[aprssig] Wholehouse Surge protection?

Tue May 31 01:16:59 EDT 2011

Think about how and why we use ferrite beads.
You do OT want the extra inductance added by the 
conductor through a metallic tube (choke).
This will impede the HF pulse of the lightning 
event and reduce or negate the effectiveness of the suppressor.
You can ground the two boxes, just not with a choke.

73
Glenn
WB4UIV

At 12:46 AM 5/31/2011, you wrote:
>The Cutler Hammer unit is connected via a metal 
>knockout connector and thatâ€™s the recommended 
>install, as a matter of fact I called their 
>support number and inquired about it, they told 
>me that if you install it without the units case 
>being grounded to the panel I could be denied 
>any warranty/damage claims.  Considering the 
>thousands of these installed I would think they 
>know why to do it this way. The GE units I have 
>seen install the same way, they are a metal 
>cased unit which is fastened into a knockout on 
>the breaker panel, the GE instructions quote 
>this is intended for proper RFI shielding of the 
>device, but I donâ€™t know anymore than that. 
>73, Scott KBÃ˜NLY -----Original Message----- 
>From: Glenn Little WB4UIV Sent: Monday, May 30, 
>2011 11:36 PM To: TAPR APRS Mailing List 
>Subject: Re: [aprssig] Wholehouse Surge 
>protection? Ensure that you connect the surge 
>panel to the breaker box wit PVC or similar non 
>metallic conduit. Metallic conduit will act as a 
>choke preventing the surge from getting into the 
>surge suppressor. Most surges will be lightning 
>induced and lightning is a high frequency event. 
>All grounds should be as short as possible, 
>number 6 or larger inside the building. Do NOT 
>use braid for a lightning ground as the high 
>frequency event does not like the bends back ad 
>forth that make up the braid. In a previous 
>life, I inspected tower sites for lighting 
>mitigation. When properly installed, a whole 
>house surge suppressor is very effective. 73 
>Glenn WB4UIV At 11:52 PM 5/30/2011, you 
>wrote: >The Cutler Hammer is the one I recommend 
>also.  Menards, Lowe's and Home >Depot all carry 
>them now, at least here all my local stores have 
>them in >stock.  Worth the investment ten times 
>over in my opinion. > >I still run UPS's on the 
>computers and surge arrest power strips, not 
>cheap >ones either, on all the electronics and 
>ham gear in the house, but having >the whole 
>panel one seems like a good extra step.  It's 
>easy to install, >just add a two pole (220v) 
>breaker to your panel and the Cutler Hammer 
>box >wall mounts next to your panel and installs 
>into a standard knockout, then >wire the two 
>blacks to the breaker and the white and green to 
>the >neutral/ground bus and your 
>done. > >73, > >Scott KBÃ˜NLY > > >-----Original 
>Message----- From: Herb Gerhardt >Sent: Monday, 
>May 30, 2011 10:44 PM >To: 'TAPR APRS Mailing 
>List' >Subject: Re: [aprssig] Wholehouse Surge 
>protection? > >I had some really bad voltage 
>spikes one year when a high voltage line 
>fell >on top of a low voltage line after a car 
>hit the power pole.  Well that >surge turned my 
>microwave oven to toast.  It burned up the 
>display and I >lost all confidence in it so 
>replaced it.  The local PUD (Public 
>Utility >District) said I could fill out a claim 
>and they might pay for the damages. >Looked at 
>the forms and decided it was not worth the 
>hassle..... > >I asked the local PUD if they had 
>any recommendations for a whole house >surge 
>protector and at that time (about 10 years ago) 
>they said they had >not >found one that was 
>reliable enough to recommend.  I then went to 
>the local >Lowes store and they had a Cutler 
>Hammer Model CHSP MAX surge protector >which is 
>rated for up to 50,000 Amps/phase.  From what I 
>remember it cost >me >under $50 and I installed 
>it myself in the main panel.  So far I have 
>not >had any more appliance damage from voltage 
>surges.  Yes, I still use the >small surge 
>protector strips to protect my computers and ham 
>radios.... > >It is available from 
>at: >http://www.amazon.com/gp/product/B0039ZJDRO/ 
>ref=olp_product_details?ie=UTF8& >me=&seller= 
>for $80 now days.....  Just search for CHSP MAX 
>and you will >get lots of hits.... > > >Herb, 
>KB7UVC >NW APRS Group, West Sound 
>Coordinator >Our WEB 
>Site: 
>http://www.nwaprs.info > > > > >>-----Original 
>Message----- >>From: aprssig-bounces at tapr.org 
>[mailto:aprssig-bounces at tapr.org] On 
>Behalf >Of >>Bob Bruninga >>Sent: Monday, May 
>30, 2011 7:39 PM >>To: TAPR APRS Mailing 
>List >>Subject: [aprssig] Wholehouse Surge 
>protection? >> >>Time for a new 
>topic... >> >>With lots of (APRS on topic) 
>electronics at home, I wonder about putting >in 
>a >>whole-house surge protector.  ANyone with 
>experience 
>there? > > > > >_________________________________ 
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