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(a) If the transmission line has any under-built distribution attached to the same pole or structure, the shield wire system shall be bonded to the grounding conductor of the distribution neutral at each pole or structure.
(b) The under-built distribution neutral may be connected to its own made or existing ground electrode at each pole or structure.
PSC 114.099 Note Exception: Shield wires that are segmented and isolated from ground at a particular pole or structure need not follow this rule.
2. The shield wire of the transmission system shall not be used as the distribution neutral conductor in lieu of the installed distribution neutral conductor.
PSC 114.099 History History: CR 07-021: cr. Register January 2008 No. 625, eff. 2-1-08; CR 13-039: r. and recr. Register June 2014 No. 702, eff. 7-1-14; number (1) to (3) under s. 13.92 (4) (b) 1., Stats., Register March 2015 No. 711; CR 18-007: am. (intro.), (1) (intro.), (2), (3) (intro.) Register February 2020 No. 770, eff. 3-1-20.
Part 1. Safety Rules for the Installation
and Maintenance of Electric Supply
Stations and Equipment
Section 10. Purpose and Scope of Rules
PSC 114.102 PSC 114.102 Application of rules. [NESC 102, p. 39] (Change) Change paragraph 102 to read:
102. Application of rules
The general requirements for application of these rules are contained in s. PSC ll4.005.
PSC 114.102 History History: CR 18-007: cr. Register February 2020 No. 770, eff. 3-1-20.
PSC 114.103 PSC 114.103 Referenced sections. [NESC 103, p. 39] (Change) Change paragraph 103 to read:
103. Referenced sections
The Introduction (Section 1) as amended by s. PSC 114.010, Definitions (Section 2) as amended by Section 2 of Chapter PSC 114, List of Referenced Documents (Section 3) and Grounding Methods (Section 9) as amended by Section 9 of Chapter PSC 114 shall apply to the requirements of Part 1.
PSC 114.103 History History: CR 18-007: cr. Register February 2020 No. 770, eff. 3-1-20.
PSC 114.114 PSC 114.114 Fire-extinguishing equipment. [Follows NESC 113, p. 46] (Addition) Following NESC 113 add paragraph 114 to read:
114. Fire-extinguishing equipment
Portable or permanent fire-extinguishing equipment approved for the intended use shall be conveniently located inside control buildings or similar buildings and conspicuously marked.
PSC 114.114 Note Exception: This rule does not apply to unmanned, outdoor substations that do not contain a control building or similar building. This rule is not intended to require permanently installed fire extinguishers or fire extinguishment system in all electric supply stations or in all areas of large, complex stations.
PSC 114.114 History History: CR 18-007: cr. Register February 2020 No. 770, eff. 3-1-20.
Part 2. Safety Rules for the Installation
and Maintenance of Overhead Electric Supply
and Communication Lines
Section 20. Purpose, Scope and Application of Rules
PSC 114.202 PSC 114.202 Application of rules. [NESC 202, p. 77] (Change) Change the paragraph 202 to read:
202. Application of rules
The general requirements for application of these rules are contained in s. PSC ll4.005. However, when a structure is replaced, arrangement of equipment shall conform to the 2017 edition of Rule 238C.
PSC 114.202 History History: CR 07-021: cr. Register January 2008 No. 625, eff. 2-1-08; CR 13-039: r. and recr. Register June 2014 No. 702, eff. 7-1-14; CR 18-007: am. Register February 2020 No. 770, eff. 3-1-20.
Section 21. General Requirements
PSC 114.210 PSC 114.210 Referenced sections. [NESC 210, p. 78] (Change) Change paragraph 210 to read:
210. Referenced sections
The Introduction (Section 1) as amended by s. PSC 114.010, Definitions (Section 2) as amended by Section 2 of Chapter PSC 114, List of Referenced Documents (Section 3) and Grounding Methods (Section 9) as amended by Section 9 of Chapter PSC 114 shall apply to the requirements of Part 2.
PSC 114.210 History History: CR 07-021: cr. Register January 2008 No. 625, eff. 2-1-08; CR 13-039: r. and recr. Register June 2014 No. 702, eff. 7-1-14; CR 18-007: am. (intro.) Register February 2020 No. 770, eff. 3-1-20.
PSC 114.215 PSC 114.215 Grounding of circuits, supporting structures, and equipment. [NESC 215C1, p.80] (Addition) Following NESC 215C1 Exception 3, add Exception 4 to read:
PSC 114.215 Note Exception: This requirement does not apply to supply cables meeting Rule 230C3 or communication cables.
PSC 114.215 History History: CR 13-039: cr. Register June 2014 No. 702, eff. 7-1-14; cr. PSC 114.215 (title) under s. 13.92 (4) (b) 2., Stats., renum. (1) and (2) from PSC 114.215C4b and 114.215C5b under s. 13.92 (4) (b) 1., Stats., Register March 2015 No. 711; CR 18-007: r. and recr. Register February 2020 No. 770, eff. 3-1-20.
PSC 114.219 PSC 114.219 Marking of poles and structures carrying high voltage supply lines. [Follows NESC 218, p. 84] (Addition) Following NESC 218, add section 219 to read:
219. Marking of poles and structures carrying high voltage supply lines.
A. Every corporation, company or person constructing, operating or maintaining an electric transmission line with a voltage of 2,000 or more between conductors and the ground shall place warning signs from 1.2 to 2.45 m (4 to 8 ft) above the ground upon all poles or other structures supporting the line.
Exception: Existing poles and structures which were required to be signed by s. 196.67, stats. and were installed prior to January 1, 1995, are permitted to comply with the warning sign requirements which existed on December 31, 1994.
B. Warning signs installed as replacements or new facilities on overhead electrical supply line poles and structures shall comply with the following standards:
1. Warning signs which meet the requirements as to format and color of American National Standards Institute standard ANSI Z535.2-2011 for safety signs.
2. The overall dimensions of these signs shall not be less than 25.4 cm by 17.78 cm (10 in by 7 in) except that in those situations where use of a sign this size is not practical, two or more signs not smaller than 17.78 cm by 12.7 cm (7 in by 5 in) may be substituted.
PSC 114.219 Note Exception: Existing poles and structures installed prior to July 1, 2003, are permitted to continue to use the “Danger - High Voltage" sign format meeting the requirements of the prior rule until such signs are replaced.
PSC 114.219 Note Note 2: This rule amends and expands the application of the warning sign requirements of s. 196.67, stats., as it existed prior to its revision which became effective on January 1, 1995. In 1993, this statute was revised by deleting the specified location provisions limiting the required signing to certain poles. As a result, all poles and structures supporting lines with a voltage of 2,000 or more installed after the effective date of January 1, 1995, are required to carry warning signs. See s. 196.67, stats.
PSC 114.219 History History: CR 07-021: cr. Register January 2008 No. 625, eff. 2-1-08; CR 13-039: r. and recr. Register June 2014 No. 702, eff. 7-1-14; CR 18-007: am. Register February 2020 No. 770, eff. 3-1-20.
Section 23. Clearances
PSC 114.219 Note Note 2: The specification of clearances in Rules 232, 233, and 234, first adopted in the NESC-1990, and continued in the 1997 edition of the NESC adopted herein, have been revised in both concept and content to reflect the new Uniform System of Clearances approach which is described in Appendix A of NESC-1990, NESC-1993, NESC-1997, NESC-2002, NESC-2007, NESC-2012 and NESC-2017. Because the approach and the application of the rules have been revised, it must be understood that clearance values of editions of the national and state codes prior to 1990 cannot be directly compared to those of editions of the codes after 1990. See Appendix A of NESC-1990, NESC-1993, NESC-1997, NESC-2002, NESC-2007, NESC-2012, or NESC-2017.
PSC 114.230 PSC 114.230 General.
PSC 114.230(1)(1)Application. [NESC 230A1 and 230A2, p. 90] (Omission) Rules 230A1and 230A2 of the NESC-2017 are omitted and not incorporated as part of the Wisconsin State Electrical Code, Volume 1.
PSC 114.230(2) (2)Maintenance of clearances and spacings. [NESC 230I, p. 94] (Change) Change the Note in paragraph I to read:
PSC 114.230 Note Note 2: See s. PSC 114.005 (2) to determine the applicable edition.
PSC 114.230 History History: CR 07-021: cr. Register January 2008 No. 625, eff. 2-1-08; CR 13-039: r. and recr. Register June 2014 No. 702, eff. 7-1-14; cr. PSC 114.230 (title) under s. 13.92 (4) (b) 2., Stats., renum. (1) and (2) from PSC 114.230A and 114.230I under s. 13.92 (4) (b) 1., Stats., Register March 2015 No. 711; CR 18-007: am. Register February 2020 No. 770, eff. 3-1-20.
PSC 114.231 PSC 114.231Clearance of supporting structures from other objects. [NESC 231B1, p. 96] (Change) Change paragraph 1 to read:
1. Where there are curbs: supporting structures, support arms, anchor guys, or equipment attached thereto, up to 4.6 m (15 ft) above the road surface shall be located a sufficient distance behind the curb to avoid contact by ordinary vehicles using and located on the traveled way. For a redirectional curb, such distance shall be not less than 150 mm (6 in) from the street side of the curb.
PSC 114.231 History History: CR 18-007: cr. Register February 2020 No. 770, eff. 3-1-20.
PSC 114.232 PSC 114.232 Vertical clearances of wires, conductors, cables, and equipment above ground, roadway, rail, or water surfaces.
PSC 114.232(1)(1)Table PSC 114.232-1. [NESC, table 232-1, pp. 99- 102: metric; pp. 103-106: feet]
(a) Footnote 18 [NESC, Table 232-1, p. 101: metric; p. 105 feet] Change Footnote 18 to read as follows:
18For uncontrolled water flow areas, the surface area and clearances shall be based on the ordinary high water mark.
(b) Footnote 21 [NESC, Table 232-1, p. 102 metric; p. 106: feet] Change Footnote 21 to read as follows:
21Where the US Army Corps of Engineers, or the state, or surrogate thereof has issued a crossing permit, the greater clearances of that permit or this code shall govern.
PSC 114.232(1)(c) (c) Footnote 25 [NESC, Table 232-1, p. 102: metric; p. 106: feet] (Change) Change Footnote 25 to read as follows:
25Water areas not suitable for sailboating include portions of meandering rivers, streams and canals where the widest width does not exceed 50 m (165 feet) within any unobstructed,1.6-km (1-mile) long segment that includes the crossing or where the width does not exceed 50 m (165 feet) within the surface area of any segment less than 1.6-km (1-mile) long on the line-crossing side of an overwater obstruction. All rivers, streams, canals and creeks as defined by the Wisconsin department of natural resources (DNR) which meet this definition are considered not suitable for sailing.
PSC 114.232 Note Exception: Regardless of width, the clearance over a canal, river, or stream normally used to provide access for sailboats to a larger body of water shall be the same as that required for water areas suitable for sailboating on the larger body of water. This also applies where a sailboat may be transported across such water with its mast extended.
PSC 114.232(1)(d) (d) Footnote 25 [NESC, Table 232-1, p. 102: metric; p. 106: feet] (Addition) Add the reference to Footnote 25 in the NESC-2017 Table 232-1 (both the metric and feet sections) on to the sailboating category titles of rows 6 and 7. It applies to all clearances in those rows.
PSC 114.232(1)(e) (e) Footnote 27 [Follows NESC, Table 232-1 Footnote 26, p. 102: metric; p. 106: feet] (Addition) Following Footnote 26 for Table 232-1 (for both the metric and feet sections), add Footnote 27 which reads as follows:
27A diagonal clearance equal to the required vertical clearance shall be maintained to uneven or sloping terrain within a horizontal distance of 3/4 (75%) of the required vertical clearance. All distances shall be measured from the conductors in their wind-displaced position as defined in NESC Rule 234A2.
PSC 114.232(1)(f) (f) Footnote 27 [Follows NESC, Table 232-1 Footnote 26, p. 102: metric; p. 106: feet] (Addition) Add the reference to Footnote 27 in the Table 232-1 (both the metric and feet sections) to the conductor category titles of columns 3, 4 and 5. It applies to all clearances in those columns.
PSC 114.232(2) (2)Table PSC 114.232-2. [NESC, Table 232-2, p. 108
PSC 114.232(2)(metric)(metric) and p. 111 (feet)] (Change). Change Footnote 8 to read as follows:
8Where the US Army Corps of Engineers, or the state, or surrogate thereof has issued a crossing permit, the greater clearances of that permit or this code shall govern.
PSC 114.232(3) (3)Table PSC 114.232-3. [NESC, table 232-3, p. 113] (Change). Change Footnote 3 to read:
3For controlled impoundments, the surface area and corresponding clearances shall be based upon the design high water mark. For other waters, the surface area and clearances shall be based on the ordinary high water mark. The clearance over rivers, streams, and canals shall be based upon the largest surface area of any 1.6-km-long (1 mi) segment which includes the crossing. The clearance over a canal, river or stream normally providing access for sailboats to a larger body of water shall be the same as that required for the larger body of water.
PSC 114.232 History History: CR 07-021: cr. Register January 2008 No. 625, eff. 2-1-08; CR 13-039: r. and recr. Register June 2014 No. 702, eff. 7-1-14; cr. PSC 114.232 (title) under s. 13.92 (4) (b) 2., Stats., number (1) to (3) under s. 13.92 (b) (b) 1., Stats., Register March 2015 No. 711; CR 18-007: am. (1) to (3) Register February 2020 No. 770, eff. 3-1-20.
PSC 114.234 PSC 114.234 Clearance of wires, conductors, cables, and equipment from buildings, bridges, rail cars, swimming pools, and other installations.
PSC 114.234(1)(1)Clearances. [NESC 234C1a, p. 128] (Change) Change paragraph (1) (a) to read:
(a) Clearances. Unguarded or accessible wires, conductors, cables, or rigid live parts may be located adjacent to buildings, signs, billboards, chimneys, radio and television antenna, tanks, flagpoles and flags, banners and other installations and any projections therefrom. The vertical and horizontal clearances of such rigid and nonrigid parts shall be not less than the values in Table 234-1 when at rest under the conditions specified in Rule 234A1.These facilities may be installed beside, over or under buildings, building projections and other installation, as illustrated in Figs. 234-1(a) and 234-1(b) and 234-1(c). Buildings, signs, billboards, chimneys, radio and television antennas, tanks, flagpoles and flags, banners and other installations and any projections therefrom shall not be located near existing wires, conductors, cables or rigid live parts if doing so results in clearances less than the values given in Table 234-1.
PSC 114.234(2) (2)Transmission lines over dwelling units. [Follows NESC 234C1b, p. 128] (Addition) Following 234C1b, add the following paragraph c:
c. Transmission lines over dwelling units.
No utility may construct conductors of supply lines designed to operate at voltages in excess of 35 kV over any portion of a dwelling unit. This provision also applies to line conductors in their wind-displaced position as defined in Rule 234A2.
PSC 114.234 Note Note 2: It is the intent under s. SPS 316.225(6) that the public not construct any portion of a dwelling unit under such lines.
PSC 114.234 Note Note 2: The term “dwelling unit" has the meaning given in ch. SPS 316, which adopts by reference the definitions in NEC-2008.
PSC 114.234 Note Note 2: See s. SPS 316.225(6) Clearance Over Buildings and Other Structures, which refers to ch. PSC 114 regarding clearance of conductors over 600 volts and the prohibition of dwellings under or near overhead lines.
PSC 114.234(3) (3)Service-drop conductors, including drip loops shall have clearance of not less than the following. [NESC 234C3d, p.129] (Change) Change Exception 2 (a) to read:
PSC 114.234 Note Exception 2(a): 2.45 m (8 feet). This clearance may be reduced to 0.90 m (3 ft) for supply conductors limited to 300 volts to ground and communication conductors and cables if the roof has a slope of not less than 1 (vertical) to 3 (horizontal).
PSC 114.234(4) (4)Clearance of lines near stored materials. [Follows NESC 234C5, p. 129] (Addition) Following 234C5, add the following paragraph 6 and note:
6. Clearance of Lines Near Stored Materials
Lines, under wind-displaced conditions stated in Rule 234A2, shall not be run over designated material storage areas where material is regularly stored and handled by cranes, dump trucks, elevators or other types of high machinery unless the clearance of such lines is adequate to permit full use of the equipment. Material which requires the use of such high machinery shall not be stored near or under existing lines.
PSC 114.234 Note Note 2: See NESC Rule 234F for Grain Bin clearances.
PSC 114.234(5) (5)Clearance of supply lines near fuel storage tanks. [Follows NESC 234C5, p. 129] (Addition) Following NESC 234C5 and the PSC 114 addition of paragraph 6, add the following paragraph 7 and exceptions 1 and 2 to read:
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Published under s. 35.93, Stats. Updated on the first day of each month. Entire code is always current. The Register date on each page is the date the chapter was last published.