NCCER MODULE 26301-20

Branch circuit conductors must have an ampacity rating equal to, or greater than - ANS The noncontinous load plus 125% of the continous load The reciprocal of 125% is equivalent to - ANS 80% of the rating at the overcurrent protective device The square root of 3 - ANS 1.732 A voltage drop exist that exceeds the recommended 3% for branch circuits or 5% for the combination of feeder and branch circuits is caused - ANS When the distance of branch circuit conductors become excessive Nec table 310.16 - ANS List allowable ampacities for insulated conductors rated 0 - 2000v What is the maximum continuous load that may be connected to a 20A, 120v fuse? - ANS 16 amp (80%) Per nec section 220.14(I) - ANS Each receptacle is assigned a value of 180va. The capacity of a 15a 120 volt circuit is 1800va. Nec section 220.52(a) - ANS Requires that the feeder load be computed at 1500va for each required small appliance branch circuit. Nec sections 210.11(c)(2) and 210.52(f) require - ANS The installation of at least one receptacle to supply laundry equipment (1,500va for each laundry circuit) Per NEC section 422.10(a) - ANS 120 gallons or less shall have the branch circuit rated at no less than 125% of the name plate rating of the water heater because it's considered a continuous load Per NEC section 424.22(b) - ANS When space heating equipment utilizes electric resistance heating elements, protection for the resistance elements shall not exceed 60A Per Nec section 440.22(a) - ANS Overcurrent protection devices shall not exceed 175% of the compressor full load current or the branch circuit selection current. Per Nec section 220.14(h)(1) - ANS Each 5' of multi-outlet assembly is considered as one outlets of at least 180va capacity. In locations where many appliances are likely to be used at one time - ANS Each 1' 9; multi-outlets is considered as one outlets of at least 180va capacity Nec section 220.14(g) provides two option for calculating branch circuits - ANS Either using the computed receptacle load of 180va per receptacle or computing the load at 200va per linear foot of show window The actual sign load cannot exceed - ANS 80% of the branch circuit rating Per Nec section 220.14(e) - ANS Outlets for heavy-duty lamp holders are calculated at a minimum of 600va each. Nec table 220.56 list - ANS Demand factors for commercial kitchen equipment Multiplied by 125%, - ANS The resulting ampacity is used to select branch circuit conductors Nec table 430.250 - ANS Is used to determine full load current for three-phase ac motors Branch circuit conductor size is then determined using - ANS NEC table 310.16 Motor short circuit and ground fault protection is sized using - ANS NEC table 430.52 Per Nec section 430.52(c)(1) exception 1 - ANS The next higher standard fuse size is 125a Nec section 630.32(a) - ANS Provides that the rating for the over current protection device shall not exceed 300% of the primary current rating of the welder