22
6
CHECK FOR INSTALLATION
1
Set the tester for 250V AC or more.
2
Find the "hot" side of the AC outlet to be connected with a power plug.
2-1.
Put one tester rod to the point that seems to be a grounding point.
2-2.
Touch the other tester rod contact to one of the AC outlet slots to fi nd the side where the tester needle swings.
The side where the tester needle swings is the "hot" side.
3
Find the proper grounding point.
3-1.
With one tester rod put on the “hot” side, put the other to the point that seems to be a grounding point.
* If the needle swings to the power supply value for your country, it will be considered a proper grounding point.
If the needle does not reach the power supply value, it will not be considered a proper point.
3-2.
Find the grounding point by repeating this step until the needle points to the proper value.
4
Connect the power supply ground terminal [
] with the grounding point found in step
3
.
“Hot” side?
Actual “Hot” side
Grounding point
Actual grounding point
Actual grounding point
Power supply
Finding a proper "grounding point" for power supply
6-1
When checking operation after system installation shows a malfunction in spite of no error in equipment terminal connections, check for the
following "grounding point" and "ground fault" in wiring.
Tools required:
Analog tester
NOTES:
•
A digital tester cannot make a precise reading.
•
A megohmmeter cannot be used.
