2 files changed, 19 insertions, 3 deletions
diff --git a/src/main/java/com/github/technus/tectech/mechanics/tesla/ITeslaConnectable.java b/src/main/java/com/github/technus/tectech/mechanics/tesla/ITeslaConnectable.java
index 3cb8d9e9a2..de8d828cf4 100644
--- a/src/main/java/com/github/technus/tectech/mechanics/tesla/ITeslaConnectable.java
+++ b/src/main/java/com/github/technus/tectech/mechanics/tesla/ITeslaConnectable.java
@@ -36,9 +36,11 @@ public interface ITeslaConnectable extends ITeslaConnectableSimple {
         private static final HashSet<ITeslaConnectableSimple> teslaSimpleNodeSet = new HashSet<>();//Targets for power transmission
         private static final HashSet<ITeslaConnectable> teslaNodeSet = new HashSet<>();//Sources of power transmission
 
-        public static void teslaSimpleNodeSetAdd(ITeslaConnectableSimple target){
-            teslaSimpleNodeSet.add(target);
-            teslaNodeSet.forEach(origin -> addTargetToTeslaOrigin(target, origin));
+        public static void teslaSimpleNodeSetAdd(ITeslaConnectableSimple target) {
+            if (!teslaSimpleNodeSet.contains(target)) {
+                teslaSimpleNodeSet.add(target);
+                teslaNodeSet.forEach(origin -> addTargetToTeslaOrigin(target, origin));
+            }
         }
 
         public static void teslaSimpleNodeSetRemove(ITeslaConnectableSimple target){
diff --git a/src/main/java/com/github/technus/tectech/mechanics/tesla/TeslaCoverConnection.java b/src/main/java/com/github/technus/tectech/mechanics/tesla/TeslaCoverConnection.java
index 385ad8d74e..5c6fef6af8 100644
--- a/src/main/java/com/github/technus/tectech/mechanics/tesla/TeslaCoverConnection.java
+++ b/src/main/java/com/github/technus/tectech/mechanics/tesla/TeslaCoverConnection.java
@@ -1,6 +1,7 @@
 package com.github.technus.tectech.mechanics.tesla;
 
 import com.github.technus.tectech.util.Vec3Impl;
+import com.google.common.base.Objects;
 import gregtech.api.interfaces.tileentity.IGregTechTileEntity;
 
 import static com.github.technus.tectech.mechanics.tesla.ITeslaConnectable.TeslaUtil.teslaSimpleNodeSetAdd;
@@ -60,4 +61,17 @@ public class TeslaCoverConnection implements ITeslaConnectableSimple {
 
         return output;
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        TeslaCoverConnection that = (TeslaCoverConnection) o;
+        return Objects.equal(IGT, that.IGT);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(IGT);
+    }
 }