oldschool
Well-known member
The problem with these saws sounds a little like a ground fault issue. Most saws and some other power tools have a brush type motors. Over time the brushes wear and deposit a thin coating of carbon dust on everything in the housing. An older tool may have a metal case and a three wire plug/cord. The dust can conduct a small amount of current from the brush holder to the case (which is grounded) and would trip a ground fault protected circuit. Most home circuits are not ground fault protected except in the bathroom and some kitchen outlets. Therefore the saws seem ok when used in common wall outlets. It only takes a small amount of current to cause a groundVery disappointing!
I guess if you do end up buying a new saw retail, you can test it in the parking lot and return it 5 minutes later if it trips the truck lol
But seriously, very disappointing. That initial inrush must be massive on those things!
fault (maybe as low as 5 or 10 milliamps). The propower outlets are pretty sensitive for this.
Double insulated appliances with a 2 wire plug/cord don't normally present this problem.
You might have some success by using compressed high pressure air to blow out the dust around the brusholders in these tools.
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