ECCODES A Leader in Education Electricians. ECCODES A Leader in Education Today's presentation does not include voltage drops, power factor, increase.

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Presentation transcript:

ECCODES A Leader in Education Electricians

ECCODES A Leader in Education Today's presentation does not include voltage drops, power factor, increase use of electricity, and is intended ONLY to be used as a study-aide and not to design or to be used to validate an installation.

ECCODES A Leader in Education Electricians Study-aide Always consult with the local AHJ in your area for an interpretation.

ECCODES A Leader in Education Study-aide Questions

ECCODES A Leader in Education Question: a. 22,500 va. b va. c. 6,250 va. d. 16,250 va. A J. C. Penny (store) is to have ampere, 125-volt multiple general use receptacles installed, in various locations throughout its store. What is the DEMAND receptacle load for this installation?

ECCODES A Leader in Education If you have selected the wrong answer. Don’t give-up try again Back to the question

ECCODES A Leader in Education You have answered the question correctly. You have answered the question correctly. Next Article 220 Receptacles installed, in other than dwellings, must be calculated at 180.va per receptacle on the same yoke as provided in (I) and permitted to apply the demand in [See (I) and exception for four or more receptacles used for a specific equipment.] EXAMPLE: 180va. X 125 = 22,500va. The first

ECCODES A Leader in Education Question: a. 8 b. 9.6 c. 6.4 d. 10 The feeder demand load for an 8 kW load, increased by 20% is kVA.

ECCODES A Leader in Education You have answered the question correctly. You have answered the question correctly. Next Article 220 EXAMPLE: 8,000 watt range is the demand load in column C of table Therefore, 8,000 watts x.2 [increased 20%] = 1600watts added to 8,000 watts.

ECCODES A Leader in Education Question: a. # 8 b # 6. c. # 4 d. # 2 What size THHN conductor is required to terminate to a 70-ampere circuit breaker or fuse?

ECCODES A Leader in Education You have answered the question correctly. You have answered the question correctly. Next Article 110/310 In the question there is no mention of the temperature ratings of the equipment, such as at the breaker, therefore, looking at (C) we must use the 60 ͦ column in table (B)(16). Also there is no mention if the load is a continuous load, therefore, it would be considered as non- continuous and 100%.

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