Don't buy MR DIY Surge Protector powerstrip, The MOV is only protecting one socket. 
Aug 14 2018, 10:05 AM
QUOTE(JohnLai @ Aug 13 2018, 07:56 PM)
Yes, I know about those three lines protection.
In MR DIY powerstrip, if there is power surge and all four switches are turned on, only Green socket will be protected from surge while the Blue, Orange and Red sockets will be hit by surge.
In this case, the MOV should be installed as shown below in red line (Point of entry):
This way, all four sockets will be protected from surge coming from Live wire by redirecting surge to Neutral wire out.
I have no idea why the MOV is installed that way protecting only one socket
and still pass SIRIM.
For components parallel with each other, theoretically install at the front or end the effect still the same.In MR DIY powerstrip, if there is power surge and all four switches are turned on, only Green socket will be protected from surge while the Blue, Orange and Red sockets will be hit by surge.
In this case, the MOV should be installed as shown below in red line (Point of entry):
This way, all four sockets will be protected from surge coming from Live wire by redirecting surge to Neutral wire out.
I have no idea why the MOV is installed that way protecting only one socket
and still pass SIRIM.But I doubt a SPD with rated power 0.4 W can protect you at all.
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