Deals with the safety of electric fence energizers, the rated voltage of which is not more than 250 V and by means of which fence wires in agricultural, feral animal control and security fences may be electrified or monitored. Experts in IEC SC 61H (Safety of electrically-operated farm appliances) say that "in addition to the safety requirements for electric fence energizers, this part of the IEC 60335-2 series also contains recommendations concerning the construction of electric security fences. The standard recognizes the internationally accepted level of protection against hazards such as electrical, mechanical, thermal, fire and radiation of appliances when operated as in normal use taking into account the manufacturer's instructions. It also covers abnormal situations that can be expected in practice."