The following language shall be inserted as a new Article 570:
"570 Requirements for Existing Dwelling Units in Buildings Not Exceeding Four Stories in Height
570.1 Scope. This article covers the electrical requirements, installation requirements, and connection requirements for an existing dwelling unit in a building not exceeding four stories in height, including an existing dwelling unit in a building of mixed occupancy not exceeding four stories in height, and the common areas serving those dwelling units, when the alterations, remodeling, or repairs do not encompass 60% or more of the building structure, dwelling unit, or electrical system.
570.2 Not Covered. Dwelling occupancies not covered in 570.1 shall comply with Article 560 and other applicable articles of this Code.
570.3 General. All electrical installations, alterations and repairs shall be performed by an electrical contractor.
570.4 Permits. The electrical contractor shall obtain an electrical permit for all electrical work to be performed. Electrical permits shall be obtained before any work is started.
570.5 Plans. All plans and load calculations required by 215.5 shall be submitted before any electrical work is started. All plans and load calculations are subject to field inspection.
570.6 Electrical Heating. All electrical heat installations and conversions shall conform to the provisions of Articles 422 and 424.
570.7 Emergency Lighting. All buildings which contain five or more dwelling units shall conform to the provisions of Article 700, as they apply to emergency lighting requirements.
570.8 Ground Fault Circuit-Interrupter Protection for Personnel. All 125-volt, single phase, 15- and 20-ampere receptacle outlets installed in bathrooms, garages, counter top spaces, unfinished basements and outdoor locations shall have ground fault circuit interrupter protection for personnel.
Informational Note: See 210.12 and exceptions for arc-fault circuit-interrupter (AFCI) protection requirements.
570.9 Minimum Standards. When alterations, remodeling, or repairs encompass less than 60% of a building structure, dwelling unit, or electrical system, the wiring serving such building or structure shall conform to (a), (b), and (c) of this section.
(a) Any part of the building structure, dwelling unit, or electrical system upon which alterations, remodeling, or repairs are performed shall comply with the provisions of 570.10(A) through (I) and the other applicable sections of this Code.
(b) For existing dwelling occupancies not exceeding four stories in height or in the residential portion of an existing building of mixed occupancy not exceeding four stories in height, the portion of the building being altered, remodeled, or repaired shall comply with the provisions of 570.10(A) through (I).
In addition, there shall be a minimum of 60 amperes supply for each altered, remodeled, or repaired dwelling unit that is not a hotel or motel guest room.
Informational Note: Mixed occupancies include but are not limited to, mixed commercial and dwelling types.
(c) Simple repairs that do not involve structural alterations, such as replacing non-functioning switches, shall comply with the provisions of 570.10 (A), (B), (G), (H) and (I).
570.10. Specific Requirements.
(A) Ampacity Requirements. All existing electrical service, feeders, branch circuits, or system and equipment grounding, required to meet the standards set forth in this section shall be in an approved, acceptable condition and shall be of adequate ampacity for the load being served. For the purposes of this requirement, any existing electrical service being altered, remodeled or repaired shall be a minimum of 60 amperes supply for each dwelling unit that is not a hotel or motel guest room.
(B) Overcurrent Protection. All over-current protection required to meet the standards set forth in this section shall be of the proper size. When plug fuses are utilized, they shall be "Type S."
(C) Branch Lighting Circuits. Each dwelling unit shall be provided with a minimum of one 15-ampere general lighting branch circuit for each 46.5 m2 (500 ft2) of living space. This branch circuit may supply the general use receptacle outlets.
(D) Small Appliance Branch Circuits. Each dwelling unit shall be provided with a minimum of one 20-ampere small appliance branch circuit to supply a minimum of two receptacle outlets serving countertops in each kitchen. This circuit shall be permitted to also serve a laundry receptacle.
(E) Receptacle Outlet Requirements. An adequate number of receptacle outlets shall be provided in every habitable room of each dwelling unit to eliminate the need for the use of cord extension wiring. The minimum number of receptacle outlets required for various sized rooms is shown in Table 570.10.
Receptacle outlets serving kitchen countertops shall be ground-fault circuit-interrupter protected. At least one ground-fault circuit-interrupter protected wall mounted receptacle outlet shall be installed in each bathroom adjacent to the basin.
(F) Lighting Outlets Required. At least one wall switch-controlled lighting outlet shall be installed in each habitable room. Closets shall be adequately illuminated and shall contain light fixtures with a completely enclosed lamp, unless adequate illumination is supplied from adjacent fixtures outside the closet.
(G) Covers. All electrical boxes and outlets shall be provided with approved covers or plates.
(H) Smoke Alarms. Smoke alarms as required by the Chicago Building Code shall be installed. All smoke alarms shall be approved.
(I) Carbon Monoxide Detectors. Carbon monoxide detectors as required by the Chicago Building Code shall be installed. All carbon monoxide detectors shall be approved.
Table 570.10 Minimum Receptacle Outlets Required
Room Size | Minimum Receptacle Outlets Required* |
1 to 64 ft2 (example 8 ft x 8 ft) | 2, on opposite walls |
65 to 100 ft2 (example 10 ft x 10 ft) | 3, on adjacent walls |
greater than 100 ft2 (example 12 ft x 12 ft) | 1 on each wall |
* Where a straight wall exceeds 20 ft, a minimum of one receptacle outlet shall be provided for every 18 ft of that wall. | |
570.11 Wiring Methods. In addition to those wiring methods recognized in Chapter 3, the following wiring method is recognized as suitable:
Trade size 3/8 flexible metal conduit or listed MC cable may be used for extensions to general lighting or appliance branch circuits not exceeding 20 amperes. Trade size 3/8 flexible metal conduit and MC cable extensions are permitted between an existing outlet and two new outlets located in new or existing walls or partitions. Installation of trade size 3/8 flexible metal conduit and MC cable extensions shall be permitted in lengths up to 7.62 m (25 ft). The number of conductors permitted in a trade size 3/8 flexible metal conduit extension shall conform to Table 570.11. All flexible metal conduit shall contain a properly sized equipment grounding conductor sized to Table 250.122.
Table 570.11 Maximum Number of Insulated Conductors in Trade Size 3/8 Flexible Metal Conduit*
Size (AWG) | Fitting Location | Type
| |||
RFH-2, SF-2 | TF, XHHW, TW | TFN, THHN, THWN | FEP, FEBP, PF, PGF
| ||
Size (AWG) | Fitting Location | Type
| |||
RFH-2, SF-2 | TF, XHHW, TW | TFN, THHN, THWN | FEP, FEBP, PF, PGF
| ||
18 | Inside Conduit | 2 | 3 | 5 | 5 |
Outside Conduit | 3 | 5 | 8 | 8 | |
16 | Inside Conduit | 1 | 3 | 4 | 4 |
Outside Conduit | 2 | 4 | 6 | 6 | |
14 | Inside Conduit | 1 | 2 | 3 | 3 |
Outside Conduit | 2 | 3 | 4 | 4 | |
12 | Inside Conduit | - | 1 | 2 | 2 |
Outside Conduit | - | 2 | 3 | 3 | |
10 | Inside Conduit | - | 1 | 1 | 1 |
Outside Conduit | - | 1 | 1 | 2 | |
*In addition, one insulated, covered, or bare equipment grounding conductor of the same size shall be permitted." | |||||