surge / spike protection

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andyes
Posts: 2
Joined: Wed Mar 09, 2022 7:27 am

surge / spike protection

Post by andyes » Wed Mar 09, 2022 7:40 am

Hi Guys hoping you can help here I am an electrician and fit digital clock like the one below. However recently I have been called back to 2 clocks where I suspect have been blown by a suspected surge or spike.
So is there anything I can fit on the clock mains supply that would give it some protection
Attachments
hager-astro-clock.jpg

andyes
Posts: 2
Joined: Wed Mar 09, 2022 7:27 am

Re: surge / spike protection

Post by andyes » Sat Mar 12, 2022 12:46 pm

Hi guys being doing some more research and would using 3 MOVs give protection ie 1 across L-N then 1 across L and N to earth .

Would that work ? and what MOV rating would you use ?

Any help would be appreciated

Andy

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