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which is batter in construction job,ELCB or RCCB?
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Answer Posted / vijay
There are two types of ELCB:
voltage operated and,
current operated.
Voltage-operated ELCBs were introduced in the early 20th
century, and provided a major advance in safety for mains
electrical supplies with inadequate earth impedance. v-
ELCBs have been in widespread use since then, and many are
still in operation.
Current-operated ELCBs are generally known today as RCDs
(residual current device). These also protect against earth
leakage, though the details and method of operation are
different.
When the term ELCB is used it usually means a voltage-
operated device. Similar devices that are current operated
are called Residual-current devices.
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