以接线没有贯穿LR和卧室。
I can't go to stores and last for long with the overhead fluorescent lights. They make me weak. I don't have any in my house and don't intend to.
I basically want to make sure the wiring is done so to minimize EMF's.
哇，你似乎被这么多...... :(
我很乐意借此机会在远程位置建造房屋，脱离网格!!!!!!!!!!!!!!!!!!
Solar power with DC electricity shouldn't bother you too much.
Dana Dorsett：如果他使用DC到交流变频类型的东西，它只会在使用中发出吗？
我相信，有可能通过使用普通钢丝连接来关注从房子的所有钢筋连接所有钢筋。
如果需要，您可以使用某种接地电缆连接器将其连接到金属屋顶，
but i would have a serious dicussion with someone that has alot of knowledge about galvanic corrosion and such ... as the roof will see alot of water and friction, could also have some kind of electrical "soup" with the ICF wall rebars.
I see metal roofs that look to be at least 100 years old around here so i'd take a sheet roof
无论如何在任何一次性瓦片之前就随时随地
在将它连接到钢板之前，刚刚获得通知，因此它实际上持续了。