Mich. Admin. Code R. 408.41725 - Wiring; attachment plug receptacles; extension and trailing cords; handlamps; portable electric tools used in wet environment; convertor supplying equipment at more than 300 volts
Rule 1725.
(1)
When electrical wiring is used in a tank or other confined space, a properly
identified disconnect switch shall be provided at the entrance.
(2) A receptacle for an attachment plug shall
meet all of the following requirements:
(a)
Be of the concealed contact type.
(b) Have a contact for extending ground
continuity.
(c) Be designed and
constructed so that the plug may be removed without leaving any live parts
exposed to contact.
(d) Not be
capable of receiving attachment plugs for a voltage, frequency, or type of
current different from that for which the receptacle is intended, nor shall a
plug of a different style be forced into a receptacle.
(3) An extension cord used with a portable
electric tool or appliance shall be a 3-wire type.
(4) Conductors supplying temporary wiring
shall be the minimum protective qualities of type NM wire for use indoors, or
type UF wire for use outdoors.
(5)
A brass shell, paper lined lamp holder and a pintype lampholder which damages
the insulation shall not be used.
(6) Wiring for temporary lighting in excess
of 12 volts used on barricades, fences, and sidewalk coverings shall be
protected against abrasion of accidental damage to the insulation.
(7) Trailing cords and extension cords shall
meet all of the following:
(a) Be protected
against damage.
(b) Hung in a
manner which does not damage the covering.
(c) Retain their insulating value and
dielectric and physical strength when spliced.
(d) Be insulated to prevent shock or
shorts.
(e) Have a plug body or
receptacle which is either molded to the cord or is equipped with a cord clamp
to prevent strain on the terminal screws, or a receptacle installed in a steel
box with a cover and cord clamp.
(8) A portable handlamp shall be made of
molded composition or other approved material and shall have a molded handle
with bulb guard attached to it.
(9)
A portable light used in moist or other hazardous areas, such a drum, tank, or
vessel, shall be operated at a maximum of 12 volts, or shall be protected by an
approved ground-fault interrupter.
(10) A portable electric tool used in a wet
atmosphere or environment shall be protected by an approved ground-fault
interrupter.
(11) An attachment
plug or other connector supplying equipment at more than 300 volts shall be of
the skirted type or shall be otherwise designed to confine any arcs.
Notes
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