How to test the durability of plastic electrical boxes

1. Visual inspection: First, you need to perform a visual inspection of the box. Check the box for cracks, chips, or other obvious damage. In addition, check whether the color of the box is even and whether there is any fading or spots.

2. Material test: The Plastic electrical boxes is usually polyethylene, polypropylene or polyvinyl chloride, etc. You can test a small piece of plastic by lighting it on fire. If the plastic is left with black lumps after burning, it’s probably high-density polyethylene; if it’s white ash, it’s probably low-density polyethylene.

3. Pressure resistance test: Place the plastic enclosure on two flat surfaces, and then apply a certain amount of pressure on it. If the box does not deform or crack under pressure, then it has good compression resistance.