If it's a RCD, there may be a current leak to the ground, or the 'apparent' power may be over 15A. It may mean that your saw power factor [a.k.a. cos(fi)cos(fi)
] is lower than 0,82 (check on the label).
15 < Pcos(fi)+Psin(fi)15 < P*cos(fi)+P*sin(fi)
where fifi
is between 0 and 90 (in your case cos(fi)cos(fi)
is lower than 0,82). In your case P*sin(fi)=10P*sin(fi)=10
so we can go to fi < 63°fi < 63°
.