Joined Aug 2003
L9: Master
Forum Thread
Are these 2 surge protectors the same except one has a shorter cord?
February 12, 2021 at
07:06 PM
Amazon
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https://www.monoprice.com/product...1&format=2 [monoprice.com]
I used to sell stereos and we had an AB switch people would claim to be able to tell the difference between stuff until they had an A/B switch in there hand and did not know which they were listening to the 400.00speakers or the 40.00 ones for most songs. Certain songs that really stressed the speakers you could tell but receivers you could rarely tell. we would let the customer set up each system so they sounded fine to them then do the A/B.
That said I would protect my stuff with a UPS vs s surge protector in this day of power outages in the summer there are times when low voltage could be more of an issue than a surge.
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I used to sell stereos and we had an AB switch people would claim to be able to tell the difference between stuff until they had an A/B switch in there hand and did not know which they were listening to the 400.00speakers or the 40.00 ones for most songs. Certain songs that really stressed the speakers you could tell but receivers you could rarely tell. we would let the customer set up each system so they sounded fine to them then do the A/B.
That said I would protect my stuff with a UPS vs s surge protector in this day of power outages in the summer there are times when low voltage could be more of an issue than a surge.
Update...May have spoken too soon. Realizing now I have lost some dynamic range, probably because these units act as a kind of power conditioner.
https://www.thisoldhous
https://electricianappr
smaller surge protectors do wear out
https://www.howtogeek.c
Surge protectors in plastic cases. The way these things work to dissipate the surge is to turn it into heat. Heat in a plastic case can cause it to catch on fire. It happens. This is why I only buy these things if they are in metal cases, even though they can be hard to find sometimes.
The one on Amazon is in a metal case and UL listed. I really like that.
Monoprice link isn't working for me (blocked at work) so I can't compare.
Surge protectors in plastic cases. The way these things work to dissipate the surge is to turn it into heat. Heat in a plastic case can cause it to catch on fire. It happens. This is why I only buy these things if they are in metal cases, even though they can be hard to find sometimes.
The one on Amazon is in a metal case and UL listed. I really like that.
Monoprice link isn't working for me (blocked at work) so I can't compare.
the ones that catch fire i think are quality issues. where the energy is able to arc and doesn't ground properly.
the ones that catch fire i think are quality issues. where the energy is able to arc and doesn't ground properly.
https://www.electrical-forensics....ss
MOV (varistor) Fires and UL1449
When the energy rating of an MOV is exceeded, the results can be catastrophic. MOVs can breakdown and holes can be blown in them. MOVs can catch fire! MOV fire in surge protector fires became such a problem that in February 1998, the second edition of UL 1449, Standard for Surge Protection Devices, required that surge suppressors fail in a safe manner without causing a fire. All of the surge protector that I have examined that were manufactured after 1998 have contained some type of thermal fuse. The thermal fuse is usually pressed up against a MOV or between two MOVs and held in place by mylar tape or UL-94 VW-1 flame rated shrink tubing. In addition on some of their models, Belkin and Power Sentry place fiberglass covers over the MOV's.
OK, so if you have any old surge suppressors in plastic cases, check to see if the MOV's have flame protection!
Link has a bunch of good pictures, including carnage.