Quote Originally Posted by shibby75 View Post
if the house has no provision for a grounding line, it would be safer if i can directly ground the ups by earthing it to metal rod?
Thats another way to do it. Plug a 10ft grounding rod in your lawn, run a gauge 6 wire (the bigger the better) near the UPS outlet, connect to copper ground bus bar(this will serve as distribution point), run a wire from busbar going to outlet, replace the outlet with 3-prong, connect your 3-prong UPS.

If it is impossible to plant a grounding rod, connecting to any metal rod like G.I pipe of your house plumbing is a hit or miss thing. Sometimes it could do more damage but most of the time it works. Take for example the refrigerator or any motorized appliance, they produce leak current that electrocutes anyone who touches the ref metal handgrip.. Running similar grounding mod could help eliminate those leaky current.

Usually building and industrial applications has this centralized ground point. The rods are planted forming a matrix.
In data and telecommunication setup, aside from lightning protection, grounding acts as a shield for low frequency electromagnetic interference. For powerplant, this is much required-even small generators nowdays have earth provision.