[Greenbuilding] Greenbuilding Digest, Vol 93, Issue 1

Fri Jun 1 15:00:15 CDT 2018

EMF stands for electromagnetic field. When a current flows though a wire it creates an electromagnetic field around itself. The higher the voltage and the larger the current, the more powerful an EMF is developed. Houses are full of wires that are developing EMFs every time an electrical device is used. When using grid power, there are miles (maybe hundreds of miles) of wires carrying the electricity to your house and they are developing EMFs all the way. The service drop to your house is developing an EMF based upon how much electricity you are using. 

Solar PV on your rooftop is generating direct current electricity and sending it to an inverter somewhere near your distribution panel, where the voltage is increased and the current made to alternate. The voltages and currents are relatively the same as if it was all coming from the grid, as it is supplying the same amount of power that you demand. As far as the locality of your house is concerned, PV is less concentrated for the most part, as all the power isn’t traveling through a single EMF generator (the service drop) to get to the distribution panel. Regarding the rest of the world, far lower EMFs are being developed because of avoiding those hundreds of miles of wires from the generating station.

Gordon 

> On Jun 1, 2018, at 12:00 PM, greenbuilding-request at lists.bioenergylists.org wrote:
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> Today's Topics:
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>   1. Photovoltaics and EMFs (Antonioli Dan)
>   2. Re: Photovoltaics and EMFs (Reuben Deumling)
>   3. Re: Photovoltaics and EMFs (Michael O'Brien)
> 
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Fri, 1 Jun 2018 09:11:45 -0700
> From: Antonioli Dan <solardan26 at gmail.com>
> To: Green Building <greenbuilding at lists.bioenergylists.org>
> Subject: [Greenbuilding] Photovoltaics and EMFs
> Message-ID: <6CBEFDF7-661F-440F-940C-F62326F5E0D0 at gmail.com>
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> 
> Someone recently told me that you shouldn?t put PV systems on roofs because they produce a massive and unhealthy amount of EMFs that get into your home. They heard this from a naturopathic doctor and were pretty much convinced of it. I?ve done a casual search online for articles that would address this but there?s not much and the test results seem inconclusive. I pointed out that if they were concerned about EMFs they should consider all of the AC wiring in their home and all of the appliances, etc. An electric stove kicks out a lot of EMFs, but people tend to obsess over specific things, like smart meters, etc. 
> 
> Has anyone researched PV and EMFs? Or measured it?
> 
> Dan Antonioli
> Laytonville Ecovillage
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Fri, 1 Jun 2018 09:26:00 -0700
> From: Reuben Deumling <9watts at gmail.com>
> To: Green Building <greenbuilding at lists.bioenergylists.org>
> Subject: Re: [Greenbuilding] Photovoltaics and EMFs
> Message-ID:
> 	<CAE5fceD3SygrnfU4kCp1fqQUQfW+SBQEHneSuXRC5rD=-GhrcA at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
> 
> The Germans are in general way more concerned with EMFs than folks here in
> North America, at least in my experience. Germany also has more PV than
> just about anywhere, so right off I'd venture that run of the mill PV
> doesn't seem likely to have EMF issues or the Germans would have raised a
> ruckus.
> 
> On Friday, June 1, 2018, Antonioli Dan <solardan26 at gmail.com> wrote:
> 
>> Someone recently told me that you shouldn?t put PV systems on roofs
>> because they produce a massive and unhealthy amount of EMFs that get into
>> your home. They heard this from a naturopathic doctor and were pretty much
>> convinced of it. I?ve done a casual search online for articles that would
>> address this but there?s not much and the test results seem inconclusive. I
>> pointed out that if they were concerned about EMFs they should consider all
>> of the AC wiring in their home and all of the appliances, etc. An electric
>> stove kicks out a lot of EMFs, but people tend to obsess over specific
>> things, like smart meters, etc.
>> 
>> Has anyone researched PV and EMFs? Or measured it?
>> 
>> Dan Antonioli
>> Laytonville Ecovillage
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> Message: 3
> Date: Fri, 1 Jun 2018 10:43:34 -0700
> From: "Michael O'Brien" <obrien at hevanet.com>
> To: Green Building <greenbuilding at lists.bioenergylists.org>
> Subject: Re: [Greenbuilding] Photovoltaics and EMFs
> Message-ID: <CF0598BE-185C-4D3D-AADE-623DDC1B0DEF at hevanet.com>
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> 
> Hi, Dan?
> 
> This issue comes up in the context of healthy homes. While I have met individuals convinced they can sense and are affected by fields, there isn?t much research on health effects of EMF from household or buildings energy applications. What there is can be found on the National Institute of Health web site. Research on high voltage transmission lines using sheep who were penned under them didn?t find abnormalities. 
> 
> For me, the fact that EMF field strength falls off geometrically, with the square of the distance, as it moves away from its source means humans only encounter very low strength exposures.
> 
> Best, Mike
> Sent from my iPhone
> 
>> On Jun 1, 2018, at 9:26 AM, Reuben Deumling <9watts at gmail.com> wrote:
>> 
>> The Germans are in general way more concerned with EMFs than folks here in North America, at least in my experience. Germany also has more PV than just about anywhere, so right off I'd venture that run of the mill PV doesn't seem likely to have EMF issues or the Germans would have raised a ruckus.
>> 
>>> On Friday, June 1, 2018, Antonioli Dan <solardan26 at gmail.com> wrote:
>>> Someone recently told me that you shouldn?t put PV systems on roofs because they produce a massive and unhealthy amount of EMFs that get into your home. They heard this from a naturopathic doctor and were pretty much convinced of it. I?ve done a casual search online for articles that would address this but there?s not much and the test results seem inconclusive. I pointed out that if they were concerned about EMFs they should consider all of the AC wiring in their home and all of the appliances, etc. An electric stove kicks out a lot of EMFs, but people tend to obsess over specific things, like smart meters, etc. 
>>> 
>>> Has anyone researched PV and EMFs? Or measured it?
>>> 
>>> Dan Antonioli
>>> Laytonville Ecovillage
>>> _______________________________________________
>>> Greenbuilding mailing list
>>> to Send a Message to the list, use the email address
>>> Greenbuilding at bioenergylists.org
>>> 
>>> to UNSUBSCRIBE or Change your List Settings use the web page
>>> http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org
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> End of Greenbuilding Digest, Vol 93, Issue 1
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