Some installers of electrical equipment have a bit of difficulty in differentiating ground fault circuit interrupters and ground-fault protection. And what is the difference between a typical overcurrent protective device…
Wiring methods for Class I, Division 2 locations are addressed in Section 501.10(B) of the NEC. Here, in addition to those wiring methods that are permitted for Class I, Division 1 installations in Section 501.10(A), the NEC covers other wiring methods that are permitted for Class I, Division 2.
The benefit of group motor installations is that only one branch-circuit overcurrent protective device (fuse or listed inverse-time circuit breaker) is required to provide short-circuit protection for all motor controllers or overload protection devices in the group.
Zone-selective interlocking (ZSI) has been in practical use since the mid-1980s. This technology was created to speed up the tripping time for some faults within a zone of protection without sacrificing selective coordination and interjecting nuisance tripping into the system.
A supply-side interconnection is any connection to the service conductors on the supply-side of the service disconnecting means. The 2017 National Electrical Code (NEC) contains nine categories of equipment. A list of allowed supply-side interconnections is provided in NEC 230.82.
This article relates to National Electrical Code (NEC) 250.70, which states: “Methods of Grounding and Bonding Conductor Connection to Electrodes. The grounding or bonding conductor shall be connected to the…
Unfortunately, some Code changes are a direct result of a fatality. Canadian Electrical Code Rule 30-1024 1 (previously Rule 30-1030) is an example of a tragedy resulting in a change.
Privacy & Cookies Policy
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.