Question about Ryobi Circular Saw W/Dual Laser

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Ryobi circular saw --it keeps tripping my breaker

Every time I go to turn on my Ryobi circular saw it keeps tripping the circuit breaker - why?!

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I would inspect the cord before doing anything, checking the leads for signs of scarring which could be due to leakage/incorrect grounding due to damaged internal wiring. The saw could be dangerous to operate so take care and make sure you have continuity after all is said and done that way you don't have to take the saw back apart.

Posted on Apr 15, 2010

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Possible bad circuit breaker. If on a ground fault sensing circuit, the saw may have electrical leakage from it's internal wiring/motor to case ground (a possible problem if you have been using a metal cutting blade)(test by using a 3-pin to 2-pin adapter [no ground pin]). The circuit breaker may not be rated for the starting load of the saw (check the saw load rating against the breaker current rating--the breaker rating should be at least 25% higher). Possible excess current draw in the saw if any of the motor windings have shorted together for whatever reason. Hope this helps!

Posted on Feb 06, 2010

  • drallim Feb 08, 2010

    You should also check the movement of the blade for excess friction in a bearing or gearing. This will cause excess current to flow when starting the saw.

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