Rule 21.0

21.0    Districts mean areas as defined in the following:

A.    Urban Districts mean thickly settled areas (whether in cities or suburbs) or where congested traffic often occurs. Highways on which traffic is often very heavy or locations such as picnic grounds, summer resorts, etc., where people congregate seasonally, are considered as urban.

B.    Rural Districts mean all areas not urban, usually in the country but in some cases within city limits.

C.    Loading Districts mean those areas in which the specified loadings of Rule 43 apply and are known as “Heavy” and “Light” loading districts.

Strikeout and Underline Version

Rule 21.0

21.0    Districts mean areas as defined in the following:

A.    Urban Districts mean thickly settled areas (whether in cities or suburbs) or where congested traffic often occurs. Highways on which traffic is often very heavy or locations such as picnic grounds, summer resorts, etc., where people congregate seasonally, are considered as urban.

B.    Rural Districts mean all areas not urban, usually in the country but in some cases within city limits.

C.    Loading Districts mean those areas in which the specified loadings of Rule 43 apply and are known as “Heavy” and “Light” loading districts.

20.9    Crossarm or Arm means a horizontal support attached to poles or structures generally at right angles to the conductor supported.

A.    Combination Arm means a crossarm supporting supply conductors of 0 - 750 volts and supply conductors of 750 - 7,500 volts.

B.    Related Buck Arm means a crossarm used to change the direction of all or a part of the conductors on the line arm immediately above or below. A buck arm is generally placed at right angles to the line arm.

C.    Clearance Arm means a crossarm supporting conductors installed on a pole of another line for the purpose of maintaining the prescribed clearances of this order which, if the other line did not exist, could be maintained without such clearance arm.

D.    Guard Arm means a crossarm installed on a pole not more than 4 inches directly above and approximately parallel to the messenger, cable or conductors being guarded. Guard arms shall not be used to support conductors or other line facilities except as specifically provided in these rules (see Rules 84.8-B2c and 87.7-B).

Final Version

Rule 21.0

21.0    Crossarm or Arm means a horizontal support attached to poles or structures generally at right angles to the conductor supported.

A.    Combination Arm means a crossarm supporting supply conductors of 0 - 750 volts and supply conductors of 750 - 7,500 volts.

B.    Related Buck Arm means a crossarm used to change the direction of all or a part of the conductors on the line arm immediately above or below. A buck arm is generally placed at right angles to the line arm.

C.    Clearance Arm means a crossarm supporting conductors installed on a pole of another line for the purpose of maintaining the prescribed clearances of this order which, if the other line did not exist, could be maintained without such clearance arm.

D.    Guard Arm means a crossarm installed on a pole not more than 4 inches directly above and approximately parallel to the messenger, cable or conductors being guarded. Guard arms shall not be used to support conductors or other line facilities except as specifically provided in these rules (see Rules 84.8-B2c and 87.7-B). .