Re: Re: Experience with Magnetic Shielding?

[Guest guest]

The safest advice is to move.

Or for about $5k (maybe much more or less) you might be

able to get the meter moved to a pole away from the house.

Then have twisted wires (I think aluminum comes pre-twisted)

run underground to the panel. You will still get high readings

but not as high. Beware they may insist on upgrading the meter

to digital which could make things worse rather than better.

I just tried putting some shielding material over my panel.

The field 10' inside the house got slightly worse!

I don't quite understand your explanation of the box and shingles.

If the power company wires are twisted evenly I don't think there's

anything they can do to make it better for you, unless there is

RFI on the lines in which case you can tell them it's harmful interference

on you MFJ-856 radio and they should try to fix that.

The issue with net current is that all the current coming from

the power company on the wires should return via the neutral wire.

Usually it doesn't because it can go back through the ground rod or

pipes. It's not obvious whether breaking those connections will

help you in the shower, but further away it can make a big difference

(unless the dominant field is from something else, like the lines on the

street).

Chances are removing all those connections will violate code, but the

grounding rules seem to be changing a lot. As long as the neutral and

ground are bonded in the panel (which is true in the US for the most part)

you won't notice if there is no earth connection, unless the neutral wire

breaks some day. Which you would notice in either case, but might be less

dangerous with the connections. I've never encountered such a neutral break

but they do happen sometimes, so I've read. But it seems unlikely unless

there is construction or rewiring being done.

On Sat, Jan 1, 2011 at 11:54 AM, ChrisR <vwporscheaudi@...> wrote:

>

>

> Hi Bill. Thanks for your response. I will look into the silicon steel more,

> as this may be a little cheaper than all this mu-metal ive been looking at!

>

> My issue continued: I have the power " drop-down " coming into my roof and

> going on the opposite wall of my shower and bedroom. the box is pretty much

> next to my head when I shower, and the highest readings.

>

> I want to put a piece of shield(silicon steel?) in between the back of the

> panel box, and the shingles on my house. its a small distance, maybe 1 " , but

> anything I can pack in that distance is best.

>

> Is there a wrap or conduit that is good to wrap around the power lines? (of

> course with power company approval)

>

> thanks.

>

> p.s. as far as checking current to ground in the neighborhood, can you

> elaborate? get a net current flow meter and walk to my neighbors houses

> putting it around the water/gas/ground lines?

>

> would the catv line near the power line amplify the magnetic field?

>

>

>

> >

> > >

> > >

> > > Hi Guys! New to the group, and one of the many topics I hope to learn

> more

> > > about is shielding magnetic fields. Im close to the main line to the

> house,

> > > and the panel box in the bedroom. I would like to use some kind of foil

> or

> > > other material to line outside the house wall, and panel to block some

> of

> > > the magnetic entering through the wall. I hope someone has heard about

> this

> > > before. Im getting a 10mg reading or higher sometimes!

> > >

> > > Thanks guys.

> > >

> > >

> > >

> >

> >

> >

[Guest guest]

Hi,

 

Are you living in a rental or condo type dwelling?  If not, have you considered

changing the entrance of your electric power to another location?  This will

not work for every house, but in my house, we had the circuit box, and entrance

to it, moved to the far side of a semi-attached garage.  We had the actual

meter put on the pole at the street, so now instead of being 3 to 10 feet away

when we are sitting in our living room, it is at least 40 feet away.  The

circuit box is at least 25 feet away.  Yes, this was pricey--especially since

we had to erect a new pole, but you are talking alot of shielding which might or

might not work and it is also very pricey.  As I mentioned earlier, this is not

a solution which will work for everyone, but it might be something you never

even considered. 

 

Just a thought;

Diane

From: ChrisR <vwporscheaudi@...>

Subject: Re: Experience with Magnetic Shielding?

Date: Saturday, January 1, 2011, 1:54 PM

 

Hi Bill. Thanks for your response. I will look into the silicon steel more, as

this may be a little cheaper than all this mu-metal ive been looking at!

My issue continued: I have the power " drop-down " coming into my roof and going

on the opposite wall of my shower and bedroom. the box is pretty much next to my

head when I shower, and the highest readings.

I want to put a piece of shield(silicon steel?) in between the back of the panel

box, and the shingles on my house. its a small distance, maybe 1 " , but anything

I can pack in that distance is best.

Is there a wrap or conduit that is good to wrap around the power lines? (of

course with power company approval)

thanks.

p.s. as far as checking current to ground in the neighborhood, can you

elaborate? get a net current flow meter and walk to my neighbors houses putting

it around the water/gas/ground lines?

would the catv line near the power line amplify the magnetic field?

>

> >

> >

> > Hi Guys! New to the group, and one of the many topics I hope to learn more

> > about is shielding magnetic fields. Im close to the main line to the house,

> > and the panel box in the bedroom. I would like to use some kind of foil or

> > other material to line outside the house wall, and panel to block some of

> > the magnetic entering through the wall. I hope someone has heard about this

> > before. Im getting a 10mg reading or higher sometimes!

> >

> > Thanks guys.

> >

> >

> >

>

>

>

[Guest guest]

You should tell them that not only is the knob and tube

terrible safety-wise, it also will cause interference on all

their electronics. They should upgrade at least to romex,

ideally metal clad or in conduit, twisted. 3-conductor romex

is usually twisted and that would help.

It's usually a good idea for all the wires (cable, electric) to follow

more or less the same path. That way the AC on the cable will

make a smaller loop. If it was my house I would disconnect that

ground or put a spark gap or big $4 Zener diode (bi-directional,

12V should be OK, also called transient voltage suppressor TVS).

In which case it's only grounded when lightning hits (unless the

TVS gets burnt away). It's actually nice to have it grounded

to reduce electric fields, but you want to ground it far away from

you to reduce the magnetic field. So have the ground wire follow

back where the cable came from and ground it at the property line if

possible. Or have the cable guy open the jacket and ground it at the

property line. Or tell him to disconnect the whole thing....

On Sat, Jan 1, 2011 at 10:54 PM, ChrisR <vwporscheaudi@...> wrote:

>

>

> Thanks for the responses.

>

> To add to this matter, I have recently found that before my CATV cable is

> grounded at the meter tube close to my bedroom, that I have high gauss

> readings! I believe this to be my issue, or at least half of it. The CATV

> coaxial cable drapes close to my bedroom windows, close than the actual

> power lines by about 5 feet.

>

> I have called the cable company and told them my issue. The last guy was

> scared to climb on a ladder to install some cables, will see how the

> pressure increases what happens haha. I believe there to be some power on

> the CATV lines... if anything, im getting it re-routed, which is much easier

> than power feeds.

>

> I have also noticed high readings from the neighbors property. They have a

> old style knob and tube from the lines to there house going close by my

> room. This is really old style, and seems like a ionizer at this point...

>

> Anywho, thats the update.

> Thanks again, and I will try to help my best back in the group!

> All the best.

>

>

>

> > > >

> > > > >

> > > > >

> > > > > Hi Guys! New to the group, and one of the many topics I hope to

> learn

> > > more

> > > > > about is shielding magnetic fields. Im close to the main line to

> the

> > > house,

> > > > > and the panel box in the bedroom. I would like to use some kind of

> foil

> > > or

> > > > > other material to line outside the house wall, and panel to block

> some

> > > of

> > > > > the magnetic entering through the wall. I hope someone has heard

> about

> > > this

> > > > > before. Im getting a 10mg reading or higher sometimes!

> > > > >

> > > > > Thanks guys.

> > > > >

> > > > >

> > > > >

> > > >

> > > >

> > > >