with coax removed and without regard to any other appliances, would killing the breaker to the radio room prevent damage to everything on the bench?
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OVER-VOLTAGE PROTECTION
- Thread starter unit_399
- Start date
Good to hear of a success story. The key here is fuse blew along with MOV, although the MOV was suppose to short. Most likely a metal case for the battery charger to contain any fire. Recommendation for 2025, get a TMOV (with built in fuse) and install in a metal enclosure.
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Yup. No power, no coax, almost as good as boxing up the radio.
I think the ideal solution is to build a power strip and isolate each socket with its own MOV and a fuse rated for maybe 3A max or whatever that equipment needs. It would be enough for test equipment and PC monitors and each MOV would only have to eat 3-4A. Just don't install a silly toggle switch in that power strip. A short through a shitty plastic switch is going to start a fire.
I don't really believe in whole-home surge protectors. They would have to be installed before the main feed is divided up in the breaker panel (and therefore be rated at the main breaker rating of 200A or whatever service you have). That surge moves at the speed of light, so a MOV shorting on just one breaker will not appear as a short to the other circuits fast enough (besides, it would be disconnectng itself from the rest anyhow). And honestly, I don't think they make surge protectors that can take that big of a hit. A regular MOV would turn into an arc lamp at 200A.
My grandparents recently had a strike. They said everything was on "surge protectors" (not sure what they used) and it still took out 80% of the stuff in the house (TV's, computers, surround sound, tens of thousands of dollars in total). Their strike came in on the phone line.
I don't really believe in whole-home surge protectors. They would have to be installed before the main feed is divided up in the breaker panel (and therefore be rated at the main breaker rating of 200A or whatever service you have). That surge moves at the speed of light, so a MOV shorting on just one breaker will not appear as a short to the other circuits fast enough (besides, it would be disconnectng itself from the rest anyhow). And honestly, I don't think they make surge protectors that can take that big of a hit. A regular MOV would turn into an arc lamp at 200A.
My grandparents recently had a strike. They said everything was on "surge protectors" (not sure what they used) and it still took out 80% of the stuff in the house (TV's, computers, surround sound, tens of thousands of dollars in total). Their strike came in on the phone line.
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I was going to make my own power strip set-up, at my bench,
on the wall, by just mounting about three metal electrical boxes
on the wall, so I don't have to keep moving cords around on
my 6-outlet metal power strip.
But while at ACE Hardware last year, I saw this nice power strip.
27 inches long with 12 outlets spaced apart about an inch.
Also a 15A circuit breaker, and 2 ways to mount on a wall.
about 40 dollars. it can be opened up, and MOVs added.
Maybe it has one.
I just looked online and they still sell this.
Made by Monster.
(click on this) www.acehardware.com Monster power strip
on the wall, by just mounting about three metal electrical boxes
on the wall, so I don't have to keep moving cords around on
my 6-outlet metal power strip.
But while at ACE Hardware last year, I saw this nice power strip.
27 inches long with 12 outlets spaced apart about an inch.
Also a 15A circuit breaker, and 2 ways to mount on a wall.
about 40 dollars. it can be opened up, and MOVs added.
Maybe it has one.
I just looked online and they still sell this.
Made by Monster.
(click on this) www.acehardware.com Monster power strip
TMOV's and iTMOV's provide an extra layer of fuse protection to the upstream fusing. If purchasing a new surge protection device (SPD) or a discrete component, see that it meets the UL 1449 standard. This is for SPDs in North America.
A search on Amazon for UL 1449 compliant devices listed many but numerous failed to actually provide details that they were UL 1449 compliant.
https://www.amazon.com/surge-protector-ul-1449-Electronics/s?k=surge+protector+ul+1449&rh=n%3A172282
A search on Amazon for UL 1449 compliant devices listed many but numerous failed to actually provide details that they were UL 1449 compliant.
https://www.amazon.com/surge-protector-ul-1449-Electronics/s?k=surge+protector+ul+1449&rh=n%3A172282
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Still want to install your own TMOV? I asked the nearest Master Electrician, Electronics Engineer and SPD power bar designer (aka ChatGPT) on how to install this TMOV in a unprotected power bar. After receiving a tongue lashing from this "HAL 9000", it proceeded to provide instructions on how to do it properly. See attached PDF.
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