diff --git a/McZapkie/Mover.cpp b/McZapkie/Mover.cpp
index 0c9aab71..e58d7b89 100644
--- a/McZapkie/Mover.cpp
+++ b/McZapkie/Mover.cpp
@@ -1191,7 +1191,6 @@ void TMoverParameters::CollisionDetect(int const End, double const dt)
 
 void
 TMoverParameters::damage_coupler( int const End ) {
-return;
     if( SetFlag( DamageFlag, dtrain_coupling ) )
         EventFlag = true;
 
diff --git a/TractionPower.cpp b/TractionPower.cpp
index 998da28a..3674b096 100644
--- a/TractionPower.cpp
+++ b/TractionPower.cpp
@@ -67,15 +67,14 @@ bool TTractionPowerSource::Load(cParser *parser) {
         // tak około 0.2, wg
         // http://www.ikolej.pl/fileadmin/user_upload/Seminaria_IK/13_05_07_Prezentacja_Kruczek.pdf
 		InternalRes = 0.2;
-    }
-	InternalRes = 0.001;
+	}
     return true;
 };
 
 bool TTractionPowerSource::Update(double dt)
 { // powinno być wykonane raz na krok fizyki
   // iloczyn napięcia i admitancji daje prąd
-	if (0) {
+	if (NominalVoltage * TotalPreviousAdmitance > MaxOutputCurrent) {
 
         FastFuse = true;
         FuseCounter += 1;