GB 50052-2009 第3.0.6条
| Special provisions for hotel buildings: For hotels with a large number of single-phase loads (such as guest room lighting and sockets), three-phase loads should be reasonably distributed so that the three-phase load unbalance does not exceed 15% (implemented in accordance with Article 3.0.5 of GB 50052-2009, but for hotel design it is recommended to control the phase current unbalance to ≤10%).