Wisconsin Legislature: SPS 316.230(3)(b)

(3) Arc-fault circuit-interrupter protection. The requirements in 2017 NEC 210.12 (A) do not apply to kitchens.

(4) Branch circuit extensions or modifications — dwelling units and dormitory units. The requirements in 2011 NEC 210.12 (B) and 2017 NEC 210.12 (D) are not included as part of this chapter.

(5) Lighting outlets required. Substitute the following wording for 2011 NEC 210.70 (A) (1): At least one wall switch-controlled lighting outlet shall be installed in every habitable room, kitchen, and bathroom.

(6) Countertop receptacles. The requirements in 2011 NEC 210.52 (A) (4) are not included as part of this chapter.

(7) Garages. Substitute the following wording for 2017 NEC 210.52 (G) (1): In each attached garage and in each detached garage with electric power.

(8) Meeting rooms. The requirements in 2017 NEC 210.71 do not apply to this chapter.

History: CR 08-047: cr. Register February 2009 No. 638, eff. 3-1-09; CR 13-042: r. (2) (a), (c), renum. (2) (b) to (2), r. and recr. (4), renum. (6) to (5), cr. (6) Register November 2013 No. 695, eff. 12-1-13; CR 16-093: r. and recr. (1) to (6), cr. (7), (8) Register June 2018 No. 750, eff. 8-1-18.

SPS 316.220 Branch-circuit, feeder and service calculations.

(1) General. This is a department exception to the requirements in 2011 NEC 220.10: Circuit load calculations may use unit load values lower than those identified in NEC Table 220.12 for lighting loads calculated using the maximum electrical energy conservation values specified under ch. SPS 363 for public buildings and places of employment.

(2) Exception. This is a department exception to the requirements in 2011 and 2017 NEC 220.40: Exception: Under the supervision of a Wisconsin professional engineer, architect or designer of electrical systems, the feeder or service size may be computed using diversity factors or historical data of a similar type of building, other than one- and 2-family dwelling units.

History: CR 08-047: cr. Register February 2009 No. 638, eff. 3-1-09; CR 13-042: r. and recr. (1) Register November 2013 No. 695, eff. 12-1-13; CR 16-093: am. (1), (2) Register June 2018 No. 750, eff. 8-1-18.

SPS 316.225 Outside branch circuits and feeders.

(1) Clearances from buildings for conductors not over 600 volts. Substitute the following wording for 2011 NEC 225.19 (A) Exception No. 4: The requirement for maintaining the vertical clearance 3 feet from the edge of the roof does not apply to the final conductor span to the building.

(2) Number of supplies. The following are department rules in addition to the requirements in 2011 and 2017 NEC 225.30:

(a) For the purpose of this section, multiple feeders that are supplied from the same distribution point, having a total rating of 300 amperes or more, and that supply not more than 6 disconnecting means grouped at the same location shall be considered as one supply.

(b) Multi-occupancy buildings or structures may have one set of branch circuit conductors installed from a dwelling unit to the second building or structure’s respective occupied space.

(3) Location. This is a department rule in addition to the requirements of 2011 and 2017 NEC 225.32: The building disconnect required by NEC 225.31 shall be located in accordance with s. SPS 316.230 (3).

Note: See ch. PSC 114 regarding clearances of conductors of over 600 volts and for prohibition of constructing dwellings under or near overhead lines.

(4) Clearances over roadways, walkways, rail, water and open land. Substitute the following wording for the note to 2011 and 2017 NEC 225.60 (C): Note: For clearances of conductors of over 600 volts, see ch. PSC 114.

(6) Clearances over buildings and other structures. Substitute the following wording for the note to 2011 and 2017 NEC 225.61 (B): Note: See ch. PSC 114 regarding clearances of conductors of over 600 volts and for prohibition of constructing dwellings under or near overhead lines.

History: CR 08-047: cr. Register February 2009 No. 638, eff. 3-1-09; correction in (4) made under s. 13.92 (4) (b) 7., Stats., Register December 2011 No. 672; CR 13-042: r. (1), renum. (2) to (5) to (1) to (4) and am. (2) (a) Register November 2013 No. 695, eff. 12-1-13; CR 16-093: am. (1), (2) (intro.), (3), (4), (6) Register June 2018 No. 750, eff. 8-1-18.

SPS 316.230 Services.

(1) Number of services.

(a) This is a department informational note to be used under 2011 and 2017 NEC 230.2 (intro.): Note: It is recommended that the electric utility or cooperative supplying electric current be contacted prior to service equipment installations for any special requirements.

(b) Substitute the following wording for NEC 230.2 (B) (2): Two or more service drops or laterals for the same class of service if located more than 150 feet apart, measured in a straight line, and provided that all electrical wiring supplied by each service has no common raceway or connection with any other service.

(c) This is a department rule in addition to the requirements of 2011 NEC 230.2 (B): For a building which is not more than 3 stories in height and which contains only 3 or more attached, vertically separated, side-by-side, or back-to-back dwelling units, with each dwelling unit served by an individual exterior exit within 6 feet of the exit discharge grade, a separate service drop or lateral shall be permitted for each 2 attached units.

(2) Number of service-entrance conductor sets. The requirements specified in 2011 and 2017 NEC 230.40 Exception No. 3 are not included as part of this chapter.

(3) Service equipment — disconnecting means.

(a) General. This is a department rule in addition to the requirements of 2011 and 2017 NEC 230.70: Disconnecting means shall be provided to disconnect the utility wiring from the premises wiring at any point where utility wiring terminates and premises wiring extends overhead or underground to more than one building or structure.

(b) Location. This is a department rule in addition to the requirements of 2011 and 2017 NEC 230.70 (A): Raceways containing service conductors or cables, or service entrance cable not contained within a raceway, may not extend longer than 8 feet into a building to the service disconnect or the first service disconnect of a group of disconnects as permitted by NEC 230.71. The raceways or conductors shall be considered to have entered the building at the point where they pass through the outer surface of the building exterior, except as permitted by NEC 230.6.

(4) Rating of service disconnecting means – 2011 NEC. This is a department rule in addition to the requirements of 2011 NEC 230.79:

(a) Two- or multi-family dwellings. Except as provided in par. (b), for 2-family or multi-family dwellings, the service equipment shall have a rating of not less than 150 amperes, 3-wire or 4-wire. Where the combined rating of all service disconnecting means is 150 amperes or larger, the service or feeder equipment rating for each dwelling unit shall have a rating of not less than 60 amperes.

(b) Exception. Service equipment having a rating of not less than 100 amperes, 3-wire or 4-wire, may be installed in an existing 2-family dwelling only where both of the following conditions are complied with:

1. The load computed in accordance with NEC 220 does not exceed 80 amperes.

2. Specific written approval is granted by the municipal inspection department having jurisdiction.

(5) Rating of service disconnecting means — 2017 NEC. This is a department rule in addition to the requirements of 2017 NEC 230.79: For 2-family or multi-family dwellings, the service equipment shall have a rating of not less than 150 amperes, 3-wire or 4-wire.

History: CR 08-047: cr. Register February 2009 No. 638, eff. 3-1-09; CR 13-042: renum. (3) to (3) (b) and am. (3) (b) (title), renum. (4) to (3) (a) and am. (3) (title), (3) (a) (title), renum. (5) to (4) Register November 2013 No. 695, eff. 12-1-13; CR 16-093: am. (1) (a) (intro.), (c), (2), (3) (a), (b), (4) (intro.), cr. (5) Register June 2018 No. 750, eff. 8-1-18.

SPS 316.240 Overcurrent protection. The requirements in 2017 NEC 240.67 do not apply to this chapter.

History: CR 16-093: cr. Register June 2018 No. 750, eff. 8-1-18.

SPS 316.250 Grounding and bonding.

(1) Supplemental electrode required. The exception in 2011 and 2017 NEC 250.53 (A) (2) is not included as part of this chapter.

(2) Supplemental electrode. This is a department rule in addition to the requirements in 2011 and 2017 NEC 250.53 (A) (3): A single electrode consisting of a rod, pipe or plate shall be augmented by one additional electrode of any of the types in NEC 250.52 (A) (4) to (A) (8).

(3) Types of equipment grounding conductors. This is a department rule in addition to the requirements of 2017 NEC 250.118: A metallic raceway installed in direct contact with earth, in concrete slabs or floors poured on earth, or in exterior concrete walls below grade shall be augmented with a supplemental equipment grounding conductor identified in NEC 250.118 (1). This supplemental conductor shall be sized in accordance with NEC 250.122. An aluminum equipment grounding conductor used for this purpose shall be insulated.

History: CR 08-047: cr. Register February 2009 No. 638, eff. 3-1-09; CR 13-042: r. and recr. Register November 2013 No. 695, eff. 12-1-13; CR 16-093: am. (1), (2), cr. (3) Register June 2018 No. 750, eff. 8-1-18.

SPS 316.300 Wiring methods.

(1) Electrical requirements for private onsite wastewater treatment systems. These department rules apply to private onsite wastewater treatment systems and are in addition to the requirements of 2011 and 2017 NEC 300:

(a) Wiring methods. All effluent pump circuit wiring shall comply with the approved wiring methods as specified in NEC 300 and all of the following requirements:

1. Effluent pumps shall be supplied by a separate branch circuit supplying no other loads.

2. Alarm wiring may not be connected to the pump circuit.

3. All aboveground cables and flexible cords shall be enclosed to protect against physical damage.

4. The neutral conductor may not be common to both alarm and pump circuits.

5. Where the wiring enclosure for the alarm and pump circuit is located outside the pump chamber, any openings into the pump chamber for circuit wiring shall be sealed or plugged to prevent the passage of gas or vapor into the wiring enclosure.

Note: This prohibits use of a multi-wire branch circuit to supply both the alarm and pump.

Note: See NEC 430.102 for location of disconnects.

(b) Ground-fault circuit protection. A single receptacle located at the pump chamber that has an alarm or pump connected to it does not require ground-fault circuit-interrupter protection.

(2) Protection against physical damage.

(a) The requirements specified in 2011 NEC 300.4 (D) are not included as part of this chapter.

(b) This is a department exception in addition to the exceptions under 2017 NEC 300.4 (D): Exception No. 4: This distance does not need to be maintained within 8 inches of a device, junction box, splice, or termination point.

History: CR 08-047: cr. Register February 2009 No. 638, eff. 3-1-09: CR 13-042: cr. (1) (a) 5. Register November 2013 No. 695, eff. 12-1-13; CR 16-093: am. (1) (title), (intro.), renum. (2) to (2) (a) and am., cr. (2) (b) Register June 2018 No. 750, eff. 8-1-18.

SPS 316.310 Conductors for general wiring.

(1) This is a department rule in addition to the requirements in 2011 NEC 310.15 (B) (3) (a): The derating factors shown in NEC Table 310.15 (B) (3) (a) do not apply to branch circuits supplying an individual dwelling unit except under the following conditions: Exception No. 6: The derating factors shown in NEC Table 310.15 (B) (3) (a) do not apply to branch circuits supplying an individual dwelling unit except under the following conditions:

(a) Where more than two NM cables containing two or more current-carrying conductors are installed, without maintaining spacing between the cables, through the same opening in wood framing that is to be fire- or draft-stopped using thermal insulation, caulk or sealing foam, the allowable ampacity of each conductor shall be adjusted in accordance with Table 310.15 (B) (3) (a) and the provisions of 310.15 (A) (2) shall not apply.

(b) Where more than two NM cables containing two or more current-carrying conductors are installed in contact with thermal insulation without maintaining spacing between cables, the allowable ampacity of each conductor shall be adjusted in accordance with Table 310.15 (B) (3) (a).

(2) This is a department rule in addition to the requirements in 2017 NEC 310.15 (B) (3) (a): The derating factors shown in NEC Table 310.15 (B) (3) (a) do not apply to branch circuits supplying an individual dwelling unit.

History: CR 08-047: cr. Register February 2009 No. 638, eff. 3-1-09; CR 13-042: am. (title), (intro.) Register November 2013 No. 695, eff. 12-1-13; corrections in (intro.), (1), (2) under s. 13.92 (4) (b) 7. Register November 2013 No. 695; CR 16-093: renum. (intro.) to (1) (intro.), cr. (2) Register June 2018 No. 750, eff. 8-1-18.

SPS 316.312 Cabinets, cutout boxes and meter socket enclosures.

(1) Cables. Substitute the following wording for 2011 and 2017 NEC 312.5 (C) Exception (intro.): Exception: Cables with entirely nonmetallic sheaths may enter an enclosure through one or more nonflexible raceways of not less than 12 inches and not more than 10 feet in length, provided all of the following conditions are met:

(2) Omission. The requirements specified in 2011 NEC 312.5 (C) Exception paragraph (b) and 2017 NEC 312.5 (C) Exception number 2 are not included as part of this chapter.

(3) Fitting. Substitute the following wording for 2011 NEC 312.5 (C) Exception paragraph (c) and 2017 NEC 312.5 (C) Exception number 3: A fitting is provided on each end of the raceway to protect the cable from abrasion.

History: CR 08-047: cr. Register February 2009 No. 638, eff. 3-1-09; CR 16-093: am. Register June 2018 No. 750, eff. 8-1-18.

SPS 316.314 Outlet, device, pull and junction boxes; conduit bodies; fittings; and handhole enclosures.

(1) Conductors entering boxes, conduit bodies, or fittings. This is a department exception to the requirements of 2011 and 2017 NEC 314.17 (B) and (C): Exception: Nonmetallic sheathed cable is not required to be secured to the box or conduit body where it is installed in accordance with the wiring method specified in s. SPS 316.312.

(2) Outlet boxes. This is a department rule in addition to the requirements of 2011 NEC 314.27 (A): In a dwelling unit, a ceiling outlet box installed for use as a lighting fixture outlet in a habitable room or kitchen and located where a ceiling fan could be installed shall be a type listed for ceiling fan support.

History: CR 08-047: cr. Register February 2009 No. 638, eff. 3-1-09; correction in (1) made under s. 13.92 (4) (b) 7., Stats., Register December 2011 No. 672; CR 13-042: am. (title) Register November 2013 No. 695, eff. 12-1-13; CR 16-093: am. Register June 2018 No. 750, eff. 8-1-18.

SPS 316.334 Nonmetallic-sheathed cable: Types NM, NMC and NMS.

(1) Uses permitted. Substitute the following wording for 2011 and 2017 NEC 334.10 (3): Other structures permitted to be of Types III, IV, and V construction except as prohibited in NEC 334.12.

(2) Types NM, NMC, and NMS. The requirements specified in 2011 and 2017 NEC 334.12 (A) (2) are not included as part of this chapter.

History: CR 08-047: cr. Register February 2009 No. 638, eff. 3-1-09; CR 13-042: am. (2) (title) Register November 2013 No. 695, eff. 12-1-13; CR 16-093: am. Register June 2018 No. 750, eff. 8-1-18.

SPS 316.358 Uses permitted. This is a department rule in addition to the requirements of 2011 and 2017 NEC 358.12: Electrical metallic tubing may not be used in direct contact with earth, in concrete slabs or floors poured on earth, or in exterior concrete walls below grade.

History: CR 08-047: cr. Register February 2009 No. 638, eff. 3-1-09; CR 16-093: am. Register June 2018 No. 750, eff. 8-1-18.

SPS 316.400 Flexible cords and cables.

(1) This is a department exception in addition to the exception in 2011 NEC 400.8 (4): Exception No. 2: Flexible cords and cables permitted by NEC 400.7 (A) that are connected to sources other than busways may be attached to adequately supported equipment or building surfaces provided the type of cord or cable, the attachment to the building and equipment, and the support comply with the provisions of NEC 368.56 (B).

(2) This is a department exception in addition to the exception in 2017 NEC 400.12 (4): Exception No. 2: Flexible cords and cables permitted by NEC 400.10 (A) that are connected to sources other than busways may be attached to adequately supported equipment or building surfaces provided the type of cord or cable, the attachment to the building and equipment, and the support comply with the provisions of NEC 368.56 (B).

History: CR 08-047: cr. Register February 2009 No. 638, eff. 3-1-09; CR 13-042: am. (title) Register November 2013 No. 695, eff. 12-1-13; CR 16-093: renum. SPS 316.400 to (1) and am., cr. (2) Register June 2018 No. 750, eff. 8-1-18.

SPS 316.404 Switches controlling lighting loads. The requirements in 2017 NEC 404.2 (C) do not apply to dwelling units.

History: CR 16-093: cr. Register June 2018 No. 750, eff. 8-1-18.

SPS 316.406 Receptacles, cord connectors and attachment plugs (caps).

(1) The requirements in 2011 and 2017 NEC 406.4 (D) (4) are not included as part of this chapter.

(2) Substitute the following wording for 2017 NEC 406.9 (B) (1): Receptacles of 15 and 20 amperes, 125 and 250 volts installed in a wet location shall have an enclosure that is weatherproof whether or not the attachment plug cap is inserted.