Green metal boxes on light poles around homes contain distribution transformers, also known as “pole pigs”, which lower the voltage from the higher voltage in the supply lines to the power used in your house. They act like a fuse and open when there is a problem with the line or a. The large, green metal box sitting low to the ground in a yard is a common sight in modern suburban and residential neighborhoods utilizing underground power distribution. But are they dangerous? What are they called and what's their purpose? We'll cover all this and more to help you demystify big green electrical boxes. Understanding their. Yard utility boxes house power, telecom, water, or irrigation equipment; don't open them, keep clearance, and call 811 before digging nearby. Those green, gray, or tan enclosures in your grass aren't random boxes.
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