Level 1 of 33 · Electrical lab
Meet the bench and your meter
Level 1 of 33 in the Electrical lab: a free panel wiring exercise at Foundation level. Measure the bench supply, a 9 V battery, a resistor and a wire. Prove the board dead with a proving unit. Then light a lamp from the 24 V supply.
Goal
You are new on the training board.
What you do
- While the board is still live, measure with the meter on volts: the 9 V battery on DC volts.
- Lock out the board at the main switch Q1: switch OFF, apply your lock and your tag.
- Prove it dead, live-dead-live. Put the meter on the proving unit first (it must read), check the board reads 0 V.
- Wire the four conductors of the schedule: a 24 V lamp, and the battery across the resistor.
- With the meter on continuity, touch both ends of a wire you landed: it beeps. An open gap does not.
- Restore power and run the FAT. The lamp lights, and the resistor has 9 V across it.
Done when
The factory acceptance test is marked against the panel you built.
- 4 conductors in the wiring schedule
- 3 dead checks before you touch the panel
Skills
Instruments at Foundation level.
Before you start
This is the first level of the Electrical lab. You need no earlier work.
Free, in your browser, nothing to install. Your work is saved on this device. Updated 1 Nov 2026.