I am designing a simple switch-controlled relay board. On the board I have two 5 VDC, 10 A Sugar Cube relays which will receive 230 VAC from a terminal block connector and will be controlled with 5 VDC input via an SPST Switch.
Operating current: 10 A
Terminal block pitch: 2.54 mm
According to trace width calculation, trace width required for 10 A is 4.2 mm.
PCB copper thickness: 60 micron
PCB schematic and layout:
Will a 230 VAC LINE trace from the terminal block (pin 1) to both relays (via relay K1) need to be 4.2 mm or 8.4 mm (i.e. double), or something else, as a single trace is coming from the terminal block and going to both relays?