Neutral Conductor

Live Conductor

Ground Conductor

-Used to confirm the correct connection of the line and neutral conductors to the electrical fixtures  and also to ensure that disconnecting elements (e.g. circuit breakers, switches, fuses) are connected to the live conductor rather than the neutral (thus preventing shock or electrocution from contact with live conductors).

-Assessment of the quality of the installation via the naked eye and adherence to standard wiring practices. This test does not necessarily require any special equipment, but it requires special training so that the inspector knows what to look for as they visually review the  installation.

-Used to verify that the cable insulation of the cable is not damaged or that there are no faults present. Assesses the the condition of the insulation by testing between two conductive parts. It checks the resistance to current leakage through and over the surface of the insulation material surrounding a conductor. For a successful test, the resistance measurement must not be less than 1 MΩ .

-Verifies that the ground and neutral cables are installed correctly. Involves the removal of the bonding screw to isolate the neutral from the ground and then checking for continuity between the neutral bar and the panel case (or ground lug). A reading greater than 1 MΩ indicates proper installation of ground and neutral cables.

-Used to ensure that the circuits wired in the installation, contain cables capable of conducting from one end to another, without having significant resistance in its path. Verification is performed via meter. The circuit condition can be assessed qualitatively via audible or visual indication or quantitatively, through resistance measurement. A low resistance result means that the test is successful.