Plug a UPS into a surge suppressor, or vice versa?

[John Doe]

Are there definitive answers to the questions about which one comes
first, the surge suppressor or the UPS?

My understanding is that a UPS can be plugged into a stand-alone surge
suppressor to add the protection of the surge suppressor, and that a
surge suppressor can be plugged into a surge suppressor. Is there
anything wrong with either of those?

And a surge suppressor should not be plugged into a UPS?

Thank you.

 

[AZ Nomad]

Are there definitive answers to the questions about which one comes
first, the surge suppressor or the UPS?

My understanding is that a UPS can be plugged into a stand-alone surge
suppressor to add the protection of the surge suppressor, and that a
surge suppressor can be plugged into a surge suppressor. Is there
anything wrong with either of those?

And a surge suppressor should not be plugged into a UPS?

Thank you.

Unless you think lightening is going to strike between your equipment
and the UPS, the surge protector goes before the UPS.

The purpose of it is to clamp down kilovolt spikes on the power line. The
UPS is going to do that anyway, but MOV's wear out and eventually that
function of the UPS is going to vanish. A periodically replaced surge
protector between outlet and UPS will maintain that protection.

 

[John Doe]

....

A periodically replaced surge protector between outlet and UPS will
maintain that protection.

Even if the indicator LEDs say it's still providing protection?
Thanks.

 

[AZ Nomad]

Even if the indicator LEDs say it's still providing protection?

I'd think so.

A good MOV and a dead MOV are electrically identical (open circuit) until
you reach the clamping voltage.

I probably don't replace them often enough, typicaly every 4-5 years or
about after every other motherboard/cpu upgrade.

 

[ehsjr]

...




Even if the indicator LEDs say it's still providing protection?
Thanks.

The indicator is not believable, unless it is telling
you that the thing is _not_ providing protection.

Ed

 

[Gary Tait]

And a surge suppressor should not be plugged into a UPS?

No need to, unless the manufactuer specifies otherwise.

The UPS will have a given ampacity, and plugging more loads than outlets
could overload the UPS or the cord supplying it.