Lecture 14 GFCI and General Conductors for Wiring

Shop Practice Practice with Electrical Code: GFCI and General Conductors for Wiring Jayson Bryan E. Mutuc, REE, RME BSEE-PUP MSEE, Major in Power Systems -MIT (candidate)

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2.10.1.8 Ground-F Ground-Fault ault Circuit-Interrupt Circuit-Interrupter er Protection Prote ction for Personnel Personnel (p.71) (p.7 1) (a) Dwelling units. All 125-volt and/or 250 volts, single phase, 15-ampere and 20-ampere receptacle installed in the locations specified in (1) through (8) shall have ground-fault circuit-interrupter protection for personnel.

(1) Bathrooms 2

2.10.1.8 Ground-F Ground-Fault ault Circuit-Interrupt Circuit-Interrupter er Protection Prote ction for Personnel Personnel (p.71) (p.7 1) (2) Garages, and also accessory buildings that have a floor located at or below grade level not intended as habitable rooms and limited to storage areas, work areas, and areas of similar use

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2.10.1.8 Ground-F Ground-Fault ault Circuit-Interrupt Circuit-Interrupter er Protection Prote ction for Personnel Personnel (p.71) (p.7 1) 2.10.1.8(a) Exception No. 1 to (2): Receptacles that are not readily accessible. Exception 2 to (2) A single receptacle or a duplex receptacle for two appliances located within dedicated space for each appliance that in normal use, is not easily moved from one place to another and that cord and plug connected 4

2.10.1.8 Ground-F Ground-Fault ault Circuit-Interrupt Circuit-Interrupter er Protection Prote ction for Personnel Personnel (p.71) (p.7 1) 2.10.1.8 (a) (3) Outdoors 2.10.1.8 (a) (4) Crawl spaces  – at or below grade level

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2.10.1.8 Ground-F Ground-Fault ault Circuit-Interrupt Circuit-Interrupter er Protection Prote ction for Personnel Personnel (p.71) (p.7 1) 2.10.1.8 (a) (5) Unfinished basements – for purposes of this section, unfinished basements are defined as portion of areas of the basement intended as habitable rooms and limited to storage storage areas, work areas, and the like

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2.10.1.8 Ground-F Ground-Fault ault Circuit-Interrupt Circuit-Interrupter er Protection Prote ction for Personnel Personnel (p.71) (p.7 1) 2.10.1.8 (a) (6) Kitchens  – where receptacles are installed to serve the countertop surfaces

2.10.1.8 (a) (8) Boathouses

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2.10.1.8 Ground-F Ground-Fault ault Circuit-Interrupt Circuit-Interrupter er Protection Prote ction for Personnel Personnel (p.71) (p.7 1) 2.10.1.8 (a) (7) Laundry, utility, and wet bar sinks  – where the receptacles installed within 1800 mm of the outside edge of the sink.

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2.10.1.8 Dwelling Unit Receptacle Outlets (p.84) (a) Gener General al Provi Provisio sions. ns. In every kitchen, family room, dining room, living room, den, sunroom, bedroom, recreation room, similar room or area of dwelling units, receptacle outlets shall be installed (1) So that no point measured horizontally horizontally along the floor line in any wall space is more than 1800 mm from a receptacle outlet. 9

2.10.1.8 Dwelling Unit Receptacle Outlets (p.84) 2.10.3.3 (a) (3) Floor receptacles. Receptacle outlets in floors shall not be counted as part of the required number of receptacle outlets unless located within 450 mm of the wall

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Article 3.10 Conductors for General Wiring 3.10.1.1 3.10.1.15 5 Ampacities Ampacities for Conductors Rated 0-2000 volts (a)(2) Selection of Ampacity (p.339). Where more than one calculated or tabulated ampacity ampacity could could apply apply for for a given circuit length, the lowest lowest value shall be used

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Article 3.10 Conductors for General Wiring 3.10.1.1 3.10.1.15 5 Ampacities Ampacities for Conductors Rated 0-2000 volts (b) Tables (p.346). The allowable allowable ampacities ampacities used on tables 3.10.1.16 are based on where the ambient temperature isn’t over 30 degree Celsius and no more three current carrying conductors are bundled together.

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Article 3.10 Conductors for General Wiring 3.10.1.1 3.10.1.15 5 Ampacities Ampacities for Conductors Rated 0-2000 volts (b)(2) Adjustment Factors (p.346). More Than Three Current-Carrying Conductors in a Raceway or Cable. Where the number of current carrying conductors in a raceway or cable exceeds three, the allowable allowable ampacity ampacity of each each conductor shall be reduced as shown in Table 3.10.1.15 (b)(2) (a) 13

Table 3.10.1.15 (b) (2) a Adjustment Factors for More than Three Current Carrying Conductors in a Racewa R aceway y or Cable Number Number of Current Current Carrying Carrying Conductors

Percent of Values Values as Adjusted Adjusted for Ambient Temperature if Necessary

4-6 7-9 10-20 21-30 31-40 41 and above

80 70 50 45 40 35

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