NM CID ES-3 Practice Questions - New Mexico CID ES-3 Low Voltage Special Systems (Under 50 Volts) Examination Exam

Only when the Authority Having Jurisdiction writes a special condition Whenever the secondary current can exceed 8 amperes When supplied by a transformer whose primary exceeds 150 volts to ground, when the transformer supply is ungrounded, or when installed outdoors as overhead conductors Never; systems under 50 volts are exempt from Article 250