diff --git a/PowerDiagram.py b/PowerDiagram.py
index 0dd959a..bad1ae9 100644
--- a/PowerDiagram.py
+++ b/PowerDiagram.py
@@ -150,12 +150,15 @@ class Plug(object):
 			if in_con:
 				# apply incoming connection amperes limitation
 				capacity = add_capacity_constraints (capacity, in_con.get_max_amperes())
+				# print(str(self)+ 'after incoming connection amperes limitation, capacity = ' + str(capacity))
 		else:
 			# apply the machine containing this plug's amperes limitation
 			capacity = add_capacity_constraints (capacity, self.machine.get_max_amperes())
+			# print(str(self)+'apply the machine containing this plug s amperes limitation, capacity = ' + str(capacity))
 				
 		# apply this plug's amperes limitation
 		capacity = add_capacity_constraints (capacity, self.current_capacity_constraint)
+		# print(str(self)+'after apply this plug s amperes limitation, capacity = ' + str(capacity))
 
 		return capacity
 
@@ -178,8 +181,8 @@ class Connection(object):
 		self.current_capacity_constraint = None # the maximum amperes in this connection 
 
 	def __str__(self):
-		return str(self.from_plug) + ' -> ' + str(self.to_plug)
-		
+		return str(self.from_plug) + ' -> ' + str(self.to_plug) + ' (' + str(self.from_plug.get_max_amperes()) + str(self.get_max_amperes()) + 'A)'
+	
 	def get_max_amperes(self):
 		capacity = self.from_plug.get_max_amperes()
 		capacity = add_capacity_constraints (capacity, self.to_plug.current_capacity_constraint)
@@ -248,6 +251,7 @@ class PowerConfig(object):
 					plug_capacity = get_plug_type_attr(cur, plug_type, 'max_amps')
 					#if plug_capacity:
 					#	print('plug_capacity : %f A' % plug_capacity)
+			# print("read_plug_capacity : plug capacity for plug.machine.name="+plug.machine.name+" plug="+str(plug)+" : "+ str(plug_capacity)+ "A")
 			return plug_capacity
 
 		sqliteDbPath=':memory:'  # sqlite-specific special name for a file stored in memory. We could use something like '/tmp/simpadb.sqlite' here but this would make parsing really slow (1 minute instead of 1s), unless either :