许可

Follow the guidelines below if you’re building a home, 业务, or other structure near pad-mounted electrical equipment.

Pad-mounted设备

You must maintain at least 10 feet between the front (doors) of any pad-mounted equipment, 比如变压器, 和其他物体. You must maintain at least three feet of clearance from the back of the pad-mounted equipment.

Leave at least 10 feet of clearance above electrical equipment. For transformers that handle more than 1,千伏安(千伏安), leave at least 20 feet of overhead clearance.

Ask hg8868皇冠下载 for clarification if you have any questions.

不易燃的墙

可燃结构 房屋、车库和其他建筑物 must be at least 10 feet from pad-mounted transformers. For non-combustible structures, this clearance can be reduced to three feet. A 10-foot clearance is still required in front, 每一边, 以及任何门的垂直方向, 可操作的窗口, 进气口, 或者出口路径 located on a non-combustible wall or surface.

不燃墙体必须具备:

• A one-hour fire rating for most commercial and industrial buildings.
• A three-hour fire rating for homes and 业务es where people might be sleeping (like hotels).

例外: Non-可操作的窗口s (that don’t open) installed in a non-combustible wall require a 10-foot clearance in front but only 3 feet 每一边.

防火屏障

If it is not possible or practical to provide the required clearance between electrical equipment and a combustible building, the customer can install a fire-resistant barrier built of non-combustible materials that meets hg8868皇冠下载’s requirements and all applicable building codes.

Acceptable fire-resistant barriers are free-standing walls made of brick, 混凝土砌体单元块, or concrete that are located between the pad-mounted equipment and a combustible building or other surface.

Consider the following when building a fire-resistant barrier:

• Make sure the height and length of the barrier meet the requirements of each application.
• Allow space for reasonable variations in the size of the equipment in case it needs to be replaced in the future.
• The 10-foot clearance is measured as the distance between the nearest point on the equipment and the wall, 开放, 或者出口路径.