A. 
The rules in this section are designed to assist in maintaining a high standard of electric service for all classes of customers with maximum economy based on electric service rules of the Wisconsin Public Service Commission governing the variation of voltage at customer's service entrances.
B. 
Before installing any utilization equipment, it shall be the customer's responsibility to notify the Utility of the planned addition. The Utility will advise customers concerning a specific installation on request but not test or investigate any customer's equipment except when necessary to determine the cause of substandard voltage conditions. The Utility shall, at all reasonable times, have the right to enter a customer's premises to examine customer's equipment. The Utility may refuse to connect service or will suspend service when such equipment does not conform to these rules and has not been corrected after reasonable notice.
C. 
All wiring and other electrical equipment on the premises furnished by the customer shall be installed and maintained by the customer at all times in conformity with the requirements of the Wisconsin State Electrical Code and with the rules and regulations of the Utility. Electrical apparatus to be used in connection with and operated by energy furnished by the Utility shall be of such design and construction and installed and operated in such manner so as not to interfere unreasonably with the Utility's service to other consumers. In the event that such apparatus does not comply with the above requirements, the Utility may discontinue service until the conditions causing interference with the Utility's service to other customers have been remedied by the customer. The Utility may require the installation of a separate power service to serve equipment which does not conform to the rules which govern lighting service or to serve other devices which are likely to interfere with standard voltage regulation.
D. 
Where a customer connects single-phase equipment to a three-phase service, the single-phase equipment shall be connected to prevent unbalance of the loads on the three-phase service in excess of 10%. A power factor of 90% (or as otherwise specified in the company's tariffs) shall be maintained by the customer. When these requirements cannot be met, the customer shall apply for a separate single-phase service.
E. 
It shall be the customer's responsibility to install any protective devices such as time-delay under-voltage releases, phase-reversal relays, devices to protect against unbalanced phase operation of three-phase equipment and any other device necessary to prevent damage to utilization equipment which might result from imperfections in the supply of power.
A. 
In order to prevent impairment of the service to other customers, it is necessary to establish limits of allowable starting currents for motors. Before selecting motor equipment, the customer should consult the Utility to determine the specific voltages available at any location.
B. 
When a motor is used to drive equipment that requires varying torque during each cycle of operation, such as a compressor or reciprocating pump, the combined installation should have enough momentum in its moving parts so that its operation will not interfere unduly with service to other customers.
C. 
Types of motor service available on general service lighting rates, single-phase only, are as follows:
(1) 
Single-phase fractional horsepower motors automatically controlled and frequently started, whose locked rotor currents do not exceed 23 amperes, may be connected to one-hundred-twenty-volt circuits.
(2) 
Single-phase motors, one horsepower or less, manually controlled or infrequently started, whose locked rotor currents do not exceed 50 amperes, may be connected to one-hundred-twenty-volt circuits. No single-phase motor larger than one horsepower shall be operated on a one-hundred-twenty-volt circuit.
(3) 
Infrequently started single-phase motors of 10 horsepower or less may be connected to two-hundred-forty-volt commercial lighting and residential circuits if their locked rotor currents do not exceed the values shown in the next section describing motor service available on power rates.
(4) 
In urban areas, infrequently started three-phase motors of 10 horsepower or less, connected through single-phase to three-phase converters, may be used on residential and commercial lighting circuits.
(5) 
Single-phase motors above 10 horsepower are not permitted in rural areas.
D. 
Types of motor service available on power rates and combined light and power rates, single-phase and three-phase, are as follows:
(1) 
Motors with long periods of continuous operation under maximum load conditions and having not more than four starts per hour may be connected if their locked rotor currents do not exceed those listed in the following table. Consult the Utility where these conditions cannot be met or where equipment ratings and/or starting characteristics exceed the values in the table below:
Motor Starting Table
Motor Rated
Total Locked Rotor Current Not to Exceed
120 volts, single-phase
50 amperes
240 volts, single-phase
2 horsepower or less
60 amperes
2 to 6.5 horsepower
60 amperes plus 20 amperes per horsepower in excess of 2 horsepower
6.5 to 15 horsepower
150 amperes plus 10 amperes per horsepower in excess of 6.5 horsepower
240 volts, three-phase
2 horsepower or less
50 amperes
2 to 19.9 horsepower
50 amperes plus 14 amperes per horsepower in excess of 2 horsepower
20 to 40 horsepower
300 amperes plus 4 amperes per horsepower in excess of 20 horsepower
50 horsepower and over
8 amperes per horsepower
(2) 
Motors over ten-horsepower rating are to be three-phase.
(3) 
New installation of motors of 50 horsepower or larger should be approved by the Utility as to motor type, starting and protective equipment, and as to availability of an adequate power supply at the proposed location.
(4) 
Motors subject to frequent starts, such as elevator and hoist motors, when connected to the secondary distribution system, should have their starting current limited to 100 amperes.
(5) 
For motors of higher voltage rating than shown in the motor starting table, the allowable currents are inversely proportional to the voltages.
A. 
X-ray equipment operated on lighting or combined lighting and power services shall have input currents not exceeding 24 amperes without specific approval of the Utility.
B. 
All other equipment not specifically provided for in this section will be subject to approval of the Utility on the basis of starting currents specified herein for motors with the same frequency of starting. Customers are advised to consult the Utility before connecting any such apparatus.
A. 
No generator may be electrically connected to the Utility's line or equipment without the written consent of the Utility and with adequate physical arrangements to prevent hazard to life and damage to Utility property.
B. 
After advance written notice and advance approval by the Utility, a customer may install his own standby emergency generating equipment and connect it to his wiring systems, provided the connection is through a double-throw switch or other means which will prevent accidental electrical connection of the generator to the Utility's facilities at any time. All cost of installation and equipment shall be borne by the customer. The customer shall not operate such equipment until inspection by the Utility has been completed. In the event that any customer wishes to engage in parallel operation with the facilities of the Utility, service will not be rendered to such customer until a written contract has been entered upon between the customer and the Utility and the conditions of delivery of electric energy are fully outlined therein.