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Author Topic: Multi plug strip  (Read 640 times)

K0FUZ

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Multi plug strip
« on: September 28, 2020, 09:57:38 AM »

anyone have a good suggestions for a multiple plug outlet strip to get the best protection and and shielding form interference?
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N8CBX

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Re: Multi plug strip
« Reply #1 on: September 28, 2020, 10:10:18 AM »

Tripp-Lites are noisy.
I bought one from MFJ, made well I think
Jan N8CBX
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Dayton Ohio - The Birthplace of Aviation

W6MK

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Re: Multi plug strip
« Reply #2 on: September 28, 2020, 10:45:42 AM »

Separate the functions. Design and build whatever you need for "protection."

I use a Tripp-Lite strip with 12 outlets (plenty) an "on" light and a power switch.

My surge protection is with a Brick Wall series power surge unit.
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WA6BJH

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Re: Multi plug strip
« Reply #3 on: September 28, 2020, 10:57:02 AM »

I have three Tripp Lite Isobars and they’re not noisy at all.

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K6AER

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Re: Multi plug strip
« Reply #4 on: September 28, 2020, 11:07:40 AM »

A plug strip protection strip will at best have 2 ea. $.5 MOVs. maybe 5000 surge amps at .000001 seconds. This attached to a green wire ground at least 100 feet from the home AC panel ground. So you antenna takes a hit and the whole station surge ground flots up to 40,000 volts due to the I/R resistive losses in the return surge protector ground.

Why bother unless you are going to do it right.

Put the surge protector at the AC panel and a grounded antenna switch for the incomming antenna coax feeds as close to the AC panel as possible tied to the panel ground.
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K1VSK

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Re: Multi plug strip
« Reply #5 on: September 28, 2020, 01:13:14 PM »

anyone have a good suggestions for a multiple plug outlet strip to get the best protection and and shielding form interference?
as stated above, a ‘power strip’ will no neither. Ground and proper surge protection...
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KD0REQ

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Re: Multi plug strip
« Reply #6 on: September 28, 2020, 02:20:19 PM »

for shielding, conduit from the breaker panel, to steel boxes, run a separate ground wire, don't count on the conduit to conduct if you need safety ground. the conduit will shield the power leads.

as mentioned above, it does diddly-squat for lightning-induced currents. code says if this is a subpanel, run safety ground to your lightning rod(s) and back to the ground buss in your main entrance panel. that helps in case of a near strike on the block.

you have to do serious work to mitigate and dissipate a direct hit. check the Polyphaser website for ideas. a grounded antenna switch inside still lets the big juice inside. best to attenuate and dissipate it outside with a big plate to ground, with adequate conductor size to not vaporize under thousands of amps and millions of volts, lots of suppressors, and let it burn up the outside stuff. I even have my roof stands direct to ground. stuff is going to die hard and fast. let it happen outside.
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W9IQ

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Re: Multi plug strip
« Reply #7 on: September 28, 2020, 03:37:47 PM »

Put the surge protector at the AC panel and a grounded antenna switch for the incomming antenna coax feeds as close to the AC panel as possible tied to the panel ground.

This is good advice but do keep in mind that a couple of the strips offer a free multi thousand dollar guarantee against surge damage. Be an informed consumer, read the requirements and retain the paperwork. In my experience, this is very inexpensive insurance.

- Glenn W9IQ
« Last Edit: September 28, 2020, 03:59:50 PM by W9IQ »
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- Glenn W9IQ

God runs electromagnetics on Monday, Wednesday and Friday by the wave theory and the devil runs it on Tuesday, Thursday and Saturday by the Quantum theory.

WB4SPT

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Re: Multi plug strip
« Reply #8 on: September 30, 2020, 10:49:00 AM »

anyone have a good suggestions for a multiple plug outlet strip to get the best protection and and shielding form interference?
as stated above, a ‘power strip’ will no neither. Ground and proper surge protection...

My Trip Lite 8 outlet 4 foot power strip has MOV's.  1650 Joule rating. 

Pretty good pricing on Amazon: 
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WB6BYU

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Re: Multi plug strip
« Reply #9 on: September 30, 2020, 12:48:09 PM »

Quote from: N8CBX

Tripp-Lites are noisy...



Just the opposite in my experience.

I picked an IsoBar up cheap at the Goodwill store.
Went on an ARES event and the HF station couldn't
operate due to generator noise.  Stuck the IsoBar
in line and they could hear signals.


Possibly you had a partially shorted MOV in your unit?
That can generate noise.  And it can happen to any
unit with MOVs, not just TrippLite.

W9IQ

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Re: Multi plug strip
« Reply #10 on: September 30, 2020, 01:26:50 PM »

I can understand why you had that experience, Dale. The ISOBar is more than a few MOVs. Here is a tear-down picture from Tom's Hardware:



I think we can all recognize those devices. Quite impressive.

- Glenn W9IQ
« Last Edit: September 30, 2020, 01:30:32 PM by W9IQ »
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- Glenn W9IQ

God runs electromagnetics on Monday, Wednesday and Friday by the wave theory and the devil runs it on Tuesday, Thursday and Saturday by the Quantum theory.

KE0ZU

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Re: Multi plug strip
« Reply #11 on: October 21, 2020, 08:43:48 PM »

I just use the 4 foot strips from harbor freight.   They have worked quite well.

 

As for lightning strikes, if it gets in the house nothing is going to stop the damage.     You have to do that mitigation outside.

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Regards, Mike
https://mikeharrison.smugmug.com/
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