Fixes #8485

code/modules/power/apc.dm

@@ -535,7 +535,8 @@
 					var/datum/effect/effect/system/spark_spread/s = new /datum/effect/effect/system/spark_spread
 					s.set_up(5, 1, src)
 					s.start()
-					return
+					if(user.stunned)
+						return
 				C.use(10)
 				user.visible_message(\
 					"<span class='warning'>[user.name] has added cables to the APC frame!</span>",\
@@ -555,7 +556,8 @@
 					var/datum/effect/effect/system/spark_spread/s = new /datum/effect/effect/system/spark_spread
 					s.set_up(5, 1, src)
 					s.start()
-					return
+					if(usr.stunned)
+						return
 				new /obj/item/stack/cable_coil(loc,10)
 				user << "<span class='notice'>You cut the cables and dismantle the power terminal.</span>"
 				del(terminal) // qdel

code/modules/power/cable.dm

@@ -193,9 +193,9 @@ By design, d1 is the smallest direction and d2 is the highest
 		var/datum/effect/effect/system/spark_spread/s = new /datum/effect/effect/system/spark_spread
 		s.set_up(5, 1, src)
 		s.start()
-		return 1
-	else
-		return 0
+		if(usr.stunned)
+			return 1
+	return 0
 
 //explosion handling
 /obj/structure/cable/ex_act(severity)

code/modules/power/smes.dm

@@ -275,7 +275,8 @@
 						s.set_up(5, 1, src)
 						s.start()
 						building_terminal = 0
-						return 0
+						if(usr.stunned)
+							return 0
 					new /obj/item/stack/cable_coil(loc,10)
 					user.visible_message(\
 						"<span class='notice'>[user.name] cut the cables and dismantled the power terminal.</span>",\