# Routing recommendation

**URL:** <https://sierraconnect.protoexpress.com/t/routing-recommendation/1059>\
**Category:** Design and Layout\
**Created:** [February 9, 2024, 1:19pm UTC](https://sierraconnect.protoexpress.com/t/routing-recommendation/1059 "2024-02-09T13:19:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![gigio](https://avatars.discourse-cdn.com/v4/letter/g/839c29/32.png) [@gigio](https://sierraconnect.protoexpress.com/u/gigio)\
**Post date:** [February 9, 2024, 1:19pm UTC](https://sierraconnect.protoexpress.com/t/routing-recommendation/1059/1 "2024-02-09T13:19:01Z")

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I’m currently working on a PCB design that incorporates a 220V AC voltage entering through the power inlet connector. This signal then travels to an SMPS, converting it into a 12V DC signal, further transforming into other required low voltages. However, I’m facing challenges with the routing of AC voltage and ensuring proper cutout and isolation from the low-voltage components. I would greatly appreciate any advice on best practices for handling AC voltage routing and isolation in this scenario. Thank you in advance for your assistance!

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**Author:** ![allank](https://sea2.discourse-cdn.com/sierraconnect/user_avatar/sierraconnect.protoexpress.com/allank/32/259_2.png) [@allank](https://sierraconnect.protoexpress.com/u/allank)\
**Post date:** [February 13, 2024, 10:24pm UTC](https://sierraconnect.protoexpress.com/t/routing-recommendation/1059/2 "2024-02-13T22:24:51Z")

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The best way to do this is find out much clearance you MUST have, see if it fits, then add any additional clearance from any room you have left.