Copper Trail fot mains 240 V supply
50 2
ashusnu 1 week ago
Hi I am desigining PCB where I have added screw terminal for AC Mains input which is then connected to AC Input of HiLink 5V - 5W Converted. I Have question what should be trail width from screw terminal to HiLink Input. Will it work on 1 oz of copper.? Thanks in advance.
andyfierman 6 days ago
1. You need to consider the creepage and clearance distances required for you mains voltage. 2. You also need to work out what current is flowing in that track and then decide what temperature rise above ambient is acceptable for that track.  3. Then use tables or an online calculator to work out what track width you need to stay below that temperature rise.  4. If you cannot accommodate the width then you must either got to 2oz copper or use copper on more layers. For more on creepage and clearance distances see: []( For more on trace width calculations see this topic: [](
GerritMax 4 days ago
Not sure if this is of any use [](
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