Don't buy MR DIY Surge Protector powerstrip, The MOV is only protecting one socket. 
Aug 13 2018, 08:41 PM
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.
It’s the same, they are all connected at the same line. 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.I doubt the parasitic inductance has any effect on it.
This post has been edited by Drian: Aug 13 2018, 08:42 PM
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