Section 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.Wis. Admin. Code Department of Safety and Professional Services SPS 316.300
Amended by, 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. 8/1/2018.