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Old 08-05-2017, 07:02 PM   #1
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Default advice on this surge protector..?

EMS-PT30x



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Old 08-05-2017, 07:24 PM   #2
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For surge protection, you will be better off with the Leviton unit from Home Depot. A few pictures below are showing the cost of "RV" surge protectors which are rather simple devices with inexpensive components. The video is by the varistor device inventor if you would like to learn more.

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Old 08-05-2017, 07:53 PM   #3
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We got one and considering the protection it affords, IMO it's worth the substantial cost.

If you are considering this level of protection, Randy at Best Converter knows the ins and outs of them.
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Old 08-05-2017, 08:09 PM   #4
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For surge protection, you will be better off with the Leviton unit from Home Depot. A few pictures below are showing the cost of "RV" surge protectors which are rather simple devices with inexpensive components. The video is by the varistor device inventor if you would like to learn more.
What George says. The Leviton device has better specs for a fraction of the cost.
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Old 08-05-2017, 08:09 PM   #5
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For surge protection, you will be better off with the Leviton unit from Home Depot. A few pictures below are showing the cost of "RV" surge protectors which are rather simple devices with inexpensive components. The video is by the varistor device inventor if you would like to learn more.
MOVs have prevented a lot of damage but they aren't foolproof. If the MOV shorts from a spike, the protective device usually trips off. But sometimes the spike blows the MOV open rather than shorting it and the protective device continues to pass power thinking it's business as usual. The devices typified by the Progressive unit incorporate additional protection with capacitors and/or inductors that serve to clamp spikes and narrow window surges before the MOV addresses them.
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Old 08-05-2017, 08:13 PM   #6
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MOVs have prevented a lot of damage but they aren't foolproof. If the MOV shorts from a spike, the protective device usually trips off. But sometimes the spike blows the MOV open rather than shorting it and the protective device continues to pass power thinking it's business as usual. The devices typified by the Progressive unit incorporate additional protection with capacitors and/or inductors that serve to clamp spikes and narrow window surges before the MOV addresses them.
The leviton device indicates if protection fails. I would be very surprised if it wasn't better in every way.
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Old 08-05-2017, 08:13 PM   #7
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I must be missing something, as the Progressive is also a bad power disconnect for wiring errors, voltage, frequency, etc isn't it? The Leviton appears to be just surge protection.
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Old 08-05-2017, 08:21 PM   #8
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I must be missing something, as the Progressive is also a bad power disconnect for wiring errors, voltage, frequency, etc isn't it? The Leviton appears to be just surge protection.
Depends on which PI device you get. OP asked about surge suppression. It is true that if you want AC power quality analysis you need more than the Leviton device. Note, however, that many modern inverter/chargers with internal transfer switches already have these features, so for many people they are redundant.
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Old 08-05-2017, 08:32 PM   #9
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I must be missing something, as the Progressive is also a bad power disconnect for wiring errors, voltage, frequency, etc isn't it? The Leviton appears to be just surge protection.
The PT30X is the portable version of the EMC-30. It tests for low voltage, high voltage, frequency, proper ground and neutral connections before it will either pass or reject the power source. Which Leviton unit is being suggested as an alternative?
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Old 08-05-2017, 08:45 PM   #10
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Depends on which PI device you get. OP asked about surge suppression. It is true that if you want AC power quality analysis you need more than the Leviton device. Note, however, that many modern inverter/chargers with internal transfer switches already have these features, so for many people they are redundant.
According to my Magnum MS2000 manual, all that is mentioned is high and low voltage lockout. No surge, polarity, frequency, etc.
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