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NEC 2023 (NFPA 70 National Electrical Code).

The following reference materials are allowed in the examination center:

Tests 11-20 have actual questions in each sample exam to prepare you for the NEC Knowledge portion of the exam!.

Tests 1-10 have actual questions in each sample exam to prepare you for the Calculations portion of the exam!.

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When you connect solar panels together in parallel, the total voltage output remains the same as it would for a single panel, but the output current becomes the sum of the output of each panel, 24 VDC.

What would be the output voltage of 20 solar modules rated at 24 VDC that are connected in parallel?.

Calculate the generator size required for a load of 100 A, 480 VAC, 3-phase, given an 80% PF?.

Step_3: Per Table 310.16 slide down 75 deg C column to 230 A, then to the left to size, 4/0 AWG.

However, 99.9% of all other derating questions, multiply the correction factor. In order to increase the ampacity requirement of the wire, divide by 0.75 correction factor to increase the ampacity from 155 to 206 A.

Step_2: Per Table 310.15(B)(1)(1) apply the temperature correction factor for 117 degrees F, calculate 155 A / 0.75 = 206.67 A.

What would be the required branch conductor size for the following continuous duty motor (FLA: 124 A, Ambient Temperature: 115 deg F, Terminals: 75 deg C)?.Our sample exams simulate your actual PSI state exam! School enrollment is complete with Home Study Computer Program, Tutoring, and Live Seminars with real questions, answers, code references, and calculations to prepare you for the actual PSI state licensing exam.Ĭustom Home Study Computer Program running on your personal PC Texas Master Electrician NEC 2023 exam preparation is our specialty since 1972.

Kansas residential appliance installer license prep class download the new for windows