Which department should I look for when the voltage is low?

Legal analysis: if the voltage is low, call the power grid company, which is responsible for power supply. You can consult 95598.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 938 The contents of a realty service contract generally include service items, service quality, service fee standards and collection methods, use of maintenance funds, management and use of service places, service term, service handover and other terms.

Article 942 A realty service provider shall, in accordance with the agreement and the nature of the use of the property, properly repair, maintain, clean, afforest and manage some owners in the realty service area, maintain the basic order of the realty service area, and take reasonable measures to protect the personal and property safety of the owners.