All noncurrent-carrying metal parts of portable equipment and fixed equipment, including their associated fences, housings, enclosures, and supporting structures, shall be grounded. True Part I contains the general requirements (such as guarding, marking, and accessibility), and Part II contains requirements for specific types of transformers. 3. Both the equipment grounding conductor and the grounding electrode conductor shall be connected to the grounded circuit conductor on the supply side of the service disconnecting means or on the supply side of the system disconnecting means or overcurrent devices if the system is separately derived. A lamp holder itself is not a luminaire. A receptacle outlet shall be installed wherever flexible cords with attachment plugs are used. Overhead conductors for festoon lighting shall not be smaller than 12 AWG unless supported by messenger wires. A surface, flush, or freestanding raceway designed to hold conductors and receptacles (in the field or the factory). Meaning that if you had to get a ladder to reset this breaker, its considered accessible equipment as long as its not blocked. Receptacles connected to circuits having different voltages, frequencies, or types of current (ac or dc) on the same premises shall be of such design that the attachment plugs used on these circuits are not interchangeable. A motor disconnecting means must be located in sight from the motor location as required by 430. neutral disconnect link, 18. National Electrical Code Basics: Overcurrent Protection Part 2 All required tests shall be performed before first use; before equipment is returned to service following any repairs; before equipment is used after any incident which can be reasonably suspected to have caused damage (for example, when a cord set is run over); and at intervals not to exceed 3 months, except that cord sets and receptacles which are fixed and not exposed to damage shall be tested at intervals not exceeding 6 months; The employer shall not make available or permit the use by employees of any equipment which has not met the requirements of paragraph (b)(3)(ii)(C) of this section; and. Conduit (Junction) Box, Conduit Body B. FS, FD and larger boxes (cast or sheet metal) are not classified as conduit bodies. 240.6(A)], the next higher rating is permitted [Sec. Bonding means that everything is connected or conductivity of the electron through wires. Two exceptions to the make readily accessible rule are noted in Sec. Therefore, So a telephone occupies a circuit for, A: A circuit breaker is a kind of electrical switch which is used to protect an electrical circuit from, A: A power station is to provide electricity to a huge number of people. Grounding Triad is the term which is missing in NATIONAL, A: Eachtelephone makes 0.5 calls/hour at 5 minutes. Code Change Summary: Revised code language on the accessibility requirements for overcurrent devices. A circuit breaker with a slash rating, such as 120/240 V or 480Y/277 V, may only be installed in a circuit where the nominal voltage of any conductor to ground does not exceed the lower of the two values of the circuit breaker's voltage rating and the nominal voltage between any two conductors does not exceed the higher value of the circuit breaker's voltage rating. Festoon Lighting B. , which is used indirectly or directly on electrical installations. main bonding jumper What are Overcurrent Protection Devices? - Technical Articles - EE Power You are using an out of date browser. 240.24(A) Accessibility. - ElectricalLicenseRenewal.com Equipment found damaged or defective shall not be used until repaired; The following tests shall be performed on all cord sets and receptacles which are not a part of the permanent wiring of the building or structure, and cord- and plug-connected equipment required to be grounded: All equipment grounding conductors shall be tested for continuity and shall be electrically continuous; Each receptacle and attachment cap or plug shall be tested for correct attachment of the equipment grounding conductor.
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