How to make a series test lamp - How to make a electric series board Urdu

How to make a series test lamp - How to make a eletric series board urdu
#seriestestboard #makeextensionboard #housewiringsystem
How do you test a 3 phase motor winding with a test lamp?
Check the motor winding resistance or ohms reading using a multimeter or ohmmeter for phase to phase terminal ( U to V,V to W ,W to U ). The ohms reading for each winding must be the same (or nearly the same). Remember that the three phases have identical windings or nearly so!
How to make a series test lamp
Cut the wire into two pieces making each one a meter long.
Now you have two pieces of wire. ...
You have other two ends of the wire free. ...
Check the continuity of the test lamp by an Anemometer; be sure that bulb turns on when the plug is inserted in a live two-pin socket.
Now, pull out the plug from the socket.
How do you test a 3 phase supply?
Where to Test. Three-phase voltage readings are typically taken at the incoming line side (typically the top) of the disconnect switch or at the line terminal that feeds power to the unit's distribution block, contractor, relay, or motor starter. This is usually the safest test location to test voltage.
Why is there no neutral in 3 phase?
A neutral wire allows the three phase system to use a higher voltage while still supporting lower voltage single phase appliances. In high voltage distribution situations it is common not to have a neutral wire as the loads can simply be connected between phases (phase-phase connection).
Should there be voltage on the neutral wire?
Some neutral-to-ground voltage should be present under load conditions, typically 2V or less. If the voltage is zero with a load on the circuit, then check for a neutral-to-ground connection in the receptacle, whether accidental or intentional. Reversed neutral and ground wires.

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