New answers tagged

-1 votes

Should there be insulation inside a light fixture?

Putting the insulation inside a light fixture is a very bad idea. This was probably invented by some US electricians/contractors/light fixture makers that had absolutely zero idea about heat transfer. ...
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0 votes

Is there any way to use a UPS properly when there's no ground wire in the outlet? (Uninterruptible Power Supply)

The ground is only needed for suppressing line voltage spikes. Many ups run on their battery power or they convert the line voltage to the battery voltage and then the inverter produces the output ...
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7 votes

Why does my EV charger only draw 6 or 12 amps on a 20 amp circuit?

I doubt you would be complaining if current slackened at the very top of charge (>99%). This suggests a possible problem: overheating of the receptacle due to faulty connection (e.g. series arcing) ...
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1 vote

3 way switch has only 1 traveller wire

I do not have experience with these but looking at them, it's pretty obvious to me. One switch has terminals for line, load, traveler and neutral while the second switch has only traveler and neutral. ...
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3 votes

Why does my EV charger only draw 6 or 12 amps on a 20 amp circuit?

Ed Beal's answer is accurate for most cases. However, I have read that some EVSEs (eg. the one shipped with the RAV4 prime) have a temperature sensor in the plug. So switching to 6 amp could be caused ...
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10 votes

Why does my EV charger only draw 6 or 12 amps on a 20 amp circuit?

The outlet/receptacle is fine. The charger actually controls the charge rate--as the voltage on the battery increases or the battery temp the charge rate is reduced to increase overall battery life. ...
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0 votes

How do you install pod lights in a finished basement ceiling where the drywall was installed with no furring strips?

I am assuming that by "pot lights" you refer to recessed can lights ? Either remove the ceiling drywall and wire things properly. This is going to be the easiest and cleanest install for you....
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2 votes

3 black wires, 2 white wires for wiring up a new switch?

See the solo black wire going to the switch (which is not pigtailed to other blacks)? You would be wise to mark that with red electrical tape. It's not a code requirement, but it will make things in ...
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3 votes
Accepted

What size SER and XHHW-2 do you use with a 200A meter base and a 225A load center (panel)?

This is a 310.15(B)(7) question. Generally, ampacity must be taken straight off Table 310.15(B)(16), rounding disfavorably. The 75C thermal rating is used, since the breaker panel is rated for 75C (...
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-1 votes

16 circuit load center generac to with briggs and stratton

That is a hell of lot wiring. Are you up to it ? The number you gave for "generac automated stand by transfer switch with 16 circuit Load center 50amp 0j0391 > is just for the box, with ...
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0 votes

16 circuit load center generac to with briggs and stratton

Sorry, but I need to post this as an answer bc I know I will run out of room as a comment. Installing an automated stand by generator is not trivial. And why use a "generic" transfer switch? ...
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1 vote

New Leviton GFCI outlet not working

And so, in summary as I just experienced this exact problem with a Leviton 20 Amp GFCI Outlet that was the primary outlet and protected 3 other downstream outlets. If you follow the Leviton directions ...
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7 votes

Need advice for Motel rewire 58 room one story very messy and multiple rooms on one circuit

This brought to you by the name "project planning" A job like this is all about pre-planning every move. Basically you are going to run all the new wire while the old wire is still in use. ...
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-1 votes

Need advice for Motel rewire 58 room one story very messy and multiple rooms on one circuit

A very experienced electrician can do that, work with live wires. You have to decide if you want to risk your life. Just in case you want to risk your life and work on live circuits, wear a good ...
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3 votes

Need advice for Motel rewire 58 room one story very messy and multiple rooms on one circuit

Run. Away. Fast. :) If #1 is undoable, show the owner the problem about multiple rooms being on one circuit. Explain that for a short time, each circuit must be turned off while you isolate one room....
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  • 1,386
1 vote

Compressor is intermittently turning off

I will take a SWAG that is what I would expect and say the compressor is cycling down because of high head pressure. This happens when there is not enough cooling, in your case the fan motor running ...
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  • 3,449
1 vote

How to wire switch with 3 cables and outlet where only 1 is affected by switch

It sounds like you are just trying random things; this is the worst mindset for electricity. Anyways, I think your main problem is that light switch A controls the power to everything after it, not ...
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0 votes

What explains a sudden voltage drop to laundry room?

Does it stay at 60v or change as the washer starts? I was at a house and everytime the washer started the voltage would drop to 98volts and the washer would not start then it would go back to 120v. Pg&...
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4 votes

Is white wire with grey stripes positive or negative wire?

From personal experience: don't rely on the wire marking in regard to polarity. I had once the boring task of shortening some power brick wires from a single batch. I ended up swapping some bricks vs ...
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2 votes

Unfinished basement: OK to mount outlet box on wall?

The box is fine but the Romex or NMB requires protection or conduit, the least expensive way is to run the conduit to the ceiling then put a bushing on the end of the conduit and run the Romex (NMB) ...
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  • 98.1k
4 votes

Unfinished basement: OK to mount outlet box on wall?

The box is fine. Make sure you get the GFCI right - plain receptacle needs to be on the LOAD side of the GFCI. And technically should have a label indicating it is protected by the GFCI, but I would ...
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3 votes
Accepted

15A DF breaker keeps blowing at sub panel hot connection point

This sub 2 breaker is currently only connected to a 15A outdoor light switch with a 15A outdoor floodlight. Light grounding, bonding, and wiring are all good and run with 14/2. While a bad breaker or ...
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6 votes
Accepted

Is This An Approved Way To Connect EMT to Outside Disconnect Through Backside Knockout?

It is code compliant to run the rain tight from the box through the wall. When I do this my concern is water ingress from the hole in the wall. I usually will create a chevron or inverted v of caulk ...
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  • 98.1k
37 votes
Accepted

Is white wire with grey stripes positive or negative wire?

You don't have a voltmeter. Do you have a potato? With the power adapter unplugged from your electrical outlet, cut the wires, strip a little insulation from the ends, twist the wires into a point. Do ...
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  • 3,757
5 votes

Is it okay to plug 16A/250V appliances to a 10A/250V outlet?

TL;DR If the device cords are removable then swap the cord. If they are not removable then it gets complicated... There are two different types of power cables on consumer electronics: Permanently ...
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9 votes

Is it okay to plug 16A/250V appliances to a 10A/250V outlet?

GROUNDING! This will work, it may be dangerous: German 16A plugs ("schuko") are grounded. Devices that are equipped with them require grounding connection. As far as internet goes, in ...
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  • 2,222
0 votes

Is it okay to plug 16A/250V appliances to a 10A/250V outlet?

If it is a standard computer setup, it will not draw more than 500W under full load, that is merely 2 amperes. So, yes, it is safe to plug it into 10A socket. To find the maximum power draw of ...
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4 votes

Is it okay to plug 16A/250V appliances to a 10A/250V outlet?

Yes, probably. As long as your computer, printer and monitor each use less than 16 amps it is ok for them to have 16 amp plugs on them. As long as they use less than 10 amps, it is ok to use a German ...
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  • 17.8k
2 votes

Is white wire with grey stripes positive or negative wire?

In North America the marked (striped or ribbed) wire is neutral (or negative, when it's actually DC). It also has a wider blade on the plug or connects to the outside of a barrel. The conductor ...
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  • 106k
2 votes
Accepted

bringing NM-B into outdoor panel

For exterior panels Where I see a difference is when a panel or disconnect is surface mounted or flush mounted. The flush mounted is considered within the building envelope and NMB is allowed. Push ...
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  • 98.1k
22 votes

Is it okay to plug 16A/250V appliances to a 10A/250V outlet?

The values on the plugs & sockets are for the maximum that the plugs & sockets can support, not what the devices will use. A device that consumes 16A at 250V is using 4000W or 4 kilowatt. This ...
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  • 4,677
1 vote

14-50 outlet -- ok to mount on floor?

Found your Power Outlet model at Home Depo Pass & Seymour 50 Amp 125/250-Volt NEMA 14-50R Surface Mount Power Outlet The instruction says "Wall Mount" The word "Surface mount"...
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0 votes

bringing NM-B into outdoor panel

An answer, of sorts, is given by this lengthy discussion at Mike Holt's forum: https://forums.mikeholt.com/threads/nm-cable-and-the-outdoors.2560023/ Note again that I'm in North Carolina, apparently ...
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5 votes

14-50 outlet -- ok to mount on floor?

The listing instructions are needed: many can be floor mounted but most have to be along a wall (receptacle not facing up) these state wall mount they can be at floor level. There is no minimum height ...
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  • 98.1k
12 votes

14-50 outlet -- ok to mount on floor?

Generally speaking, if a receptacle does not have instructions that include floor mounting, that is not allowed. The usual problem is water. A receptacle on the floor, especially in a kitchen, is far ...
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-2 votes

Should I solder stranded wires when connecting them to a plug?

A good solution for stranded wires in screw terminals: ferrules They are common in some parts of the world. Last time I checked, Lowes & Home Depot did not carry them. I bought a ferrule ...
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0 votes

Ceiling light replacement for 9in square hole

Yes, fixtures are still available that will fit over the hole. You'll want to remove the existing fixture and you'll probably need to install a junction box since the wires probably were supported and ...
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  • 55.2k
2 votes

Compressor is intermittently turning off

You don't happen to have a load management ("demand response") device from the electric utility installed on that air conditioner, do you? These devices allow the utility to turn off air ...
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  • 20.3k
5 votes

Need a peephole camera without modifying peephole

Personally, rather than trusting Android software on obsolete hardware to do this, I'd get a cheap (<£/$10) USB webcam and a Raspberry Pi (similar price for the Pi Zero, plus power supply and case)....
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1 vote

14/3 for dual 120 appliance

Current flows in loops. Neutral is the return current path. You are correct that #14 neutral can't handle any more amps than #14 hot (15A) and obviously, two hots returning 15A each will set a shared ...
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14 votes

Need a peephole camera without modifying peephole

You've fallen into a wrong set of assumptions: the only smartphone-like thing with a camera IS a smart phone all smartphones must be 0-2 years old and costly all smartphones need a costly cellular ...
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1 vote

Need a peephole camera without modifying peephole

You could remove the peep hole, unscrew it. You might have to cut the paint around the perimeter using sharp blade and holding it in 45 Dgr angle. No damage done It is screwed in from both sides. ...
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4 votes

Need a peephole camera without modifying peephole

You could mount a borescope to the peephole. They can be gotten in USB format, also with their own screen and other configurations. I have seen them for under $25.00. I would guess the other ...
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  • 3,449
4 votes

What is this box of wires?

That is old bell telephone wire. The dial tone voltage if active won’t hurt but the ringer voltage is painful. This is how land lines were wired prior to voice over IP (internet protocol) many homes ...
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  • 98.1k
8 votes

14/3 for dual 120 appliance

You're looking at a multi wired branch circuit where two legs on separate phases share a neutral. They are allowed but require a double pole breaker or handle tied single breakers. If you're running ...
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  • 55.2k
1 vote

Solar panels in rental - power plug

You don't. The reason is, well aside from entitlement issues... The electric meter may not cooperate. Meters are not necessarily designed to detect current flow bidirectionally. The old ones' discs ...
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1 vote

Protecting Smoke Alarm Relay from Large (6.5 amp @ 120V) Inductive Load

Motors need beefier switching to maintain controllability. In industrial situations, devices called 'contactors' are used, essentially relays that can handle the inductive kickback from a motor ...
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  • 1,386
1 vote

Why does my Central A/C Keeps Blowing its Fuse?

Your using the wrong style fuses. Use a time delay fuse , which is for motors. Hence FNR vs FLNR. FNR is made with a time delay which allows for the large burst of current to start the motor. FLNR ...
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6 votes
Accepted

Protecting Smoke Alarm Relay from Large (6.5 amp @ 120V) Inductive Load

Sounds like a job for a RiB or Aube relay. These are both UL-Listed general purpose relays made specifically for applications like this. You must use UL listed equipment (not UR-Recognized ...
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-2 votes

Changing Old Fan to new light only LED Fixture

Here is the same answer as from Jack But as graphic
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