![]() ![]() Modern wiring systems with NM-B cable usually include a ground wire inside the cable, so the box is not part of the grounding system (however, metal boxes must be connected to the system ground, usually with a short length of wire called a pigtail). If you are using a non-metallic cable, such as Type NM-B (non-metallic sheathed cable), then you can use either plastic boxes or metal boxes, as long as the cable is secured to the box with an appropriate cable clamp. Plastic boxes are typically cheaper in price and include built-in clamps for wires. Metal boxes are more durable, fireproof, and secure. The swing arm lamp comes with a strong base and a clamp, it can stand on the desk or you can clip on with the clamp. If you are using metal conduit to run wiring to the electrical box, then a metal box is required-both to anchor the conduit and because the conduit and metal box itself may be used to ground the system. Sold by Micomlan-US and ships from Amazon Fulfillment. Weatherproof metal boxes for outdoor use are generally made of aluminum. Micomlan Led Desk Lamp with Clamp, Architect Desk Lamp for Home Office with Atmosphere Lighting, 24W Ultra Bright Auto Dimming Desk Light Stepless Dimming and Tempering LED Table Light. Most electrical boxes are either metal or plastic: Metal boxes are generally made of steel, while plastic boxes are either PVC or fiberglass. ![]() Best for: Metal-sheathed cable or metal conduit (metal boxes), Romex or non-metallic cables (plastic boxes).The Spruce Home Improvement Review Board This ItemLED Desk Lamp with Clamp, Architect Desk Lamp with Dual Light and Adjustable Swing Arm, Clip-on Eye-Care 4 CCT Modes & 5 Brightness Levels Table Light. ![]()
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