Original Version
Rule 54.7-A
54.7
Climbing
Space (Wood Crossarm Construction)
3. Allowable Climbing Space Obstructions: Allowable climbing
space obstructions are:
(a) Crossarms and
their supporting members.
(b) Insulators
and their attaching brackets which support line conductors may extend
one–half of their diameter into the climbing space.
(c) Conductors
may extend one–half of their diameter into the climbing space.
(d) Suitably protected (covered only by
wood, see Rule 22.8):
1)
Vertical
risers; or
2) Vertical runs; or
3) Ground wires.
Such risers, runs,
and grounds are allowable provided that not more than one is installed in any
4–foot section of climbing space.
(e) Guys
(except those guys metallically contacting metal pins or deadend
hardware as specified in Rule 52.7–D). However, not more than two guys having a
vertical separation of 18 inches or less can be installed in any
4–foot section of climbing space.
(f) Street
light brackets may extend one–half their diameter into climbing
space. Associated street light
bracket struts are allowed in climbing space.
(g) Operating
rods (e.g. switch rods) may extend one–half their diameter into climbing
space.
(h) Band(s),
limited to 6 inches in total width are allowed in any 24‑inch section of
climbing space. These limitations
are excluded for pole stubbing and pole splicing bands when pole step
provisions are installed.
(i) Pole restoration materials are allowed in climbing space
provided pole steps are placed in the restoration area as part of the
process. Pole stepping shall be in
accordance with Rule 91.3‑B.
(j) Bolts and
their washers. However, bolts
bonded to or used for the attachment of deadend
hardware of circuits above 750 volts in wood crossarm configuration that
project into the climbing space shall be covered with a non‑conductive
material as specified in Rule 22.8‑C. If such bolts are bonded, a positive
electrical contact shall be made.
EXCEPTIONS: The covering of bolts required by this
rule shall not apply to:
1) Bolts
associated with circuits of more than 7500 volts when located at the top level
of a pole.
2) Bolts
associated with brackets and non–wood crossarms.
Strikeout and Underline Version
Rule 54.7 A
3. Allowable Climbing Space Obstructions: Allowable climbing
space obstructions are:
(3) Allowable Climbing
Space Obstructions: Allowable climbing space obstructions are:
(a) Crossarms and
their supporting members.
(b) Insulators and their attaching brackets which
support line conductors may extend
one–half of their diameter into the climbing space.
(c) Conductors may extend one–half of their diameter into the climbing space.
(d) Suitably protected (covered only by wood, see Rule 22.8):
1) Vertical risers; or runs covered
only
by wood (see Rule 22.8‑B);
2) Vertical
runs; or Ground wires covered
by
wood per Rule 22.8‑A1;
3) Ground wires covered by plastic, or other non‑conductive material no greater
than one‑half inch in diameter (see Rule 22.8‑A3).
Such risers, runs,
and grounds are allowable provided that not more than one is installed in any 4–foot section of climbing space.
(e) Guys (except those guys metallically contacting metal pins or deadend hardware as specified in Rule 52.7–D). However,
not more than two
guys having a vertical
separation of 18 inches or less can be installed in
any
4–foot section of climbing space.
(f) Street light brackets may extend one–half their diameter into climbing space. Associated street light bracket struts are allowed in climbing space.
(g) Operating rods (e.g.
switch rods) may extend one–half their diameter into climbing
space.
(h) Band(s),
limited to
6 inches in
total width are allowed in
any
24‑inch section of climbing
space. These limitations are excluded for pole stubbing and
pole splicing bands when pole step provisions are installed.
(i) Pole restoration
materials are allowed in climbing space provided pole steps are placed in the restoration area as part of the process. Pole stepping shall be in accordance with
Rule
91.3‑B.
(j) Bolts and their washers. However, bolts bonded to or used for the attachment of deadend hardware of circuits above 750 volts in wood crossarm configuration that project into the climbing space shall be covered with a non‑conductive material as specified in Rule 22.8‑C. If such bolts are bonded,
a positive electrical contact shall be made.
EXCEPTIONS: The covering of bolts required by this rule shall not apply to:
1) Bolts associated with circuits of more than 7500 volts when located at the top level of a
pole.
2) Bolts associated with brackets and non–wood crossarms.
Reasonable efforts shall be made to
avoid installing the above listed
allowable obstructions within the climbing space.
Final Version
Rule 54.7 A
(3) Allowable Climbing Space Obstructions: Allowable climbing space obstructions are:
(a) Crossarms and their supporting members.
(b) Insulators and their attaching brackets which
support line conductors may extend
one–half of their diameter into the climbing space.
(c) Conductors may extend one–half of their diameter into the climbing space.
(d) Suitably protected:
1) Vertical risers or runs covered
only
by wood (see Rule 22.8‑B);
2) Ground wires covered by wood
per
Rule 22.8‑A1;
3) Ground wires covered by plastic, or other non‑conductive material no
greater than one‑half inch
in diameter (see Rule 22.8‑A3).
Such risers, runs,
and grounds are allowable provided that not more than one is installed in any 4–foot section of climbing space.
(e) Guys (except those guys metallically contacting metal pins or deadend hardware as specified in Rule 52.7–D). However,
not more than two
guys having a vertical
separation of 18 inches or less can be installed in
any
4–foot section of climbing space.
(f) Street light brackets may extend one–half their diameter into climbing space.
Associated street light bracket struts are allowed in climbing space.
(g) Operating rods (e.g.
switch rods) may extend one–half their diameter into climbing
space.
(h) Band(s),
limited to
6 inches in
total width are allowed in
any
24‑inch section of climbing
space. These limitations are excluded for pole stubbing and
pole splicing bands when pole step provisions are installed.
(i) Pole restoration materials are allowed in climbing space provided pole steps are placed in
the
restoration area as part of the process. Pole stepping shall be in accordance with
Rule
91.3‑B.
(j) Bolts and their washers. However, bolts bonded to or used for the attachment of deadend hardware of circuits above 750 volts in wood crossarm configuration that project into the climbing space shall be covered with a non‑conductive material as specified in Rule 22.8‑C. If such bolts are bonded,
a positive electrical contact shall be made.
EXCEPTIONS: The covering of bolts required by this rule shall not apply to:
1) Bolts associated with circuits of more than
7500 volts when located at the top level of a pole.
2) Bolts associated with brackets and non–wood crossarms.
Reasonable efforts shall be made to
avoid installing the above listed
allowable obstructions within the climbing space.