Paano pag ang NEUTRAL WIRE ay energized pero hindi nagtritrip ang circuit breaker?
Ito'y nangyayari lamang KAPAG ang neutral wire ay hindi nakakabit sa main power supply samantalang ang Line or "hot wire" para sa curcuit are konektado pa rin sa panel, at ang mga appliances are nakaplug sa mga outlet.
Pag hindi konektado sa main supply, dadaaanan pa din ito ng kuryente sa twing umaandar ang mga electrical loads natin at dahil kailangan natural sa kuryente ang maghanap ng path to earth, delikado sa tao sa mahawakan ang neutral wire na tulad nito.
Walang ORDINARYONG circuit breaker sa OPEN NEUTRAL FAULT CONDITION ang magtrireip o MAGSHUSHUTDOWN kasi ang line-to-neutral na current ay HINDI GANUN KATAAS.
In that situation, if you put a voltage indicator, such as a test screwdriver with a neon lamp onto the Neutral wire it will glow just as if it was Live, because it is being fed with a very small current coming from the Live supply via the plugged-in appliance(s) to the Neutral wire.
If you unplug all appliances, lights and whatever else may be connected to the circuit, the Neutral will no longer seem to be Live because there is no longer any path from it to the Live supply.
Even if there is a GFCI or an RCD in the circuit that too is unlikely to trip in this situation because the test current is so small and is of the same size - an equal current flow - in both the Live and the Neutral wires.
A "Disconnected Neutral" fault condition is VERY UNSAFE because somebody who does not know about the danger could easily touch the Neutral wire and get a bad shock whilst trying to find out why no appliances work when they are plugged into a circuit that actually has such a "Disconnected Neutral" fault condition.
Ito'y nangyayari lamang KAPAG ang neutral wire ay hindi nakakabit sa main power supply samantalang ang Line or "hot wire" para sa curcuit are konektado pa rin sa panel, at ang mga appliances are nakaplug sa mga outlet.
Pag hindi konektado sa main supply, dadaaanan pa din ito ng kuryente sa twing umaandar ang mga electrical loads natin at dahil kailangan natural sa kuryente ang maghanap ng path to earth, delikado sa tao sa mahawakan ang neutral wire na tulad nito.
Walang ORDINARYONG circuit breaker sa OPEN NEUTRAL FAULT CONDITION ang magtrireip o MAGSHUSHUTDOWN kasi ang line-to-neutral na current ay HINDI GANUN KATAAS.
In that situation, if you put a voltage indicator, such as a test screwdriver with a neon lamp onto the Neutral wire it will glow just as if it was Live, because it is being fed with a very small current coming from the Live supply via the plugged-in appliance(s) to the Neutral wire.
If you unplug all appliances, lights and whatever else may be connected to the circuit, the Neutral will no longer seem to be Live because there is no longer any path from it to the Live supply.
Even if there is a GFCI or an RCD in the circuit that too is unlikely to trip in this situation because the test current is so small and is of the same size - an equal current flow - in both the Live and the Neutral wires.
A "Disconnected Neutral" fault condition is VERY UNSAFE because somebody who does not know about the danger could easily touch the Neutral wire and get a bad shock whilst trying to find out why no appliances work when they are plugged into a circuit that actually has such a "Disconnected Neutral" fault condition.
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