Items are now assumed to be conductive, rather than the opposite

code/modules/power/antimatter/shielding.dm

@@ -191,7 +191,6 @@ proc/cardinalrange(var/center)
 	icon_state = "box"
 	item_state = "electronic"
 	w_class = ITEMSIZE_LARGE
-	flags = CONDUCT
 	throwforce = 5
 	throw_speed = 1
 	throw_range = 2

code/modules/power/cable.dm

@@ -238,7 +238,7 @@ var/list/possible_cable_coil_colours = list(
 		shock(user, 5, 0.2)
 
 	else
-		if (W.flags & CONDUCT)
+		if(!(W.flags & NOCONDUCT))
 			shock(user, 50, 0.7)
 
 	src.add_fingerprint(user)
@@ -511,7 +511,6 @@ obj/structure/cable/proc/cableColor(var/colorC)
 	throw_speed = 2
 	throw_range = 5
 	matter = list(DEFAULT_WALL_MATERIAL = 50, "glass" = 20)
-	flags = CONDUCT
 	slot_flags = SLOT_BELT
 	item_state = "coil"
 	attack_verb = list("whipped", "lashed", "disciplined", "flogged")
@@ -932,7 +931,6 @@ obj/structure/cable/proc/cableColor(var/colorC)
 	throw_speed = 2
 	throw_range = 5
 	matter = list(DEFAULT_WALL_MATERIAL = 50, "glass" = 20)
-	flags = CONDUCT
 	slot_flags = SLOT_BELT
 	attack_verb = list("whipped", "lashed", "disciplined", "flogged")
 	stacktype = null

code/modules/power/lighting.dm

@@ -430,7 +430,7 @@
 				if(M == user)
 					continue
 				M.show_message("[user.name] smashed the light!", 3, "You hear a tinkle of breaking glass", 2)
-			if(on && (W.flags & CONDUCT))
+			if(on && !(W.flags & NOCONDUCT))
 				//if(!user.mutations & COLD_RESISTANCE)
 				if (prob(12))
 					electrocute_mob(user, get_area(src), src, 0.3)
@@ -468,7 +468,7 @@
 			return
 
 		user << "You stick \the [W] into the light socket!"
-		if(has_power() && (W.flags & CONDUCT))
+		if(has_power() && !(W.flags & NOCONDUCT))
 			var/datum/effect/effect/system/spark_spread/s = new /datum/effect/effect/system/spark_spread
 			s.set_up(3, 1, src)
 			s.start()