32 votes
Accepted

What could be causing changes to a smart bulb to affect a regular bulb on the same circuit?

You're looking at the problem upside down. You are thinking the smart bulbs are causing it. Actually, the Lutron Caseta dimmer is causing it. The smart bulbs are behaving normally, however their ...
26 votes

Techniques to wrap the innards of electrical switches and outlets with electrical tape?

There is no need for tape inside a device box except perhaps as a wire colour marker (phase taping, etc). Outlets, switches, device boxes, cable, clamps, breakers - all of these devices have clear ...
  • 1,382
25 votes

Dimmer without neutral?

Not junk bought mail order Noting that the seller is not Amazon. You're dealing with the ugly side of the platform, which is essentially eBay. It's populated by cheap junk from Alibaba. A quick ...
20 votes

Can a 12 gauge wire be clamped onto a light switch using the side screw?

Using the hole(s) in the back is called a "back stab", and, while technically code-legal, they're frowned upon because they can come loose and cause arcing and, if left alone long enough, ...
  • 32.4k
18 votes

Why do LED Lights Flicker on Low Dimmer Setting

LEDs on AC Power Don't Like to be Dimmed. Period. (LEDs on DC can actually be dimmed quite easily - just look at an older battery powered LED device (like handheld computer games from the 1980s) and ...
15 votes
Accepted

Why do LED Lights Flicker on Low Dimmer Setting

The specifications of the LED lights you have say they will dim down to 10% without any flicker or buzzing. Some lights don't go down that far, and some will go even further. Based on the manual for ...
  • 26.8k
14 votes
Accepted

Can someone explain how this makes sense electrically?

However, if I only turn off the lights breaker, and go into the switch panel with my voltmeter, I am still detecting 100V AC across the switch (with it off), even though the lights stay off when I ...
  • 3,547
12 votes

Incorrect voltage at light sockets

In residential interior wiring, voltage irregularities generally are only a concern when over-voltages are seen and not under-voltages. Incidentally however, when there is an under-voltage, there is ...
  • 4,775
12 votes

Techniques to wrap the innards of electrical switches and outlets with electrical tape?

If you are going to do it you go 3-4 times around the outlet so it covers the metal and doesn't slip off. Also do not use the cheapo stuff that comes in at $2 for 5 rolls. This shouldn't be a ...
  • 46.4k
10 votes

What should I do to increase the dimming range of LED bulbs?

I'm in same boat. When I redid the house I'm in, I installed as much LED lighting as I could and the rest is halogen. What I've learned is, dimming range is based completely on the driver in the LED ...
  • 4,366
10 votes
Accepted

Incorrect voltage at light sockets

It's a floating neutral. But it's only the one circuit. Find, re-strip, re-splice, and tighten down all of that circuit's neutral connections. If it goes directly through an outlet, pigtail it.
  • 12.9k
10 votes

Can a 12 gauge wire be clamped onto a light switch using the side screw?

Yes, I see several problems. Wire just stuck under a screw, and not using a proper shepherd's hook with a more than 180 degree bend (i.e. squeezing it together after forming it. Watch a Youtube ...
9 votes
Accepted

Dimmer switches have no ground wire

Add some ground pigtails Take the existing bundle of bare (ground) wires, and add a couple pigtails of bare or green wire to the bundle, making sure the bundle is joined properly using a wirenut or ...
9 votes
Accepted

Changing Out a "Vintage" Dimmer Switch

You have a "single-pole" arrangement, i.e. one switch controlling the load (the light). You simply need to turn off the circuit breaker controlling this circuit, remove the two wires from your ...
  • 33.6k
9 votes
Accepted

Can I connect the neutral wire ends via a single switch terminal (without a pigtail)?

"Never" is a bit strong. This is not a plain "screw terminal" where that would be true. This is a "screw and clamp" and appears to be designed to correctly hold 2 wires, ...
  • 145k
8 votes

Electrician connected LED dimmer to halogen bulbs, worried about safety

From the link you posted: The dimmer is rated for up to 210W of halogens with or without transformer. So if you have 6x 20W 12V halogen bulbs, total 120W, it's okay. You should check the power on the ...
  • 7,548
7 votes

What should I do to increase the dimming range of LED bulbs?

The LED is the most dimming-friendly light source ever made. The problem is that most people are using screw-in "incandescent replacement" LED modules, with obsolete dimming schemes** intended for ...
7 votes

Why are my some of my LED lights flickering?

Simply put, you have the wrong type of switch for the bulbs you have installed. Most (not in every scenerio) LED bulbs require you to install an ELV type dimmer. What you have installed is a standard ...
  • 206
7 votes

Incorrect voltage at light sockets

Everything you are saying depends on where the electrician checked the voltages. Dimmers will affect the voltages on the load side. So did the electrician check for voltage drop across the dimmers ...
7 votes

How can I wire 3 Lutron Caseta dimmer switches in bathroom?

We gotta do something about that mess There's no way to avoid the fact that this many wires will be a huge mess in this box. It's already a huge mess and efforts were made to keep it neat. Your ...
7 votes

Can someone explain how this makes sense electrically?

Rundown in layman's terms: Light switch to outlet. You will see a lot of these in older homes. By code for a long time in a lot of areas you had to be able to turn on a light from a switch accessible ...
  • 46.4k
6 votes

Can I safely run 595 watts of lights with a 600 watt dimmer switch?

Personally I always go up a size in dimmer if I am that close to the limit. If it is ganged with other dimmers then derating forces you to. Will it work, absolutely. Will it fail sooner at that ...
  • 16.1k
6 votes

Can I safely run 595 watts of lights with a 600 watt dimmer switch?

This depends on the manufacturer's statements. Typically switch devices are rated for their expected normal device load. Wiring heat loss, etc. should be negligible enough to ignore. Here's what one ...
  • 2,669
6 votes

Replace a dimmer switch with a regular light switch

Why would you replace a single pole dimmer with a 3-way switch?? I pity the next person who tries to figure out what the heck is going on with this. Correct replacement would have been - leave the ...
  • 145k
6 votes

Is it okay for an electrical switch to get warm?

Short answer, most dimmers do get warm when in use. If the dimmer does not have a mechanical method of turning completely off. Then there is a good chance that you are still getting some electrical ...
6 votes
Accepted

How can I wire 3 Lutron Caseta dimmer switches in bathroom?

OK, here goes: What you have now The power from the panel seems to come in in the middle of the bottom of the box. That black wire is always hot, and is connected to all of your switches via the ...
  • 8,523
6 votes

Can someone explain how this makes sense electrically?

Switch switching outlets. That's normal enough. Often the outlet(s) switched are far from the switch, because that is where the installer thought you would want to put the light. The installer was ...
6 votes

Changing Out a "Vintage" Dimmer Switch

Based on the instructions and Single Pole installation (i.e., one switch rather than 2 switches), this should be quite simple: Line - Hot This is one of your black wires. Hard to tell from the old ...
6 votes

Why are ground wires sometimes not insulated?

Cost, mostly Whether your grounding conductors are bare, insulated, or not even a wire to begin with depends on what wiring method you are working with. NM, because it's made in large quantities, ...
6 votes
Accepted

How do I replace this very old dimmer switch with a standard switch

Referring to the image below: Carefully tuck these back into the box Carefully tuck these back into the box Connect this to one screw on the new switch Remove the wire nut Bend a hook into the the ...
  • 32.4k

Only top scored, non community-wiki answers of a minimum length are eligible