Determine the size of the service-entrance conductors required for twenty (20) 900 sq.ft units in a multi-family dwelling. The units have the following loads: Ø General lighting and receptacle loads. Ø Two small kitchen appliance loads and one laundry load per unit. Ø Special appliance loads. Each unit has: 10-kVA space heating unit; 12-kVA range; 5-kVA water heater; 1.2-kVA dishwasher; and 1-kVA disposal. Use both the standard and the optional methods to determine the service-entrance conductor size for the phases. Assume 240-volt service.

Determine the size of the service-entrance conductors required for twenty (20) 900 sq.ft units in a multi-family dwelling. The units have the following loads: Ø General lighting and receptacle loads. Ø Two small kitchen appliance loads and one laundry load per unit. Ø Special appliance loads. Each unit has: 10-kVA space heating unit; 12-kVA range; 5-kVA water heater; 1.2-kVA dishwasher; and 1-kVA disposal. Use both the standard and the optional methods to determine the service-entrance conductor size for the phases. Assume 240-volt service.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter10: Using Wire Tables And Determining Conductor Sizes

Section: Chapter Questions

Problem 4PA: Using the above example, determine the wire size needed for the 400-ampere service in accordance...

See similar textbooks

Similar questions

when calculating a dwelling lighting load on the "volt-ampere per ft2" basis, the receptacle load used for floor lamps, table lamps, and so fourth
Take a look at the wire supplying your house, another residential house, commercial and industrial buildings in your locality, count how many wires are connected to the building (from the electric meter to the weather head OR the service drop itself)? Are the wires different from each other? If so, why?
2- We want to install the 2000-meter wire in the college building, which one testing is the most important before installing the wire in the building and how?
An eighteen-unit multifamily dwelling contains the following appliances in each unit : a 1-kVA, 115-volt dishwasher, a 1/3 hp, 115-volt in-sink waste disposer and a 4500-watt, 230 volt water heater. Using the standard method, what is the service neutral load contribution, in volt-amperes , for these appliances ? ( Assume water heater watt rating equivalent to volt-ampere )
what is the minimum kW service demand load for twenty 6.5-kW electric ranges in a multifamily dwelling?
All of the following are NOT included when calculating the usable area of a dwelling to compute the required lighting load, EXCEPT for ____. Select one: a. open porches b. crawl spaces c. unfinished basements d. garages
6.a. The amount of short-circuit current that flows depends upon the amperes available at the source ofpower, the length of the circuit, and what other primary factor?A. The presence of a ground fault currentB. Proper installation of the branch circuitC. Presence of no previous damage to the electrical systemD. The size of the conductors and voltage at which they operate6.b. You're evaluating the components of a multioccupancy building that won't have an on-site employee. Tobe compliant with the NEC, each occupant will need to have access to their ownA. service-disconnecting means.B. service conductor.C. cable attachment point.D. emergency fire water-pump disconnect.
1. Question text In solar module, minimum value of shunt resistance could be 300 Ohm. Select one: True False
You have determined that a 4700-ohm, 1⁄2-watt resistor on an electronic cir- cuit board is defective. Assuming room permits, can the resistor be replaced with a 4700-ohm, 1-watt resistor without damage to the rest of the board, or will the higher wattage resistor generate excessive heat that could damage other components?
4.a. The installation of motor controllers and combination load equipment is not permitted if the short-circuitcurrent rating of the equipment isA. equal to the available short-circuit current at the site of installation.B. not found on either of the nameplates.C. more than the available short-circuit current at the site of installation.D. less than the available short-circuit current at the site of installation. 4.b. In a(n) ___ bend, the conductor does not enter or leave an enclosure through the wall opposite itsterminals.a. Vb. Sc. L
Using the above example, determine the wire size needed for the 400-ampere service in accordance with the National electrical Code. Assume that the conductors have type THWH insulation. (Note: As a general rule, for each 100 feet of conductor length the wire size is increased one standard size because of voltage drop.)
What is the unit load per square foot for dwelling units? See Table 220.12. __________