§ 18.24. Electrical clearances.
78 words·~1 min read·
/us/cfr/t30/s§ 18.24·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
Minimum clearances between uninsulated electrical conductor surfaces, or between uninsulated conductor surfaces and grounded metal surfaces, within the enclosure shall be as follows: ::: {width="100%"} ::: {.table_head} Minimum Clearances Between Uninsulated Surfaces ::: ::: {.gpotbl_div} Phase-to-Phase Voltage
(rms)Clearances (inches) Phase-to-Phase Phase-to-Ground or Control Circuit 0 to 250 0.25 0.25 251 to 600 0.28 0.25 601 to 1000 0.61 0.25 1001 to 2400 1.4 0.6 2401 to 4160 3.0 1.4 ::: ::: \[57 FR 61209, Dec. 23, 1992\]