§ 7.65. Critical characteristics.
54 words·~1 min read·
/us/cfr/t30/s§ 7.65·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
The following critical characteristics shall be inspected or tested on each blasting unit to which an approval marking is affixed:
(a)The output current.
(b)The voltage cut-off time.
(c)The components that control voltage and current through each making and breaking electric contact.
(d)Operation of the visual indicator and the firing switch.