Current through Register 1531, September 27, 2024
(1)
Supporting Structures.
(a)
Warning Signs and
Marking.
1. Structures. If poles
and structures are of any material except wood, they shall be plainly and
conspicuously marked "Dangerous. Keep Away" in compliance with M.G.L. c. 166,
§ 34.
All structures supporting wires over streets or buildings or
structures on private property shall be plainly marked with the name or
initials of the owner of the structure in compliance with M.G.L. c. 166,
§§ 31 and 36.
All structures should be marked or numbered so as to facilitate
identification by employees authorized to work thereon.
Date of installation of such structures should be recorded by
the owner.
2. Bridges.
Structures attached to bridges for the purpose of supporting conductors shall
be plainly marked with the name or initials of the utility responsible for the
attachment and in addition by a warning sign entitled "Dangerous. Keep Away,"
or its equivalent.
3. Equipment.
All transmission line switching equipment should be marked or numbered so as to
facilitate identification by employees authorized to work thereon.
(b)
Steps. Steps closer than 8 feet from the ground or
other readily accessible places shall not be permanently placed on
structures.
(c)
Structure Guards. Where structures are subject to
damage because of their location in public parking lots, warehousing, or other
are as, the structures should be adequately protected with guards.
(2)
Guying.
(a)
Point of Attachment. The guys should be attached to
the structure as near as practicable to the center of the conductor load to be
sustained but the insulation afforded by wood crossarms and poles shall not be
reduced any more than is necessary.
(b)
Guy Fastenings.
At attachments, stranded guys should be protected by thimbles or other suitable
means.
(c)
Guy
Guards. The ground end of all guys attached to ground anchors
exposed to traffic shall be provided with a substantial and conspicuous guard
not less than eight feet long.
(d)
Anchor Rods. Anchor rods should be installed so as to
be in line with the pull of the attached guy when under load. The anchor rods
shall have an ultimate strength in the eye and shank equal to or greater than
that required of the guy.
(3)
Insulators in Guys Attached
to Structures.
(a)
Material. Guy insulators where used shall be made of
fiberglass, wood or other material of suitable mechanical and electrical
properties.
(b)
Electrical Properties. Guy insulators shall have a dry
flash-over voltage at least double the normal phase to phase voltage and a wet
flash-over voltage at least as high as the normal phase to phase
voltage.
(c)
Mechanical
Strength. Guy insulators shall have a mechanical strength at least
equal to that required of the guys in which they are installed.
(4)
Mechanical
Protection of Cable Risers. Where within eight feet of the ground,
cable risers in unguarded areas shall be protected by a covering which gives
suitable mechanical protection. This covering may be omitted from wires used to
connect the structure or lightning protection wires to ground.
