For all protective conductors, including main and supplementary bonding conductors, electricians must perform a continuity test using a low-reading ohmmeter. For main equipotential bonding, there is no single fixed value…
Requirements for audibility of a fire alarm system (FAS) are governed by Article 18.104.22.168. of the National Building Code of Canada (NBCC). So, why is this subject being discussed in a purely electrical publication?
PV ac system output currents for the larger systems are usually too high for connection on the load side of the service disconnect and must be connected on the supply side of the service disconnect. The NEC allows such connections, but the existing service must be examined carefully to determine where the connection can be made and what type of equipment must be used to make the connection.
Due to the many safety standards that apply to medical grade power strips, identifying the correct set of standards for a patient care application can be burdensome. This article will attempt to clarify the intent of each standard and to describe how it should be applied.
This article will explore the need for overcurrent protection for current-carrying tap conductors. CE Code Rule 14-100 requires overcurrent protection where a conductor receives a supply of current and at each point where the size of conductor is decreased.
So with so much volatility (and mistrust) permeating the construction world, it is little wonder bonding companies exist. No astute, responsible business person is going to gamble on a contractor (often unknown to them) disappearing in the middle of one of their building projects when there can be several million dollars in play and at risk.
My main concern for this particular installation is in reference to 690.64(B)(2). The new 400-amp subpanel is being supplied by 400-amp disconnect which is fed by a line side tap ahead of the service-main disconnect.
Ask leaders what members want from them and you’re likely to hear such words as friendly, positive, responsive, and problem-solver. Whatever else they may be, these are “the comfort words of membership.” It is how leaders picture themselves.