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I have two main 3000 amp 480 volt 3 phase services on
I have two main 3000 amp 480 volt 3 phase services on separate transformers. both services are fed with 3 phases and a neutral. services are grounded via plant ground grid. I am eliminating one of the… read more
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I have a comercial facility in NYC about 15 years old that
I have a comercial facility in NYC about 15 years old that has fluorescent light fixtures hanging from chains wired with 12 awg wires without a casing, each wire has its own insulation but they are no… read more
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Answer to Question 1: General Lighting and Receptacle Load:
Answer to Question 1: General Lighting and Receptacle Load: ____________________ Small-Appliance Branch Circuit Load: ____________________ Laundry Branch Circuit Load: ____________________________ Tot… read more
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Next bunchy of questions as I figure out a kitchen remodel.
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I have a PV array described below: I am looking Short
I have a PV array described below: I am looking for the Short Circuit Current Calculation for the Array. 1. Solectria PVI 20 TL-480 inverter: http://solectria.com//site/assets/files/1412/pvi_14-36tl_d… read more
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Name is Ed. I need to know how far a meter can be from the
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This is a real situation. A light fixture recently causes a
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New home with two 200 Amp panels....each panel has a main breaker
New home with two 200 Amp panels....each panel has a main breaker rated at 200 amps. Does NEC require one 400 amp main breaker also for this installation?… read more
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Are there any certifications necessary to create a product
Are there any certifications necessary to create a product that taps into the power behind a light switch? For example, If I wanted to create a product that replaces a light switch with a faceplate th… read more
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i need to know if Romex or NM cable is permissable for use
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I was told that the 2014 NEC states that all receptacles must
I was told that the 2014 NEC states that all receptacles must be installed with the ground pin up. Is this true? If so, any point of reference?… read more
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Hello to know the wiring diagram of pwrs-0020-01 please
Hello to know the wiring diagram of pwrs-0020-01 pleasefor a digital video mixer ( videonics mx pro mx-3000 ntsc ) i want the transformer model pwrs-0020-01 or the run in each pin ( 8 PIN ) SERIAL NO … read more
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Does a hydronic circulating pump need UL certification to meet
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Can you clarify for me what the NEC 2005 statute says for
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Were junction boxes required for a commercial building built
Were junction boxes required for a commercial building built in 1948. I cannot find the NEC 1948 code… read more
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the NEC states that the total rating of a plug-connected room
the NEC states that the total rating of a plug-connected room air conditioner, where lighting units or other appliances are also supplied, shall not exceed_______________ Percent of the branch-circuit… read more
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Trying to get an Occupancy Permit for a home I inherited. About
Trying to get an Occupancy Permit for a home I inherited. About 18 electrical violations. Most minor. Major items include. Service Entry. No goosneck, frayed enty cable, improper drip loop, to low. GF… read more
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Can you please confirm sizing method for a pullbox for conductors
Can you please confirm sizing method for a pullbox for conductors OVER 600 volts? The box has a 4 inch conduit entering at the bottom with 3- 1" diameter cables. The same size conduit and conductors e… read more
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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