In the electrical trade it makes no difference which type of box you use. Both types are approved to be used as an electrical junction box. If the object is to keep costs down go with the plastic box. In harsher environments plastic boxes are used along with PVC plastic conduit.
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It depends on the specific application. Plastic junction boxes are typically used for non-metallic conduits and are lighter and easier to work with. Metal junction boxes are more durable, provide better protection against physical damage, and can be grounded for safety. Choose the material based on factors such as the environment, required durability, and regulations.
because the plastic is liter than the metal
No, substances like wood and plastic are not as good heat conductors as metals. Metals have free electrons that allow heat to transfer quickly through them, while wood and plastic are insulators with a higher resistance to heat flow.
It is better to use a plastic baby spoon instead of a metal one. Metal spoons make it easier for babies to hurt themselves when they are first learning to use eating utensils.
Metal lightning rods are better than plastic ones because they are more conductive and can safely direct the electrical charge from a lightning strike to the ground. Plastic rods do not conduct electricity effectively and may not provide the same level of protection against a lightning strike.
I think No, plastic is not a better insulator even compared to rubber shoes...Another AnswerYour question is a little like asking, "Is metal a better conductor than a electrolyte?". The reason for this is that there are lots of different types of plastic and various types of rubber. Without knowing exactly which sort of plastic, and what type of rubber, there is no way of knowing which is the better insulator.