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Recent Voltage questions

I plugged a TV into a grounded 3 prong outlet, then when I

I plugged a TV into a grounded 3 prong outlet, then when I attempted to connect the coaxial cable it sparked (enough to burn the cable connector). This is in an area of newer electrical work in an older home. Testing with a multimeter shows 117v across terminals, 117v from short slot (black) to ground, and 0 from long slot (white) to ground. Noncontact tester lights up anywhere near the plug. Other plugs in the same circuit test same way. Connecting the same TV and coaxial to an outlet on a different circuit (via extension cord) gave no problems. Connecting a TV with 2 prong plug to same outlet and coax also gave no problems. I am in the construction business and relatively competent in electrical but I can't find a source for this problem.

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Mike G.

Master Electrician

Vocational, Technical or Trade Scho

10,506 satisfied customers
I lost power to a portion of my home during a storm. I did

I lost power to a portion of my home during a storm. I did some "research" that told me to turn off breakers in the box, the flip the main breaker on and off two times. I did so and power seemed to be restored. The clock is working on my stove but it won't heat. Some of my outlets are fine but where my microwave was plugged in, I turned on the microwave, the light inside came on, then faded and the table wouldn't turn. I have a window unit in my bedroom on its own breaker. Now, it will run but not cool, for a couple of minutes, shut off and my TV went off, too, then they come back on. My water heater isn't working so I was going to turn it off but when I flipped the breaker, the TV also went off. My electric company is a co-op and no human to talk to on weekends. Is there any chance the problem is on their end? I am pretty handy if I know what needs to be done. I can not afford to call in a professional. Thank you.

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Kevin

Supervising Electrician

Diploma

4,832 satisfied customers
The plug's switch trips at the main board when too much

The plug's switch trips at the main board when too much electricity gets used. If the dishwasher is running and I switch on two stove plates, then it is fine but if I switch on a 3rd plate, then the plug's switch trips. What is the solution?

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Mike G.

Master Electrician

Vocational, Technical or Trade Scho

10,506 satisfied customers
This house has a 200amp panel, the service entrance cable

This house has a 200amp panel, the service entrance cable comes from underground to the meter. The homeowner asked me if he could install a junction box in the SEC between the meter and the house panel. He has a barn he just built and wants to install a 200amp three phase panel and power it from the junction box he would have installed between the SEC and house panel. I told him that may be overloading your SEC which I have not checked yet to see what size the cable is yet, and is it even possible to splice power feeding three phase off of a SEC. He is trying to avoid the sub panel drawing out of his house panel. If this don't make sense I will try to rephrase the questions

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Kevin

Supervising Electrician

Diploma

4,832 satisfied customers
I have an Insignia NS-37L550A11 rated 120V~60Hz 150W. I am

I have an Insignia NS-37L550A11 rated 120V~60Hz 150W. I am trying to power it with a Bestek 1000W power Inverter, Model No. MRI10011, specifications; power; rated 1000W, Max 1200W, Peak 2400W. Input voltage; DC11-15V, Outdput voltage; AC110-120 60Hz, Low voltage protection; DC10-10.5V, Over voltage protectin; DC15-16V. When I plug the inverter into the tv cigarette adapter and power up the green light comes on. When I plug the tv into the inverter, the red standby light comes on indicating power. When i hit the power button, the red light goes to blue and after a moment or two, the screen flickers and the tv powers off. The inverter remains in a green light condition. Why wont this inverter run my tv?JA: I'll do all I can to help. How long have you been dealing with this?Customer: Just today. I oredered and received the inverter yesterday. I'm rigging up my RV for dry camping and want to be able to watch tv for an hour or two in the evening after I power off the generator.JA: Do you plan on doing the work yourself?Customer: so far. I thought it would be as simple as ordering an inverter, plugging into the cigarrett adapter power source and turn on the tv.JA: Anything else we should know to help you best?Customer: I have a 13 in Insignia that works fine on the inverter. However, it's a 12 v tv with a power adapter for 110 120 v.

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Steve G.

Chief Engineer

13,448 satisfied customers
I have a 4 gang box (1 FEED )with 4 dimmers switching 4

i have a 4 gang box (1 FEED )with 4 dimmers switching 4 different sets of fixtures. when the fire alarm goes into alarm i need to override the dimmers and have the lights go on 100%.do they make a relay for this ?somebody suggested i can use a lighting contactor panel and wire in parallel with the dimmers. not familiar with contactors at all. can you recommend one to use and a wiring diagram please.thanks in advance

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Mike G.

Master Electrician

Vocational, Technical or Trade Scho

10,506 satisfied customers
I replaced a wall light with a new one, and re-connected the

I replaced a wall light with a new one, and re-connected the white supply wire to the new fixture white wire, and connected black to black. When I turned the breaker back on the light will come on, but will not turn off at all.

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Kevin

Supervising Electrician

Diploma

4,832 satisfied customers
I'm wiring in a buck-boost transformer and I need some sort

I'm wiring in a buck-boost transformer and I need some sort of picture of how the connections are made between heavy gauge wire and small gauge wire.JA: How old is the system in question? And have you consulted an electrician yet?Customer: Its brand new. An electrician installed every other part of this system except for the transformer, but no, I have it consulted an electrician for this particular part yetJA: Do you plan on doing the work yourself?Customer: I was hoping to, yesJA: Anything else we should know to help you best?Customer: I have a diagram of which wires to attach together, but I'm really just hoping for some info on which type of connectors to use.

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ProGrade

Electrical Contractor

1,118 satisfied customers
I have voltage at the light switch but no voltage at the

I have voltage at the light switch but no voltage at the light outlet box. Checked all GFCI outlets and breaker box and everything is working perfectly.JA: I'll do all I can to help. How long have you been dealing with this?Customer: For about 1.5 months. Went to replace old outdoor light and noticed no power at light outlet.JA: Do you plan on doing the work yourself?Customer: YesJA: Anything else we should know to help you best?Customer: No- thanks

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Kevin

Supervising Electrician

Diploma

4,832 satisfied customers
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