On 2015-04-16, Bob Engelhardt wrote:
On 4/16/2015 2:59 AM, Steve W. wrote:
...
Arc damage is likely due to the rectifier failing and sending AC through
the switch.
...

DC is MUCH more likely to do arc damage. With AC, the current goes to
zero 120 times a second and gives an arc the opportunity to extinguish.
Not so with DC. Full wave rectified AC looks more like AC than DC,
but the inductance of the magnet will smooth it out enough to take away
its reaching zero.

Bottom line: if Iggy needs to replace the switch, it needs to be DC rated!

Bob


The switch is on the AC side.

i