diff --git a/FDTD/operator.cpp b/FDTD/operator.cpp
index 0feafb4..e6df2c9 100644
--- a/FDTD/operator.cpp
+++ b/FDTD/operator.cpp
@@ -334,6 +334,38 @@ void Operator::DumpOperator2File(string filename)
 	file.close();
 }
 
+//! \brief dump PEC (perfect electric conductor) information (into VTK-file)
+//! visualization via paraview
+//! visualize only one component (x, y or z)
+void Operator::DumpPEC2File( string filename )
+{
+	ofstream file( filename.c_str() );
+	if (!file.is_open()) {
+		cerr << "Operator::DumpPEC2File: Can't open file: " << filename << endl;
+		return;
+	}
+
+	FDTD_FLOAT**** pec = Create_N_3DArray( numLines );
+	unsigned int pos[3];
+
+	for (pos[0]=0; pos[0]<numLines[0]; pos[0]++) {
+		for (pos[1]=0; pos[1]<numLines[1]; pos[1]++) {
+			for (pos[2]=0; pos[2]<numLines[2]; pos[2]++) {
+				if ((GetVV(0,pos[0],pos[1],pos[2]) == 0) && (GetVI(0,pos[0],pos[1],pos[2]) == 0))
+					pec[0][pos[0]][pos[1]][pos[2]] = MainOp->GetIndexDelta( 0, pos[0] ); // PEC-x found
+				if ((GetVV(1,pos[0],pos[1],pos[2]) == 0) && (GetVI(1,pos[0],pos[1],pos[2]) == 0))
+					pec[1][pos[0]][pos[1]][pos[2]] = MainOp->GetIndexDelta( 1, pos[1] ); // PEC-y found
+				if ((GetVV(2,pos[0],pos[1],pos[2]) == 0) && (GetVI(2,pos[0],pos[1],pos[2]) == 0))
+					pec[2][pos[0]][pos[1]][pos[2]] = MainOp->GetIndexDelta( 2, pos[2] ); // PEC-z found
+			}
+		}
+	}
+
+	ProcessFields::DumpVectorArray2VTK( file, "PEC", pec, discLines, numLines );
+
+	file.close();
+}
+
 void Operator::DumpMaterial2File(string filename)
 {
 	FDTD_FLOAT*** epsilon;
diff --git a/FDTD/operator.h b/FDTD/operator.h
index 8f5a1e7..93d45a9 100644
--- a/FDTD/operator.h
+++ b/FDTD/operator.h
@@ -64,6 +64,7 @@ public:
 
 	virtual void DumpOperator2File(string filename);
 	virtual void DumpMaterial2File(string filename);
+	virtual void DumpPEC2File( string filename );
 
 	//! Get the name for the given direction: 0 -> x, 1 -> y, 2 -> z
 	virtual string GetDirName(int ny) const;
diff --git a/openems.cpp b/openems.cpp
index 095c2b1..d117545 100644
--- a/openems.cpp
+++ b/openems.cpp
@@ -48,7 +48,7 @@ openEMS::openEMS()
 	Enable_Dumps = true;
 	DebugMat = false;
 	DebugOp = false;
-	m_debugBox = false;
+	m_debugBox = m_debugPEC = false;
 	endCrit = 1e-6;
 	m_OverSampling = 4;
 
@@ -101,6 +101,12 @@ bool openEMS::parseCommandLineArgument( const char *argv )
 		DebugBox();
 		return true;
 	}
+	else if (strcmp(argv,"--debug-PEC")==0)
+	{
+		cout << "openEMS - dumping PEC info to 'PEC_dump.vtk'" << endl;
+		m_debugPEC = true;
+		return true;
+	}
 	else if (strcmp(argv,"--engine=multithreaded")==0)
 	{
 		cout << "openEMS - enabled multithreading" << endl;
@@ -268,6 +274,8 @@ int openEMS::SetupFDTD(const char* file)
 	}
 	if (DebugOp)
 		FDTD_Op->DumpOperator2File("operator_dump.vtk");
+	if (m_debugPEC)
+		FDTD_Op->DumpPEC2File("PEC_dump.vtk");
 
 	time_t OpDoneTime=time(NULL);
 
diff --git a/openems.h b/openems.h
index efa9f2e..5af83ce 100644
--- a/openems.h
+++ b/openems.h
@@ -52,7 +52,7 @@ protected:
 	bool Enable_Dumps;
 	bool DebugMat;
 	bool DebugOp;
-	bool m_debugBox;
+	bool m_debugBox, m_debugPEC;
 	double endCrit;
 	int m_OverSampling;
 	Operator* FDTD_Op;