Ammeter Selector Switch Wiring Diagram For 3 Phase 3 Wires

 In electrical panel boards, mostly an ammeter selector switch is installed, that's this post is about the ammeter selector switch wiring diagram. In a single-phase system, we need only one ammeter with a current transformer to test the total load in amperes. But in a three-phase system, for testing ampers for each Line. We need 3 ammeter and 3 current transformers. But in the electrical panel board, we can do this with only one ammeter or ampere meter by using the ammeter selector switch.

Ammeter Selector Switch Wiring Diagram For 3 Phase System

ammeter selector switch wiring diagram

In the above ammeter selector switch wiring diagram, all connections have shown how to connect the ammeter with current transformers and how to install an ammeter selector switch. A1 and A2 for the ammeter, R, S, T, are 3 phase supply wires, N is common for all current transformers. 

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