overcurrent devices do not have to be readily accessible if

The NEC assumes you have already selected a transformer suitable for the load characteristics. Nonmetallic-sheathed cable not fastened to the box must be secured within ____ in. LOCATED ADJACENT TO THE EQUIPMENT WHERE ACCESS IS ACHIEVED BY THE USE OF PORTABLE MEANS. Readily Accessible, Jam Factor and More - Electrical Contractor Magazine A(n) ____ is an accessory, such as a locknut or bushing, whose function is primarily mechanical, rather than electrical, in nature. 240.6(A)], the next higher rating is permitted [Sec. A grounding electrode is a(n) ____ object that establishes a direct connection to earth. Electrical Engineering questions and answers, FLAC NEC Whi MULTIPLE CHOICE 1 Wiring components are considered accessible if(t) access can be gained without damaging the structure or finish of the building or if (2) they are ae Sledstry of the wiring here salatile in the ANS: PTS: 1 REF: Definitions 2. Exception: Overcurrent devices don not have to be readily accessible if located adjacent to the equipment where access is achieved by the use of portable means. continuous National Electrical Code Basics: Overcurrent Protection Part 5 , Enclosure Any case, housing, apparatus, fence, or wall surrounding an installation designed to prevent personnel from accidentally contacting energized parts to protect the equipment from physical damage serves as an enclosure. A voltmeter will not register a voltage when connected to the same ungrounded (hot) phase. 1910.304(f)(1)(v) Fuses and circuit breakers shall be so located or shielded that employees will . FLAC NEC Whi MULTIPLE CHOICE 1 Wiring components are - Chegg LOCATED ADJACENT TO THE EQUIPMENT WHERE ACCESS IS ACHIEVED BY THE USE OF PORTABLE MEANS C.THE TOTAL LOAD OF THE ADJACENT CIRCUIT DOES NOT EXCEED LOCAL STANDARDS D.THE DISCONNECTING MEANS IS READILY ACCESSIBLE. Bonding Connected to establish electrical continuity and conductivity. Next we will jump to 240.24 Location in or on Premises. Dry locations are those not normally subject to moisture except on a temporary basis such as a building under Construction NEC. #10. steve66 said: According to the definition of a branch circuit, it starts at the final overcurrent protection device. Overcurrent Protection Device Overcurrent Protection (Breaker) A branch-circuit overcurrent protection is a device capable of protecting feeders, branch circuits, service equipment between its rated current and its interrupting rating. Accessible (Readily Accessible) Readily accessible means capable of being reached quickly without have to climb or remove obstacles. In most cases, access can be gained through the use of a ladder or scaffolding ect. (B) Suspended Ceilings. Every electric circuit must have overcurrent protection, whether a high-voltage transmission line carries many amperes or a low-voltage lighting circuit passes a few amperes.Some devices must protect conductors and equipment from overloads and short . Each service disconnecting means shall be suitable for the prevailing conditions. Dry-type transformers having a secondary voltage of 1,000V or less are not required to be readily accessible. Broken connectors in a cable linkB. Neutral Conductor or Point D. The neutral point is the midpoint on a single-phase portion of a 3 wire direct current system. The GFCI shall be readily accessible, listed, and located in one or more of the following locations: (1) Within the branch circuit overcurrent device (2) A device or outlet within the supply circuit (3) An integral part of the attachment plug (4) Within the supply cord not more than 300 mm (12 in.) The definition of that word begins with, "A point on the premises wiring system. four-wire, three-phaseB. A fitting is an accessory, such as a locknut or bushing, whose function is primarily mechanical, rather than electrical in nature. Electric equipment is considered to be effectively grounded if it is secured to, and in electrical contact with, a metal rack or structure that is provided for its support and the metal rack or structure is grounded by the method specified for the noncurrent-carrying metal parts of fixed equipment in paragraph (g)(8)(i) of this section. According to the definition of a branch circuit, it starts at the final overcurrent protection device. - Maximum Cord- and Plug-Connected Load to Receptacle, Table S-5. Branch Circuit The circuit conductors found between a circuits final overcurrent protective device (breaker) and the circuits outlet is called a branch circuit. Service conductors installed as open conductors or multiconductor cable without an overall outer jacket shall have a clearance of not less than 914 mm (3.0 ft) from windows that are designed to be opened, doors, porches, balconies, ladders, stairs, fire escapes, and similar locations. 2023 Endeavor Business Media, LLC. To catch up on Lorenzo Mari's series on Overcurrent Protection, please visit: National Electrical Code Basics: Overcurrent Protection Part 1 . 250.12]. 450.13(A) and (B): (A) Open Installations. The system complies with all other provisions of paragraph (g) of this section. This type of protection is not required to be readily accessible as are branch circuit devices. Dont install a transformer below a water heater that is on a mezzanine or similar elevation. The service disconnecting means shall be installed at a readily accessible location either outside of a building or structure or inside nearest the point of entrance of the service conductors. Thus, you do not create a new branch circuit. Cables running horizontally (or diagonally) are considered supported and secured when passing through a(n) ____. Related Code Sections. Receptacles other than 125 volt, single-phase, 15-, 20-, and 30-ampere receptacles that are not part of the permanent wiring of the building or structure and that are in use by personnel shall have ground-fault circuit-interrupter protection for personnel. Illustrated Guide to the National Electrical, Lesson 301 - Practical Guide to OSHA and NFPA, Bruce H. Edwards, Larson, Robert P. Hostetler. Problems due to aging during operationC. Find the inverse of the function with the domain given. A transformer must have a disconnect within sight of the transformer unless the disconnect location is field marked on the transformer, and the disconnect is capable of being locked in the open position per Sec. The grounding electrode to which the portable equipment system neutral impedance is connected shall be isolated from and separated in the ground by at least 6.1 m (20.0 ft) from any other system or equipment grounding electrode, and there shall be no direct connection between the grounding electrodes, such as buried pipe, fence, and so forth. Example: Conductors connected to switches and receptacles are accessible by a removable plate or device. A surface, flush, or freestanding raceway designed to hold conductors and receptacles (in the field or the factory). Cable tester is a device which is used to test a cable. You will have to check the listing of the fuse and fuse holder. Metal enclosures for service equipment shall be grounded. An appliance branch circuit supplies energy to one or more outlets for the purpose of ____. The following additional requirements apply to feeders only: Conductors tapped to a feeder may be protected by the feeder overcurrent device where that overcurrent device also protects the tap conductor. connected to ground or to a conductive body that extends the ground connection. Use and identification of grounded and grounding conductors -, A nongrounding-type receptacle may be replaced with a ground-fault circuit-interrupter-type of receptacle that is marked "No Equipment Ground;" an equipment grounding conductor may not be connected from the ground-fault circuit-interrupter-type receptacle to any outlet supplied from the ground-fault circuit-interrupter receptacle; or. 1910.306 - Occupational Safety and Health Administration Branch Circuit Appliance An appliance branch circuit supplies energy to one or more outlets for the purpose of connecting appliances. PDF Equipment Protection - Eaton Cable installed under a building must be ____ unless the wiring method is Type MC or Type MI cable that is identified for direct burial. . three-wire, single-phaseC. Installations in any of the following categories are wet locations, underground, within concrete slabs, in masonry areas subject to saturation or liquids and in locations unprotected from weather. This program shall comply with the following requirements: A written description of the program, including the specific procedures adopted by the employer, shall be available at the jobsite for inspection and copying by the Assistant Secretary of Labor and any affected employee; The employer shall designate one or more competent persons to implement the program; Each cord set, attachment cap, plug, and receptacle of cord sets, and any equipment connected by cord and plug, except cord sets and receptacles which are fixed and not exposed to damage, shall be visually inspected before each day's use for external defects, such as deformed or missing pins or insulation damage, and for indications of possible internal damage. The overcurrent devices shall be readily accessible to the tenants they serve -- at anytime the tenant will be able to access the OCD quickley, without hinderance of locked doors in which they do not have keys -- If the tenant can freely walk to the OCD for access then you are good -- I am also assuming the tenant has permanate provisions for cooking in their unit. Damp locations are those subject to moderate degrees of moisture. 240.4(B). Special Permission AHJ Special permission is the written consent of the authority having Jurisdiction or the AHJ who enforce the NEC and grant variances in the code (building department). (This category includes conditions covered under the 3.05-m (10.0-ft) category where the voltage exceeds 150 V.). Note 2 to paragraph (b)(3)(ii)(A) of this section: Cord sets and devices incorporating the required ground-fault circuit-interrupter that are connected to the receptacle closest to the source of power are acceptable forms of protection. AC systems of 50 volts to 1000 volts are not required to be grounded under any of the following conditions: If the system is used exclusively to supply industrial electric furnaces for melting, refining, tempering, and the like; If the system is separately derived and is used exclusively for rectifiers supplying only adjustable speed industrial drives; If the system is separately derived and is supplied by a transformer that has a primary voltage rating less than 1000 volts, provided all of the following conditions are met: The system is used exclusively for control circuits; The conditions of maintenance and supervision ensure that only qualified persons will service the installation; Continuity of control power is required; and.

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