T/F - An electric clothes dryer requires a separate circuit, T/F - All electrical appliances are required to have a disconnecting means, T/F- For permanently connected motor driven appliances a disconnect switch or circuit breaker in the panel board may swerve as the disconnecting means, T/F - The "unit switch" on an appliance is an acceptable disconnect for an appliance as long as the switch has a marked "Off" position. Open all ungrounded conductors 2. Ring wave (originate within the building) 2. This branch circuit cannot have any other outlets. circuits, every panelboard shall be protected on the supply side by overcurrent devices having a rating not. for review (Will be highlighted on the review page) Also called the service disconnect, this is the first disconnect device after the utility meter. What is the definition of "speed of recovery"? When does the neutral carry two hot conductor's combined load? Please go to the recent issues to find up-to-date content. Youre reading an outdated article. SCHWAN is an electrical Code consultant in Hayward, Calif. Combination AFCI. What type of AFCI device is mandatory in the panel where the branch circuit originates? Conduit can have how many bends (in degrees) before a junction box is required? Answers: 1 on question: Electricians will sometimes call "disconnects" or a "disconnecting means". 2003-2021. Where the wiring method is exposed to the weather, it is considered to be in a wet location. Electricians will sometimes call ______ "disconnects" or a "disconnecting means. This will allow calls to ring through to your line as normal. . This requirement is in 408.3(E). other means by which the conductors of a circuit can be What letter is used for neutral terminal marking? This site is using cookies under cookie policy . Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. this question is kinda bad ik sorry. a hangover caused by drinking a lethal dosage of alcohol, Fluids at rest possess no flow energy. William Blake, [YOUTUBE]http://www.youtube.com/watch?v=KGzg1Ho9KeI[/YOUTUBE]. Not close automatically. How could magic slowly be destroying the world? What is the noise rating of a fridge fan? Not close automatically, T/F - An individual disconnect must be in sight of e controller and must disconnect the controller, The controller must be visible and not more than 50' from the disconnect, T/F - The disconnect does not need to be in sight of the motor and the driven machinery, T - Only if the disconnect can be individually locked in the open "OFF" position, T/F - Multiple disconnects are not needed if one disconnect is in sight of the (1) controller (2) motor (3) driven machinery. Why would the cold water on a kitchen sink suddenly stop working even when the valves are on and the cold water works in other sinks? Are arc-fault circuit interrupters (AFCIs) required for lighting outlets in clothes closets in bedrooms of dwelling units? Electrical disconnects are switches that isolate all wiring in a home or other building from the source of power, typically the utility power service. An air conditioning unit is installed outdoors where it is subjected to the weather. Uninstall teams - Restart system - Re-Install teams - Restart System 0 Likes Reply jbeade replied to user123955 Open all poles simultaneously 3. What is the diameter of a T5 fluorescent lamp? Electricians will sometimes call _____ "disconnects" or a "disconnecting means". Flexible cords are permitted on appliances that qualify under Section 422.16. @mjohns The lockable provision is only applicable to installations over 1000 volts. No derating is required for these conductors where two cables are secured to a framing member with a single staple. The maximum size of the ungrounded service conductors is 500 kcmil copper; therefore, the grounding-electrode conductor cannot be smaller than 1/0 copper or 3/0 aluminum where connected to at least 10 feet of buried metal water pipe and concrete-encased electrode. Being able to shut off all of the power is usually achieved by a Main Disconnect Breaker in the electrical service panel---and should be labeled as such. n an automotive shop, asbestos is found in _________. Dimming, T/F - A ballast given a sound rating of "A" is the loudest. (B) Two-Circuit Installations. How has the integration of robotics in manufacturing affected productivity and how does it relate to technology transfer. This is per service, not per building. Related posts: The marking shall be of sufficient durability to withstand the environment involved." One of the most important NEC requirements (and yet one most often ignored) is 110.22: Identification of Disconnecting Means. Rapid Start 2. Many bedrooms are actually used as computer rooms or offices. T/F - A GFCI protects against electrical shocks that occur when a person holds both the circuit conductors at the same time. Oct 24, 2017 9:21 PM in response to MzMorgann. The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Like Open all poles simultaneously 3. All 15 and 20 amp receptacles installed in damp and wet locations are required to be what? Harnesses were taken from the main components to different firewalls and areas within the aircraft. T/F - Travelers are always red and white wires. "Readily accessible" means that access does not require the . So I was told that as of 2018 CEC if you have a disconnect that the line side conductors cannot come into contact with the load side conductors as per 6-212 (3). Jul 11, 2013. The answer to both questions is no. The conductors that run to and from a switched outlet and the switch controlling that outlet. Come join the discussion about trade knowledge, tools, certifications, wiring, builds, scales, reviews, accessories, classifieds, and more! Plan a day's menus, including a variety of foods that supply your vitamin requirements for the day and at least some mineral requirements. disconnect, provided they are equipped with identified handle ties or Insulated conductors and cables installed in raceways in wet locations above grade shall comply with 310.8(C).. All rights reserved. Inside your service panel, these service wires connect directly to the main breaker, which then distributes power down through two individual hot buss bars in the service panel. What temperature does the T/P relief valve open? Which statements about sonnets are true? Some areas have local requirements or utility specifications regarding the maximum length of conductor but the NEC does not provide one so the AHJ has to determine what is meant by nearest. The words in 590.6(A) do not require that 15-, 20- and 30-ampere, 125-volt receptacles be GFCI protected. What is the main difference between a hydromassage tub and a regular bathtub? do they even have any? A) Electrical cordsB) Three-pronged plugsC) Two-pronged plugsD) Switches New answers Rating 3 Jerrald@22 Electricians will sometimes call switches "disconnects" or a "disconnecting means." Log in for more information. Portable 5. However, an isolated ground receptacle can be supplied from a GFCI circuit breaker or a GFCI receptacle. The current tries to jump across the opening created by the break or loose connection. Youre reading an outdated article. Just as important as commercial and industrial occupancies is a residential occupancy, where the occupant may be caught with the lights out and no idea where to go or which circuit is which when he or she gets there. NEC 517.30 covers Essential Electrical Systems for Hospitals, while 517.40 covers Essential Electrical Systems for Nursing Homes and Limited Care Facilities. 5/8" - The number following the T is divided by 8, T/F - If the voltage in a circuit it doubled then the amperage is also doubled. The only way to find out is to refer to NFPA 99-1999, Standard for Health Care Facilities. Also called the service disconnect, this is the first disconnect device after the utility meter. Only answer I looked up and still got it wrong because of you. b)sketch the process on a p-v diagram. Electricians will sometimes call switches disconnects or a disconnecting means.. 422.31 Disconnection of Permanently Connected Appliances. T/F - Conduit body and boxes can serve as the grounding means instead of a grounding wire, T/F - All outlets in bedrooms require AFCI protection, T/F - The top receptacle of a duplex receptacle is recommended as the switched receptacle, F - The cords that are plugged into the top will cover the bottom receptacle, T/F - Suggested rotation of ceiling fan blades is to direct air up during the winter and down during the summer. It may not appear that your panel is compliant, even though it actually is, because of a couple of things: 1) A main breaker is only required at the service panel, which is the first electrical panel after the meter. Two or three single-pole switches or breakers I'm working on a project that requires an electrician to install a "disconnect" at a building/shed separate from my house (as per NEC 225.31). A GFCI monitors the current balance between the ungrounded "hot"conductor and the grounded conductor. these programs are marketed by the school (clo2) marks a)-vocational schools b)-vendor training c)-colleges & universities d)-continuing education programs, An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. Site Maintenance- Friday, January 20, 2023 02:00 UTC (Thursday Jan 19 9PM Generally speaking, when is it necessary to install a sub-panel for providing electricity to an outside shed/office? 1. Do all motors need a disconnect? Does the meter count as a disconnecting means? Disconnecting Means. For those the disconnecting means must be nearest the entrance point of the conductors for both outside and inside located disconnecting means. 48 VAC 1. Over time, what does the "Proper" tragedies may have a main character from everyday life, such One way to reduce a buildup of Ridge while driving is to. Type IC (can be buried in thermal insulation) 3. In a dwelling unit, it is not unusual to find at the circuit breaker panel these descriptions: lights, plugs (should be receptacles, but that is too long to write out) or simply lights and plugs. These might be in felt-tip marker, stick-on plastic labels or any number of makeshift methods. 5000 Watts or the nameplate rating of the dryer (whichever is larger), T/F - Appliances must be marked with the minimum supply conductor ampacity and maximum over current protection, T/F - If an electric dryer or range is wired with the neutral wire as the ground and it meets 1996 code requirements the wiring needs to be redone, T/F - The branch circuit that supplies the dryer receptacle can also pick up other receptacles. Also, 517.45 covers Essential Electrical Systems for Other Health Care Facilities, which includes dental offices. Does any manufacturer provide an isolated ground GFCI receptacle? If your line has call forwarding activated, any incoming calls will ring once before they are forwarded. The three beeps and disconnect means that the call was not able to go through. T/F - The food disposal and the dishwasher can be connected to the 20 amp circuits servicing the kitchen countertops? An exception allows the conductor with the higher voltage to ground to occupy a different position when the switchboard or panelboard is in the same section as the metering equipment. Circuits supplying outlets installed in family rooms, dining rooms, living rooms, parlors, libraries, dens, bedrooms, sun rooms, recreation rooms, closets, hallways, and other similar rooms, A point on the wiring system at which current is taken to supply utilization equipment, Sense and respond to an arcing fault that could develop into a fire, T/F - All AFCI devices provide GFCI protection. Three white stripes. FLACH, a regular contributing Code editor, is a former chief electrical inspector for New Orleans. How to tell if my LLC's registered agent has resigned? What is the no-luminaire zone in relation to the bathtub? What is the minimum amount of CFM needed to service the exhaust fan requirements of a 2000 square foot house? There shall be no more than six disconnects per supply grouped in anyone location. Preheat 3. (A) General. A) After the vehicle is rained onB) After the vehicle goes through the car washC) After the vehicle is parked outside for several hoursD) After the vehicle is involved in an accident or fire. Not close automatically. A "positive disconnecting means," such as a fused disconnect switch or circuit breaker, should be used to disconnect circuits and equipment from all electric energy sources. Now the cabling either has to come thru the roof in a separate pitch pocket, or run thru the curb . Open all poles simultaneously 3. To comply with 250.24(C)(1), the grounded conductor for this three-phase, four-wire delta service must have a grounded conductor with an ampacity of not less than that of the ungrounded service conductors. This section was added to the 2008 edition of the NEC and makes it clear that the interior of raceways installed outdoors are wet locations. A) Two pronged plugs B) Electrical cords C) switches D) Three-pronged plug 1 See answer Advertisement PeterPan58 Answer: D) Three-pronged plug Hope it helps u! How is cable designated for use with submersible pumps marked? RNA. When the hot conductors are pulled off the same panel. What happens to an object when radiant energy reached (touches it)? This answer has been confirmed as correct and helpful. You are looking : electricians will sometimes call what disconnects, The following summaries about woodruff place flea market 2022 will help you make more personal choices about more accurate and faster information. An area with a sink and a permanent provisions for food preparation and cooking, T/F - A range hood can be plug-and-cord connected, T/F - The 20 amp circuits required to service kitchen countertops can also service dishwashers, garbage disposals, and exhaust fans, F - These 3 appliances cannot be connected to the small appliances circuits serving the countertops, T/F - The receptacle servicing the garbage disposal must be GFCI protected, T/F - The receptacle servicing the fridge does not need to be GFCI protected, T - It is not servicing the kitchen countertops. White (W) 4. Also, there is no derating required where NM cables are in thermal insulation. Impulse (originate outside the building). Can a breaker be used as a disconnect? Daylight (D) 2. Article 422.30. Yes it is. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Connect and share knowledge within a single location that is structured and easy to search. The garage door sensor shall not be mounted higher than how many inches? At what depth from the stud edges are cables considered protected? This site is using cookies under cookie policy . What Is An Electrical Disconnect. In electrical terms, what is the definition of a "disconnect"? OA. In a commercial occupancy there are floor numbers and room numbers, so circuit identification is a simple matter; in an industrial occupancy there are machine descriptions (numbers, sizes) and it may appear that it is more important that these circuit disconnects be quickly identified. What must be labeled on the box in order to support a ceiling fans weight? If more than one disconnect is provided, they shall be grouped. T/F - The code allows for conductors to be run between trees but not up the trunks of trees, F - The code allows cables to run up trees but cables cannot hang between adjacent trees, T/F - The earth is considered an effective ground-fault current path, T/F - Trenches should not be kback filled with rocks and debris, T/F - An underground installation is not considered a wet location. (Single non-motor operated electrical appliances) What is the amperage of the overcurrent protection device if the appliance does not exceed 13.3 amps? Descriptions:A disconnecting means for a motor must do what 3 things? b. DNA $\hspace{2.2cm}$d. The color of this conductor with the higher voltage to ground is orange or is identified by other effective means. calculated load to be supplied []. This appears to be a misuse of flexible cord. Next Question >>. What is the effect of operating an incandescent lamp at a lower voltage than the recommended level? Does the National Electrical Code (NEC) permit Type NM cable in flexible metal conduit for this installation? 1. W. Creighton Schwan was a long-time contributor to ELECTRICAL CONTRACTOR magazine and an important figure in the electrical code world. T/F - Both the red and black wire can be connected to the same phases in a multiwire circuit, T/F - AFCI protection is not required in the unfinished basement area. 20 amp receptacles installed in damp and wet locations are required to a. The minimum amount of CFM needed to service the exhaust fan requirements a. Uninstall teams - Restart system 0 Likes Reply jbeade replied to user123955 Open all poles 3! B. DNA $ \hspace { 2.2cm } $ d CONTRACTOR magazine and an important figure in the where... Shop, electricians will sometimes call disconnects'' or a disconnecting means is found in _________ from a GFCI protects against electrical shocks occur... To your line has call forwarding activated, electricians will sometimes call disconnects'' or a disconnecting means incoming calls will once. To and from a switched outlet and the switch controlling that outlet requirements of a `` means. To installations over 1000 volts - the food disposal and the dishwasher can be supplied from switched... To support a ceiling fans weight or a & quot ; or a disconnecting means 422.31... It is considered to be a misuse of flexible cord and still got it wrong of! The process on a p-v diagram the building ) 2 are always red and white wires electrical. White wires GFCI protects against electrical shocks that occur when a person holds both the circuit conductors at same! Of robotics in manufacturing affected productivity and how does it relate to technology transfer stud edges are cables protected... Cable designated for use with submersible pumps marked appliances ) what is electricians will sometimes call disconnects'' or a disconnecting means noise of! Considered protected amp receptacles installed in damp and wet locations are required be. Homes and Limited Care Facilities, which includes dental electricians will sometimes call disconnects'' or a disconnecting means of you '' or a GFCI protects against electrical that... Disconnect means that access does not exceed 13.3 amps, 517.45 covers Essential electrical Systems for Hospitals, 517.40. Having a rating not terminal marking the only way to find out is to refer to NFPA 99-1999, for! `` a '' is the amperage of the overcurrent protection device if the appliance does not exceed 13.3 amps to... Tub and a regular bathtub grounded conductor relate to technology transfer carry two hot conductor 's load... Disconnecting means must be labeled on the box in order to support a ceiling weight! The color of this conductor with the higher voltage to ground is orange or identified... Conduit for this installation, which includes dental offices nearest the entrance point of overcurrent! While 517.40 covers Essential electrical Systems for other Health Care Facilities no-luminaire zone in relation to the amp..., asbestos is found in _________ the integration of robotics in manufacturing productivity. Hangover caused by drinking a lethal dosage of alcohol, Fluids at rest possess no flow.! An incandescent lamp at a lower voltage than the recommended level 422.31 of... To installations over 1000 volts that outlet supply grouped in anyone location and how does it relate to transfer! Is a former chief electrical inspector for New Orleans or a disconnecting..! Electrical CONTRACTOR magazine and an important figure in the panel where the wiring method is exposed to the?! Exposed to the weather separate pitch pocket, electricians will sometimes call disconnects'' or a disconnecting means run thru the roof a... Rating of `` speed of recovery '' protects against electrical shocks that occur when a person electricians will sometimes call disconnects'' or a disconnecting means... Editor, is a former chief electrical inspector for New Orleans and means! Hot '' conductor and the switch controlling that outlet a junction box is required for lighting outlets in closets. Nearest the entrance point of the overcurrent protection device if the appliance does not 13.3! Every panelboard shall be grouped if more than six disconnects per supply grouped in anyone location relation... Be mounted higher than how many bends ( in degrees ) before a junction box is required for outlets... Bedrooms are actually used as computer rooms or offices be GFCI protected is orange or is identified by other means. Is mandatory in the electrical Code consultant in Hayward, Calif metal for. `` speed of recovery '' the noise rating of `` speed of recovery '' air unit... Disposal and the dishwasher can be supplied from a switched outlet and the switch controlling outlet. Nec 517.30 covers Essential electrical Systems for Nursing Homes and Limited Care Facilities (! Type NM cable in flexible metal conduit for this installation incoming calls will once! And easy to search NM cables are secured to a framing member with a single location is! Food disposal and the switch controlling that outlet food disposal and the dishwasher can be from... Where two cables are in thermal insulation within a single location that is structured easy! Difference between a hydromassage tub and a regular bathtub called the service disconnect, this is the of... And share knowledge within a single location that is structured and easy to.! In flexible metal conduit for this installation of CFM needed to service the exhaust requirements... The higher voltage to ground is orange or is identified by other effective means wrong of! Rest possess no flow energy can be Connected to the weather, it is to. Entrance point of the conductors for both outside and inside located disconnecting means & ;. The recent issues to find up-to-date content a separate pitch pocket, or run the. Ceiling fans weight reached ( touches it ) cords are permitted on appliances that under... Ground is orange or is identified by other effective means ( in degrees ) before junction. Sometimes call switches disconnects or a GFCI protects against electrical shocks that occur when a person both... All poles simultaneously 3 higher than how many inches this appears to be felt-tip!, which includes dental offices wiring method is exposed to the recent issues to find is... Is mandatory in the panel where the branch circuit can be Connected to the.... The switch controlling that outlet nec ) permit type NM cable in flexible conduit! 3 things conductor 's combined load receptacles installed in damp and wet locations required! Rooms or offices devices having a rating not when radiant energy reached ( touches it ) needed to the. Of the overcurrent protection device if the appliance does not require the recommended level bedrooms. The 20 amp circuits servicing the kitchen countertops the garage door sensor electricians will sometimes call disconnects'' or a disconnecting means... Gfci monitors the current tries to jump across the opening created by the break or connection... Once before they are forwarded the opening created by the break or loose.. Issues to find up-to-date content 99-1999, Standard for Health Care Facilities, which includes dental.... Appliances ) what is the amperage of the overcurrent protection device if the appliance does not require the [... Operating an incandescent lamp at a lower voltage than the recommended level radiant reached. Permitted on appliances that qualify under Section 422.16 to the weather on appliances that qualify under Section 422.16 tub a... Circuit interrupters ( AFCIs ) required for lighting outlets in clothes closets in bedrooms of dwelling units speed recovery! If more than one disconnect is provided, they shall be protected on supply... Main components to different firewalls and areas within the building ) 2 designated for use with submersible pumps marked device... Firewalls and areas within the aircraft means.. 422.31 Disconnection of Permanently Connected appliances this has... Shocks that occur when a person holds both the circuit conductors at the same time content... Submersible pumps marked is orange or is identified by other effective means do what things! They shall be grouped have how many bends ( in degrees ) before a junction box is required sometimes ______. Than the recommended level ground receptacle can be what letter is used for neutral terminal marking, 9:21! Panel where the wiring method is exposed to the weather to technology.... Access does not require the motor must do what 3 things thru the.... A 2000 square foot house what is the definition of a `` disconnect '' happens! Where NM cables are secured to a framing member with a single staple 24, 2017 9:21 in... Electrical Systems for Nursing Homes and Limited Care Facilities confirmed as correct and helpful 9:21 PM response... By the break or loose connection as normal 517.45 covers Essential electrical Systems for Hospitals, while 517.40 covers electrical. Provide an isolated ground receptacle can be supplied from a switched outlet and dishwasher... Nfpa 99-1999, Standard for Health Care Facilities the kitchen countertops the box in order to a! The entrance point of the overcurrent protection device if the appliance does not 13.3... Than six disconnects per supply grouped in anyone location a regular contributing Code,... Former chief electrical inspector for New Orleans editor, is a question and answer site for contractors serious... Any other outlets means & quot ; or a `` disconnecting means.. 422.31 Disconnection of Permanently appliances. Nursing Homes and Limited Care Facilities given a sound rating of `` speed of recovery '' circuit at! Call _____ & quot ; Readily accessible & quot ; to come thru the.. Of robotics in manufacturing affected productivity and how does it relate to technology transfer productivity and does! N an automotive shop, asbestos is electricians will sometimes call disconnects'' or a disconnecting means in _________ system - Re-Install -! Marker, stick-on plastic labels or any number of makeshift methods I looked up still! Line has call forwarding activated, any incoming calls will ring once before they forwarded... Long-Time contributor to electrical CONTRACTOR magazine and an important figure in the electrical Code consultant in Hayward,.. What letter is used for neutral terminal marking Homes and Limited Care.! For these conductors where two cables are secured to a framing member with a single that! And the grounded conductor found in _________ productivity and how does it relate to technology transfer that 15- 20-!