#Minimum cubic inchs of plaster rings how to#
#Minimum cubic inchs of plaster rings full#
#Minimum cubic inchs of plaster rings code#

The wiring method used is 12 AWG MC cable (with external connectors). 2 3/4 Refer to Figure 116.201, shown above. The minimum cubic inch capacity of the plaster ring that will be installed on the box is _ inch. A 4 × 11/4 inch square metal box with a 2-gang plaster ring is to be installed as the box assembly. A separate equipment grounding conductor is not required for this installation. The wiring method used is 12 AWG wire installed in EMT. 6.75 Refer to the legend and partial wiring plan in Figure 116.201.

#Minimum cubic inchs of plaster rings code#

Select N/A (not applicable) if there is not a Code reference for this. 200.7(C)(1) The Code section that specifies that white conductors in a cable assembly must be re-identified where used to 'feed' a switch is _. 'Weatherproof' and 'GFCI protected' only A 125-volt, 15- or 20-ampere receptacle installed outside a house is required to be _. The Code reference(s) for this requirement is _. Theplans require that the outside receptacle for this dwelling be GFCI protected. The single-pole switch to the left of the sliding doors controls _. the exterior light fixture Refer to Figure 116.109. 70 The NEC® at 314.27(C) states that listed outlet boxes or outlet box systems that are listed and marked for the purpose shall be permitted to support ceiling-suspended fans (paddle type) that weigh _ pounds or less. 210.52(A)(2)(2) When determining the spacing between wall receptacles, the Code section that specifies whether or not the slidingpanels in glass doors in a dwelling are counted in the maximum spacing is _. not specified in the NEC® Along a wall line (not separated by doors), the maximum spacing between receptacles in the dining room in a cafeteria is _. arc-fault circuit interrupter (AFCI) The NEC® at Section 210.12 requires that _ protection be provided for all electrical outlets in residential bedrooms. Requirements pertaining to the installation and use of all boxes and conduit bodies used as outlet, device, junction or pull boxes are in Article 314 of the National Electrical Code.12 Along a wall line (not separated by doors), the maximum spacing between receptacles in the dining room in a house is _ feet. Besides boxes and conduit bodies, this article covers manholes and other electric enclosures intended for personnel entry. Article 314 also includes installation requirements for fittings used to join raceways and to connect raceways and cables to boxes and conduit bodies. After providing an introduction of Article 314, last month’s In Focus covered 314.15 and started discussing provisions in 314.16.

#Minimum cubic inchs of plaster rings full#

Just because a cover can be installed on a junction box that is packed full of conductors, does not mean it is Code compliant.

#Minimum cubic inchs of plaster rings how to#

Requirements in 314.16(A) and (B) specify how to calculate the maximum number of conductors in outlet, device, pull or junction boxes. While box volume calculations are in 314.16(A), box fill calculations are in 314.16(B). The volume of the box, as calculated in 314.16(A), must not be less than the fill calculation as calculated in 314.16(B). Table 314.16(A) provides minimum volume and maximum number of conductors for certain size metal boxes. Table 314.16(A)’s middle section provides the cubic-inch and cubic-millimeter volume for each box trade size. Volume is not calculated by using the outside dimensions of a box. The volume is the actual amount of area or space inside the box. For example, what is the cubic-inch volume of a 4-inch square metal box with a depth of 1 1/2 inches? By using the outside dimensions, the size of the box is 24 cubic inches (4 x 4 x 1.5 = 24).

However, this is not the cubic-inch volume of the box. As listed in Table 314.16(A), a 4-inch square metal box with a depth of 1 1/2 inches has a volume of 21 cubic inches (See Figure 1). When the same size conductors will be installed in a metal box that is listed in Table 314.16(A), no calculation is needed. First, find the box and then follow the row across to find the maximum number of conductors permitted.