SU25 GO95 rule 52.4

Crossarms Supporting Conductors of More than 750 volts and arms supporting equipment connected to or containing conductors of more than 750 volts shall be marked, by methods described in Rule 52.4-A, as specified in Rules 52.4-B, 52.4-C and 52.4-D with the exceptions specified in Rule 52.4-E

A. Methods

Crossarms required by these rules to be marked shall have a single sign or pair of signs showing the words “HIGH” and “VOLTAGE” in letters not less than 3 inches in height. These signs shall be placed on the face and back of such crossarms, unless exempted by provisions of Rules 52.4-B, C, D and E. Such signs shall be of weather and corrosion-resisting material, solid or with letters cut out there from and clearly legible. In lieu of marking the crossarm, Rule 51.6-A may be applied.

B. Crossarms Supporting Conductors Of More Than 750 Volts

All crossarms supporting conductors of more than 750 volts shall be marked in accordance with Rule 52.4-A unless modified by Rules 52.4-C, D, and E.

C. Combination Crossarms Supporting Conductors Of More Than 750 Volts And Conductors Of 750 Volts Or Less

Combination arms shall be marked as high voltage on the portions supporting conductors of 750-7500 volts only.

D. Crossarms Supporting Miscellaneous Equipment

Included in this group are crossarms supporting transformers, cutouts, regulators, oil switches, air switches, capacitors, series controllers, and similar apparatus which are connected to or are a part of a circuit of more than 750 volts. These crossarms shall be marked as specified in Rule 52. 4-A.

(1) Hanger Arms, cutout Arms, and similar Apparatus:

Where high voltage signs are used as the method of marking, they are required on the face toward the climbing space of hanger arms or of arms supporting cutouts, excepting that signs are not required on any arm supporting cutouts only where such cutout arm is within 30 inches vertically from either a line arm or a hanger arm in which is marked as high voltage

High voltage signs are required on the face toward climbing space of hanger arms supporting cutouts, except that signs are not required on any crossarm supporting cutouts where such cutout arm is within 30 inches vertically from either a line arm or a hanger arm which is marked as high voltage.

(2) Heel Arms: Heel arms, while treated in these Rules as supporting high voltage equipment, are not required to be marked as high voltage.

(1) Double Arms: High voltage signs are not required on the inside faces of double arms.

(2) Brackets: Where extension brackets or clearance brackets are used to extend or supplement crossarms, and support conductors of more than 750 volts, such supplementary supports are not required to be marked as high voltage.

(3) Metal Poles: Metal poles with crossarms supporting conductors of more than 750 volts, may, in lieu of marking crossarms, be marked in accordance with the provisions of Rule 51.6-A.

(4) Metal crossarms: Where metal crossarms supporting 65 conductors of more than 750 volts are attached to wood or metal poles, the poles may be marked in accordance with the provisions of Rule 51.6-A.

~~A. Methods~~

Crossarms required by these rules to be marked shall have a single sign or pair of signs showing the words “HIGH” and “VOLTAGE” in letters not less than 3 inches in height. These signs shall be placed on the face and back of such crossarms, unless exempted by provisions of Rules 52.4-B, C, D and E. Such signs shall be of weather and corrosion-resisting material, solid or with letters cut out there from and clearly legible. ~~In lieu of marking the crossarm, Rule 51.6-A may be applied.~~

~~B. Crossarms Supporting Conductors Of More Than 750 Volts~~

~~All crossarms supporting conductors of more than 750~~ ~~volts shall be marked in accordance with Rule 52.4-A unless modified by Rules 52.4-C, D, and E.~~

~~C. Combination Crossarms Supporting Conductors Of More Than 750 Volts And Conductors Of 750 Volts Or Less~~

~~Combination arms shall be marked as high voltage on the portions supporting conductors of 750-7500 volts only.~~

~~D. Crossarms Supporting Miscellaneous Equipment~~

Included in this group are crossarms supporting transformers, cutouts, regulators, oil switches, air switches, capacitors, series controllers, and similar apparatus which are connected to or are a part of a circuit of more than 750 volts. These crossarms shall be marked as specified in Rule 52. 4-A.

~~(1) Hanger Arms, cutout Arms, and similar Apparatus:~~

Where high voltage signs are used as the method of marking, they are required on the face toward the climbing space of hanger arms or of arms supporting cutouts, excepting that signs are not required on any arm supporting cutouts only where such cutout arm is within 30 inches vertically from either a line arm or a hanger arm in which is marked as high voltage

High voltage signs are required on the face toward climbing space of hanger arms supporting cutouts, except that signs are not required on any crossarm supporting cutouts where such cutout arm is within 30 inches vertically from either a line arm or a hanger arm which is marked as high voltage.

~~(2) Heel Arms:~~ ~~Heel arms, while treated in these Rules as supporting high voltage equipment, are not required to be marked as high voltage.~~

~~(1) Double Arms:~~ ~~High voltage signs are not required on the inside faces of double arms.~~

~~(2) Brackets:~~ Where extension brackets or clearance brackets are used to extend or supplement crossarms, and support conductors of more than 750 volts, such supplementary supports are not required to be marked as high voltage.

~~(3) Metal Poles:~~ ~~Metal poles with crossarms supporting conductors of more than 750 volts, may, in lieu of marking crossarms, be marked in accordance with the provisions of Rule 51.6-A.~~

~~(4) Metal crossarms:~~ ~~Where metal crossarms supporting 65 conductors of more than 750 volts are attached to wood or metal poles, the poles may be marked in accordance with the provisions of Rule 51.6-A.~~