I've seen several videos on these, half of them show an MCB in the 'on' position protected by an RCD also in the 'on' position, earth lead on the earth bar, neutral on the neutral bar, and live on the MCB's line screw terminal.
But then i've seen other videos where the earth bar and the line/neutral terminals on the load/outgoing side of the RCD is used. John Ward for example shows this test with a standalone RCD on a rig board with two pieces of wire coming from line and neutral.
Which one is right?
But then i've seen other videos where the earth bar and the line/neutral terminals on the load/outgoing side of the RCD is used. John Ward for example shows this test with a standalone RCD on a rig board with two pieces of wire coming from line and neutral.
Which one is right?