Forum Discussion

steved28's avatar
steved28
Explorer
May 28, 2019

Do I need a surge protector?

I know this sounds like a stupid question, so let me explain. My new rig has a Precision Circuits PCS, which works in hand with a Magnum 2Kw inverter. The documentation states that the PCS will work together via an inverter assist mode. The PCS also brings up circuits one at a time, has L-1 and L-2 voltage status, shows amperage draw, can detect between 30A, 50A and genny. And has alarms for brownouts, overvoltages, and wiring status error.

The auto transfer switch (Ironically made by Surge Guard) does not have any surge protection. So it seems the switch itself is not protected.

So before I invest around $300 in a Progressive Dynamics HW50C, I am asking if I actually need it? It seems some of the functions of it are redundant to ones I already have.
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    May 28, 2019
    First there are surge protectors and surge PROCTERS the Hw-50C is the latter.

    I've read of transfer switches and other devices with built in "Surge protection" but what I see when I look at them is spike supression. A Spike is a brief high voltage.. They do nothing for you if the voltage at the oullet is too low and if you plug into a 240 volt 30 amp outlet (Don't laugh and do not say it can't be done.. Happens all the time. often because somebody mis-wired a TT-30 or failed to read the "Max 125 volts" printed clearly upon it)

    Well the MOV's in those things go off like July-4. Firecrackers.

    Now the HW-50C will shut you down if the voltage goes low
    It will shut you down if the voltage goes high
    And it will protect you from Spikes.. Without firecracker effect

    So yes. you need one.

    I would put it in the line on the shore side of the ATS.. I don't worry so much about my generator. (Onan's monitor their output and shut down if it goes crazy)
  • ken1961's avatar
    ken1961
    Explorer
    May 28, 2019
    My 2013 Itasca Ellipse has the factory protector but I still use a surge protector. The price is small compared to the damage that can occur.

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