Wiring of instruments powered by AC220V
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This post was last edited by huagongduzhe on 2010-6-25 at 14:12. Can someone provide a wiring diagram showing how to supply power to the instrument using AC220V? From the on-site power supply box to the on-site instruments. After reading the replies from a few other users, I still don’t think I’ve found an answer. What I mean is, could someone provide a wiring diagram for the power supply from the on-site power distribution box to the on-site instruments, for AC220V power supply? Is the cable 2X2.5mm2 or 3X2.5mm2?
The representation method varies from one unit to another. In this case, 220VAC is connected to the wiring box at the site, and from the terminals of that wiring box, the power is distributed to the instruments at the site. Is there any special way of representing this?
If an AC220V instrument power supply box is required on-site, a high-capacity power cable should be laid to the supply box; the power supply inside the box is then connected to each instrument that requires AC220V power via circuit breakers. Usually, a power distribution wiring diagram is required.
It’s enough to add a small circuit breaker to each power supply circuit
If AC220V instruments need to be supplied in a dispersed manner at the site, cables can be drawn directly from the distribution cabinet for power supply.