How does the NEC define a branch circuit?
NEC Article 100 “Definitions” defines branch circuit (BC) as “The circuit conductor between the final overcurrent protection device (OCPD) protecting said circuit and the outlet(s).” The same article also defines outlet as “A point on the wiring system at which current is taken to supply utilization equipment.”
Can a 15 amp receptacle be connected to a 20 amp branch circuit where the branch circuit supplies two or more receptacles or outlets?
A 15-ampere branch circuit can supply 15-ampere receptacles, but not 20-ampere receptacles. A 20-ampere circuit can supply either 15- or 20-ampere receptacles. Receptacles fed from a 30-ampere branch circuit, must be rated 30 amperes.
What does Yoke mean in electrical terms?
In general the yoke, sometimes used interchangeably with the term strap, is a mounting means for a wiring device. The yoke of a receptacle is the frame, the metal portion of the receptacle that is used to mount a device to the outlet box.
What article in the NEC covers switches?
Article 404
Article 404 of the NEC applies to switches of all types, although the Code doesn’t include a specific definition for a switch.
What are the 4 classifications of branch circuit?
Branch circuits are divided into four categories: appliance, general purpose, individual and multiwire (see Figure 1). With the exception of branch circuits that supply only motor loads, requirements for branch circuits are in Article 210.
Are multi wire branch circuits legal?
The National Electrical Code permits multiwire branch circuits, but adds requirements to make them safer. Section 210.4(B) states that in the panelboard where the branch circuit originates, all ungrounded conductors must be provided with a means to disconnect them simultaneously.
Is it OK to put a 20 amp outlet on a 15 amp circuit?
According to National Electrical Code, only a 15-amp or 20-amp electrical receptacle can be installed to a 20-amp circuit. A 15-amp receptacle may also be installed on a 15-amp circuit. However, a 20-amp GFCI outlet may not be installed to a 15-amp circuit.
Can you mix 15 amp and 20 amp receptacles?
You can mix and match 15A and 20A. But your garbage disposal should be on a dedicated, circuit. No GFCI required for that circuit.
What is the maximum allowable continuous amp load on a 20 amp circuit?
A 20-ampere, 120-volt branch circuit will carry 2,400 volt-amperes (20 x 120 = 2,400). The maximum number permitted on a 20-ampere branch circuit is three (2,400 รท 750 = 3.2 = 3).
Can a circuit breaker be used as a switch NEC?
Circuit breakers may work more effective as safe switches, but they are not switches. They are not interchangeable. Therefore, using a circuit breaker as a switch is not recommended.
Can you use a white wire as a switch leg?
You can use the white or gray conductor within a cable assembly for single-pole, three-way or four-way switch loops if it is permanently re-identified to indicate its use as an ungrounded (hot) conductor at each location where the conductor is visible and accessible [200.7(C)(2)].
What is the NEC code for light switches?
At least one wall-switch-controlled lighting outlet must be installed in every habitable room (and bathroom) of a dwelling [210.70(A)(1)]. This provision requires at least one lighting outlet in every habitable room and at least one wall switch to control it.
Can the outlets in a bathroom be on the same circuit as the lights?
The Bathroom Needs at Least Two Dedicated Circuits
This is no more. The bathroom electrical code now stipulates that the bathroom must have dedicated circuits that aren’t shared with outlets or lights in any other room.
Can lights and outlets be on the same circuit?
Maybe. The biggest concern is that if you plug in a heavy enough load, your lights might dim due to the in-rush current. Generally a properly wired home should have dedicated lighting circuits that are apart from receptacles.
What is the current National Electrical Code?
Adopted in all 50 states, NFPA 70, National Electrical Code (NEC) is the benchmark for safe electrical design, installation, and inspection to protect people and property from electrical hazards.
Has the 2017 NEC been adopted?
2017 NEC effective July 1, 2017. There is no statewide adoption of the NEC. The state adopted the 2008NEC statewide effective July 1, 2011 for non-building code jurisdictions.
Why do we need to follow the NEC provisions for electrical wiring devices?
Not only do these codes protect life and property, they also help cities and building owners avoid lawsuits by creating a standard set of laws that people can universally adhere to. This is why NFPA 70 has become the standard for electrical requirements.
Which set of rules are to be followed for any new wiring installation?
SOLUTION. According to IE rule, 1956, if any new installations is to be conducted then before the completion of the project, the verification is required according to this rule.
Which rule should be followed in electrical wiring?
Wiring Rules inside a Building
All electrical appliances being used inside a building should have the Bureau of Indian Standard (BIS) mark. Sockets should be 3-pin only. All switches should be connected in phase wiring only. The Power system wiring should have a maximum of 2 points in the circuit.
What does Section 44 ie rule refer to?
(d) improperly uses the energy of a licensee, 4[shall be punishable with imprisonment for a term which may extend to three years, or with fine which may extend to five thousand rupees, or with both], and, in the case of a continuing offence, with a daily fine which may extend to 5[fifty] rupees; and 6[if it is proved …
