The Sparky Hub™

Range calculation for November 23,2023 In the spirit of the holiday here is a nice and easy range calculation. Here are Three examples of how to answer this question. Work it out for yourself and then choose the best answer : A fifty-unit apartment building has the following ranges ten (17KW), ten (...

Q) A fifty-unit apartment building has the following ranges ten (17KW), ten (15KW), twenty (13KW), and ten (8KW). What is the total demand on the service for these ranges? (In KW) show your work.

Q) According to NFPA 72 Fire alarm system wiring and equipment, including all circuits controlled and powered by the fire alarm system, shall be installed in accordance with the requirements of this Code and of NFPA 

____ ______ ______. 

Q) Type MV conductors installed for airfield lighting series circuit that are rated to a maximum of ___________ volts and are powered by regulators.

Q) Extraction equipment and post-processing equipment of a cannabis oil facility shall be ________ and _________ to show the ___________ ( classified ) location for which it is permitted to be installed.

Q) The  circuit conductors ampacity of a capacitor is to be calculated at not less than ____________ of the rated current of a capacitor. 

Q) Apon disconnecting a capacitor from the circuit a means to reduce residual voltage shall be provided. The residual voltage shall be reduced to ________ voltage in _________ minutes.

Q) Apon disconnecting a capacitor from the circuit a means to reduce residual voltage shall be provided. The residual voltage shall be reduced to ________ voltage in _________ minutes.

Q) According to the NEC 70 for information on classified areas pertaining to LP-Gas systems other than residential or commercial, see NFPA ______-2017, Liquefied Petroleum Gas Code, and NFPA _____-2018, Utility LP-Gas Plant Code.

Q) In a Healthcare Facilitie the circuit supplying primaries of isolating transformers shall operate at not more than ________ between conductors and shall be provided with proper ___________ ________ .