Bus Bar Gutters

How about a photo?

Metallic enclosures are normally grounded as part of the safety system. If something comes loose and touches the enclosure, this creates a grounded connection which will then trip the fault protection system. In simple terms this prevents an enclosure from being energized. It is intended to protect people from making contact with the energized busses contained inside. If vibration or criters like a mouse does create a conductive path to the grounded shell, the circuit breaker trips.

Depending on what voltage is involved the protective method may be simple or complex. In one power station I worked at, we had 27,600 volts AC inside the buss enclosures. The protective relaying was complex and expensive. In a typical factory with 440V AC bus bars , protection is just a breaker.

tnx for the info sir :), since most of our bus gutters are ranging from 230~ upto 400~

so to provide safety we will place a grounding terminal for the enclosures.

The purpose of grounding and bonding is electrical safety. A low impedance path to ground will facilitate the operation of the overcurrent device rendering a short circuit harmless.

for submeters. some are use to contain cb( cb gutters)