Using FR4 with 240V AC Mains

I have not had much luck searching for answers to the suitability
of 1oz, 1.6mm FR4 as a Mains PCB.

In particular; is it safe to run 200mil tracks carrying active and
neutral across each other on opposite sides of a 2 layer board?

Here's what I want to do

Circuit
http://web.aanet.com.au/pics/circuit.gif

PCB Layout (grid is 100mil)
http://web.aanet.com.au/pics/layout.gif

The other thing I'm concerned about is the likelihood of EMC
issues due to the long earth trace from the junction of C3 and C4

This device will have a SBC and 50Khz SMPS in it and the mains
current at 240V is about 1.1A.

-Mike


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Relevant Pages

  • Re: Using FR4 with 240V AC Mains
    ... 1.6mm FR4 as a Mains PCB. ... is it safe to run 200mil tracks carrying active and ... neutral across each other on opposite sides of a 2 layer board? ...
    (sci.electronics.design)
  • Re: Using FR4 with 240V AC Mains
    ... 1.6mm FR4 as a Mains PCB. ... is it safe to run 200mil tracks carrying active and ... issues due to the long earth trace from the junction of C3 and C4 ...
    (sci.electronics.design)
  • Re: Using FR4 with 240V AC Mains
    ... 1.6mm FR4 as a Mains PCB. ... that is 339V) between top and bottom layers of FR4. ... As it is your design would be considered unsafe. ... 2.phase to earth creepage & clearances almost ...
    (sci.electronics.design)
  • Re: Using FR4 with 240V AC Mains
    ... 1.6mm FR4 as a Mains PCB. ... that is 339V) between top and bottom layers of FR4. ... this is to be a commercial product for sale in Europe - dunno offhand ... As it is your design would be considered unsafe. ...
    (sci.electronics.design)
  • Re: Using FR4 with 240V AC Mains
    ... 1.6mm FR4 as a Mains PCB. ... that is 339V) between top and bottom layers of FR4. ... However looking at your layout there are serious safety problems if ... this is to be a commercial product for sale in Europe - dunno offhand ...
    (sci.electronics.design)