Hardware Developement : contuinity test

To check the connectivity, i perform a continuity test, continuity test is  checking of an electric circuit to see if current flows (that it is in fact a complete circuit). A continuity test is performed by placing a small voltage (wired in series) across the chosen path. If electron flow is inhibited by broken conductors, damaged components, or excessive resistance, the circuit is "open".

Devices that can be used to perform continuity tests include multimeters which measure current and specialized continuity testers which are cheaper, more basic devices, generally with a simple light bulb that lights up when current flows.

An important application is the continuity test of a bundle of wires so as to find the two ends belonging to a particular one of these wires; there will be a negligible resistance between the "right" ends, and only between the "right" ends.

When the continuity test done, i give them load to prove the continuity test  achieved. 240v supply connection applied (life,neutral and ground). i use test pen to complete the task. once i touch at the end poit of test pen the light is on which means the connection is good at no leakage voltage.