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I know that 220v are supplied to residential. How many volts
I know that 220v are supplied to residential. How many volts are typically brought into a commercial building? If the legs are more than 110v does the tenant have to supply step down transformer? Same… read more
Kevin
Kevin
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Diploma
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Need done asap 006036RR Electrical Blueprint Reading 1. Use
Need done asap 006036RR Electrical Blueprint Reading 1. Use the series of plates supplied with your study unit to answer this question: How many two-pole 30-A breakers are installed in panel PP1? A. T… read more
Expert
Expert
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1. According to the NEC, conduit seals are required within
1. According to the NEC, conduit seals are required within _______ inches from a pressurized enclosure when the conduit is not pressurized in Class I, Division 1 protection systems. A. 24 B. 30 C. 12 … read more
Expert
Expert
I am installing three way vacancy sensor switch that
I am installing three way vacancy sensor switch that automatically turns the lights off. The new Lou Tron has four wires and the old switches have three. How do I wire? The pictures are of both switch… read more
Sam I
Sam I
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What's the easiest way to set up a bathroom fan so that it
What's the easiest way to set up a bathroom fan so that it comes on when the light is turned on and stays on for 15 or 20 minutes after the light is turned off? This is for a tenant suite in a basemen… read more
Kevin
Kevin
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1. Use the series of plates supplied with your study unit to
1. Use the series of plates supplied with your study unit to answer this question: In the manufacturing facility, transformer T1 provides panel A. LPB with voltage stepped down from 480 V to 230 V. B.… read more
James Inch
James Inch
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I want to install Led lights bars in my office ( not
I want to install Led lights bars in my office ( not residential ) . In fact , 3 led bars of each 21W on a plug -in 120vAC/12vDC Ul Listed driver/adapter of 72W. Now , I read a week ago that this migh… read more
AssuredElectrical
AssuredElectrical
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High School or GED
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I would like to identify A, , C phases at my shop. I realize
I would like to identify A, B, C phases at my shop. I realize it is not necessary but I would really like to know Is there a way , is there truly and A,B,C or is it just the way the power company brou… read more
AssuredElectrical
AssuredElectrical
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High School or GED
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I am trying to test out which LED dimming wall switch will
I am trying to test out which LED dimming wall switch will work with a dimmable LED wall sconce (hardwire/direct-wire). Is there a way to test the dimming capacity and compatibility without installati… read more
Mike G.
Mike G.
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Vocational, Technical or Trade Scho
8,290 satisfied customers
. Where the resistance to ground of a single made electrode
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AssuredElectrical
AssuredElectrical
Master Electrician
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i have a leviton lighting control panel that is feed 208 line
i have a leviton lighting control panel that is feed 208 line voltage running can lights, the light flicker when they are all on. I can turn 3 of the four ckts off and the flicking stops. do I have a … read more
DrSpark1
DrSpark1
Retired Master Electrician
Vocational, Technical or Trade Scho
31 satisfied customers
At a commercial building, on the top of an exterior stucco
At a commercial building, on the top of an exterior stucco pillar (12' high), there is a box with no light that has two brown wires wired together and two purple wires wired together. When testing the… read more
AssuredElectrical
AssuredElectrical
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I purchased a Cooper OS310U Auto Sensor, it has a black, green,
I purchased a Cooper OS310U Auto Sensor, it has a black, green, white, blue, red. The instructions are pretty good as to what they are. Black=hot, Green=ground, White=nuetral, Red=output. However when… read more
Mike
Mike
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3. A 16-kW residential electric range shall be considered to
3. A 16-kW residential electric range shall be considered to have a branch circuit demand of A. 8 kW. C. 16 kW. B. 9.6 kW. D. 17.6 kW. 4. What minimum size of copper wire should be used to connect bet… read more
Sir Sparks
Sir Sparks
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Is it possible to wire two (2) each Levton PR180 Single/3way
Is it possible to wire two (2) each Levton PR180 Single/3way motion activated light control switches into a 3-way circuit with the PR-180's at each end of a hallway? The instructions that came with th… read more
Jason
Jason
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Just installed a Leviton OSSNL to replace a PR180 (the PR180
Just installed a Leviton OSSNL to replace a PR180 (the PR180 wasn't suitable for electronic ballasts) controlling two fixtures of 4xT8 bulbs each. One fixture comes on as expected and all functions of… read more
Mike G.
Mike G.
Master Electrician
Vocational, Technical or Trade Scho
8,290 satisfied customers
I have a wall switch that is asking for a neutral along with
I have a wall switch that is asking for a neutral along with a hot, load, and ground. My box seems to just have two wires and a ground. Is it possible to connect the neutral to one of those lines to h… read more
Mike
Mike
Master Electrician
Working on MBA
1,426 satisfied customers
why on a 3-phase 480 feed would phase A & B have no voltage
why on a 3-phase 480 feed would phase A & B have no voltage on it together,but phase A & C do and B & C do also,could I have lost a leg???… read more
Sir Sparks
Sir Sparks
Owner
State & UK Certified Master electri
2,519 satisfied customers
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Meet the Experts:

Mike

Mike

Master Electrician

1,426 satisfied customers

Licensed Master Electrician - OnQ Certified Data Voice Audio Video Installer

Jason

Jason

Service Technician

3,958 satisfied customers

Over 20 years of experience in all types of installations, troubleshooting, and repairs.

Mike G.

Mike G.

Master Electrician

8,290 satisfied customers

Proven Professional 49 years Experience

Kevin

Kevin

Licensed Electrical Contractor

4,414 satisfied customers

31 years Licensed Electrical Contractor in Illinois, Adjunct College Electrical Instructor, Former Electrical Inspector, Diploma: Digital Electronics, FCC Technician License

AssuredElectrical

AssuredElectrical

Master Electrician

3,264 satisfied customers

Contractor-42+ Years in the ElectricalTrade

electrifier

electrifier

Master Electrician

1,458 satisfied customers

Electrical contractor and electrical inspector for over 24 years with phone and networking expertise

Rich

Rich

Master Electrician

1,117 satisfied customers

Over 35 years residential, commercial, industrial wiring, install, troubleshoot, service, maintain

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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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