ハイマスト照明総合ガイド 2022 What Is High Mast Lighting? The high mast lighting is a high pole with lighting attached to the top pointing towards the ground. This type of high mast light is often used to illuminate large areas from a very high mounting height. Typically on poles ranging in height from 50ft to 150ft are mounted to those poles via fixed rings or lowering devices. Commonly…