Backup Power

[gwh57]

Originally Posted by saltn00b
scsi - does running a battery back up negate the reason why you would install a GFCI?
meaning, if something sparked and gournd faulted, the GFCI would cut the power, but if the battery back up senses power is lost, would it not continue to supply electricity until batteries are depleted?
No, you still need the GFCI.

 

[saltn00b]

im not suggesting getting rid of or not installing a GFCI, i am asking if the UPS will continue to send power down the line after a GFCI is tripped. i think it would, which could cause harm or fires.

 

[imfsub12]

Originally Posted by SCSInet
One final word of caution... one poster here talked about someone he knew that connected several UPSs, one behind the other. This will often not work. UPSs don't put out perfect household current, they put out power that a computer power supply (which believe or not is less picky than a pump) can deal with. UPSs themselves often don't recognize this power, so if one UPS is being supplied by another one on battery, it will kick the second one onto battery and so on down the line until just one UPS is left running your stuff.
ya that was me..
my friend did this as he is a computer geek worked at a computer place.. has a $4000 computer.. and he tested out the theory and he stated it work..
but hea i just listened and did't try it myself.. as i only have on apc under my feet...

 

[renogaw]

Originally Posted by saltn00b
im not suggesting getting rid of or not installing a GFCI, i am asking if the UPS will continue to send power down the line after a GFCI is tripped. i think it would, which could cause harm or fires.
i would think yes.
EDIT: maybe not though. its the amp draw that would really hurt you i would think, which is what causes the gfci to pop (if i'm remembering correctly)

 

[gwh57]

Originally Posted by renogaw
i would think yes.
EDIT: maybe not though. its the amp draw that would really hurt you i would think, which is what causes the gfci to pop (if i'm remembering correctly)
If your UPS is not on a GFCI then you are not protected when the power is on.