diff --git a/api.lua b/api.lua
index e33a396..57f7f65 100644
--- a/api.lua
+++ b/api.lua
@@ -221,16 +221,16 @@ end
 -- \brief Transfers power from source node to it's network, if sides is set then power will be only transfered to network connected to that sides
 -- \param pos Vector with position of source node
 -- \param (optional) sides table with Vectors
+-- \param (optional) flowOverride number
 -- \returns two values: true if any neighbouring node has room for more power, false otherwise
 --                      true if any power was transferred, false otherwise
-industrialtest.api.powerFlow=function(pos,sides)
+industrialtest.api.powerFlow=function(pos,sides,flowOverride)
 	local meta=minetest.get_meta(pos)
 	-- if machine doesn't have network map then it's not capable of transferring power
 	local network=industrialtest.api.getNetwork(meta)
 	if not network or #network==0 then
 		return false,false
 	end
-	local powerFlow=meta:get_int("industrialtest.powerFlow")
 	local endpointCount=0
 	for _,endpoint in ipairs(network) do
 		local endpointMeta=minetest.get_meta(endpoint.position)
@@ -241,11 +241,11 @@ industrialtest.api.powerFlow=function(pos,sides)
 	if endpointCount==0 then
 		return false,false
 	end
-	local powerDistribution=math.floor(powerFlow/endpointCount)
+	local powerDistribution=math.floor((flowOverride and flowOverride or meta:get_int("industrialtest.powerFlow"))/endpointCount)
 	local transferred=false
 	local roomAvailable=false
 	for _,endpoint in ipairs(network) do
-		if not side or sides[endpoint.sourceSide] then
+		if not sides or sides[endpoint.sourceSide] then
 			local endpointMeta=minetest.get_meta(endpoint.position)
 			if powerDistribution<=endpoint.flow then
 				local transferredPower=industrialtest.api.transferPower(meta,endpointMeta,powerDistribution)
diff --git a/cables.lua b/cables.lua
index aa73a49..e173ce6 100644
--- a/cables.lua
+++ b/cables.lua
@@ -28,6 +28,7 @@ cable.onConstruct=function(pos)
 			if networks then
 				for _,network in ipairs(networks) do
 					industrialtest.api.createNetworkMapForNode(network)
+					minetest.get_node_timer(network):start(industrialtest.updateDelay)
 				end
 			end
 		end
diff --git a/machines/nuclear_reactor.lua b/machines/nuclear_reactor.lua
index 08ee313..277e964 100644
--- a/machines/nuclear_reactor.lua
+++ b/machines/nuclear_reactor.lua
@@ -241,7 +241,6 @@ reactor.activeOnTimer=function(pos,elapsed,meta,inv)
 		inv:set_stack("fuel",coolant,coolantStack)
 	end
 	if heat>200 then
-		-- TODO: Explode
 		minetest.remove_node(pos)
 		industrialtest.internal.explode(pos,#maxCluster*4)
 		return false,false
diff --git a/machines/transformer.lua b/machines/transformer.lua
index 9100e58..ad7bd2e 100644
--- a/machines/transformer.lua
+++ b/machines/transformer.lua
@@ -32,20 +32,16 @@ transformer.onTimer=function(pos,elapsed,meta)
 	local afterFlowLower=false
 	local afterFlowUpper=false
 	if powerAmount>=def._industrialtest_lowerFlow then
-		meta:set_int("industrialtest.powerFlow",def._industrialtest_lowerFlow)
 		afterFlowLower,_=industrialtest.api.powerFlow(pos,{
 			[1]=true,
 			[2]=true,
 			[3]=true,
 			[4]=true,
 			[6]=true
-		})
-		meta:set_int("industrialtest.powerFlow",industrialtest.api.ivPowerFlow)
+		},def._industrialtest_lowerFlow)
 	end
 	if powerAmount>=def._industrialtest_upperFlow then
-		meta:set_int("industrialtest.powerFlow",def._industrialtest_upperFlow)
-		afterFlowUpper,_=industrialtest.api.powerFlow(pos,{[5]=true})
-		meta:set_int("industrialtest.powerFlow",industrialtest.api.ivPowerFlow)
+		afterFlowUpper,_=industrialtest.api.powerFlow(pos,{[5]=true},def._industrialtest_upperFlow)
 	end
 	return powerAmount>0 and (afterFlowLower or afterFlowUpper),false
 end