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Fixed typo.
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Ricardo
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What is the required creepage (e.g. trace-to-trace) distance for PCBs handling 240VAC rms? What about 120VAC?

This is for UL and CE certification.


The standards for PCB Creepage (e.g. the distance across the surface of a PCB between high-voltage connections) are locked up in propietaryproprietary, pay-only IEC standards (specifically, IEC Report 664/664A ).

This is troubling, as following these standards is a good way to ensure safety, even if you never intend to actually get your project UL or CE certified.

Can we get a nice summary of what trace-trace spacing should be maintained for common voltages (e.g. 120V, 240V), with common materials (e.g. FR4, etc...)?

What is the required creepage (e.g. trace-to-trace) distance for PCBs handling 240VAC rms? What about 120VAC?

This is for UL and CE certification.


The standards for PCB Creepage (e.g. the distance across the surface of a PCB between high-voltage connections) are locked up in propietary, pay-only IEC standards (specifically, IEC Report 664/664A ).

This is troubling, as following these standards is a good way to ensure safety, even if you never intend to actually get your project UL or CE certified.

Can we get a nice summary of what trace-trace spacing should be maintained for common voltages (e.g. 120V, 240V), with common materials (e.g. FR4, etc...)?

What is the required creepage (e.g. trace-to-trace) distance for PCBs handling 240VAC rms? What about 120VAC?

This is for UL and CE certification.


The standards for PCB Creepage (e.g. the distance across the surface of a PCB between high-voltage connections) are locked up in proprietary, pay-only IEC standards (specifically, IEC Report 664/664A ).

This is troubling, as following these standards is a good way to ensure safety, even if you never intend to actually get your project UL or CE certified.

Can we get a nice summary of what trace-trace spacing should be maintained for common voltages (e.g. 120V, 240V), with common materials (e.g. FR4, etc...)?

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Connor Wolf
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Creepage distance for PCBs handling line voltage AC?

What is the required creepage (e.g. trace-to-trace) distance for PCBs handling 240VAC rms? What about 120VAC?

This is for UL and CE certification.


The standards for PCB Creepage (e.g. the distance across the surface of a PCB between high-voltage connections) are locked up in propietary, pay-only IEC standards (specifically, IEC Report 664/664A ).

This is troubling, as following these standards is a good way to ensure safety, even if you never intend to actually get your project UL or CE certified.

Can we get a nice summary of what trace-trace spacing should be maintained for common voltages (e.g. 120V, 240V), with common materials (e.g. FR4, etc...)?