NEC - Articles
It is this table that is used to size Equipment Grounding Conductors.
What is Table 250.122?
This is the total resistance of a 1, 2, 3, 4, and 5 ohm resistor in parallel.
What is 0.44 ohms?
This conductor connects the grounded circuit conductor and the equipment grounding conductor.
What is the Main Bonding Jumper?
Conductors that supply a single motor used in a continuous duty application shall have an ampacity of not less than this percentage of the motor full-load current rating.
What is 125%?
This is the minimum weight rating for a fall protection anchor point.
What is 5000lbs?
This table is used to determine the full load current of a single-phase alternating-current motor.
What is Table 430.248?
This is the maximum number of luminaires that can be installed on a 20 ampere 208 volt branch circuit in a storage building where the luminaires are 250 watts, 270 VA, and the overcurrent device is listed for 100% continuous use.
What is 15 luminaires?
This is the minimum sized GEC to be ran to a ground rod.
What is #6 Copper?
This is the full load amps for a 100 horsepower 230V synchronous motor.
What is 202 amps?
This function on a multimeter can be used to determine if a measured voltage is real, or phantom.
What is LOW-Z or low impedance?
This article states that the ampacity of a capacitor circuit conductor shall not be less than 135% of the rated current of the capacitor.
What is article 460.8(A)?
This is the current that would be read on a multimeter measuring a 10555 Watt single-phase load at 209.3 Volts with a power factor of 0.89.
What is 56.66 Amps?
This device shall be provided external to enclosures at the service. It is used for grounding communication equipment.
What is an Intersystem Bonding Termination (IBT) device?
This is the RPM of a 7 1/2 HP, 480 V, three-phase, 50 HZ wound rotor motor with a nameplate FLA of 13A, and 8 poles.
What is a Cyber Attack?
This article states that a site-isolating device on a farm shall be pole mounted.
What is article 547.9(A)(2)?
This is the calculated feeder demand for 11 household electric ranges each rated at 10 kW
What is 26 kW?
This is the size supply-side bonding jumper required for a 600 amp 3 phase service consisting of six sets of #3's in parallel where each set is in its own pipe.
What is #8 AWG?
This is the size inverse time breaker required for a 3 horsepower 240v single phase shop air compressor.
What is 45 amps?
This is the height of a standard wind tower currently in the area. It is also three times the height of our training tower.
What is 270 feet?
This table states that the ampacity of a 16/3 SJOOW flexible cable is 13 amps when there are only two current carrying conductors (hot, neutral, ground)
What is Table 400.5(A)(1)?
This is the maximum calculated short-circuit fault current for a transformer with the following secondary nameplate: 35 kVA, 120/240 Volt, Single-Phase, 1.5% Z.
What is 9,722 Amperes?
After increasing a 50A branch circuit from 8 AWG conductors to 2 AWG conductors in order to mitigate voltage drop, the GEC increases from a #10 XHHW to this new size XHHW.
What is 4 AWG?
This is the size of copper GEC required to be ran to a 3 horsepower single phase 240 volt air compressor protected with an inverse time breaker.
What is a #10?
This type of generator utilizes a regular every-day off-the-shelf electric motor to generate power.
What is an Induction Generator?