/r/AskElectricians

Photograph via snooOG

Welcome to /r/AskElectricians.

To get verified, send a photo to the mods that has your certificate/seal/card. In this photo, have a piece of paper with your username and date written on it. Block out all identifying information. Once verified delete the image. If the instructions are not followed exactly, the request will be ignored.

/r/AskElectricians is a sub community of /r/Electricians where any and all users may ask for help regarding DIY projects.


Rules

  • Read the sidebar before posting.

  • PLEASE INCLUDE YOUR LOCATION, including state. We assume you're in the US unless otherwise stated.

  • Don't be a dick, and adhere to the reddiquette.

  • Low quality posts will be removed at the discretion of the mod team. This includes memes.

  • Blatant incorrect information or unsafe advice will result with a ban.

  • DO NOT post any personal information. This includes company names of contractors.

  • No union vs non union debates.

  • No advertising of any kind. Ex. Blogs, YouTube channels, Items for sale.

  • Suggesting the burning scrap wire to remove the insulation will result in a ban.

/r/AskElectricians

90,159 Subscribers

1

Narrow 3 Gang Wall Plate?

Hey all, I’m having a heck of a time finding a plate for these light switches. Any information would help? Thanks!

https://ibb.co/D5hnpDj

1 Comment
2024/05/17
01:08 UTC

1

Adding pvc or metal conduit to Service drop

Hello, basically I bought a house and the Service drop wires have no protection. The sun has been hitting it pretty hard and the old lady that lived here never seemed to worry about it. The plastic from the service drop is rusty and peeling off. Ive been trying to get someone to come give me an estimate but have not been successful. Should I cover it with PVC will this be too crazy? I dont want to touch the wires or cut them just probably call the Electric company and ask them to shut the power off. Is there a certain kind of PVC that I could use without removing the wires or is this something I really have to get a certified electrician to do it? Normally I would have but its so hard to get someone to even come and look at it. Eventually I definitely would like a certified electrician to come and do it professionally but for now is there something I can do? Thank you in advance and sorry if this is an stupid question.

1 Comment
2024/05/17
01:04 UTC

1

When rewinding the coil of a generator can I go off of the resistance or wire length instead of number of turns around the core?

I need to rewind 2 coils that generate power for a motorcycle that runs on AC 6V. I counted the number of turns around the metal core, but it's difficult to keep track of this as I'm also trying to keep the wire tightly wound and neatly spaced.

One coil generates power for the ignition, and that one I know the expected resistance is .58 oms, I can only approximate since my multimeter reads down to tenths. The other coil I only know the number of turns around the core and I still have the original length of wire.

Would using either resistance or going by the length of the original wire be good enough?

My only goal is for it to work without damaging the unobtainable voltage regulator or ignition coil at peak power. The bike was designed to handle large variances in power output from engine speed. I'm using the exact same wire gauge.

2 Comments
2024/05/17
00:18 UTC

1

Aluminum connector question

I’m in the process of replacing my old wall oven. The line in is 8 AWG stranded aluminum wiring. Oven wire is 12 AWG copper (same as the old oven). The old oven was connected using the purple wire nuts. But these aren’t rated for this size wire (at least not any that I can find). Likewise with the alumiconn connectors. So what are my options here, short of replacing the wiring with new copper?

1 Comment
2024/05/17
00:10 UTC

1

Safe to use appliance extension cord for microwave? And new disposal trips breaker. Any help appreciated

Two questions, one post.

we have a built in microwave. The outlet for it is behind a cabinet drawer. Can I use a right angle extension cord that is rated for 15amps for it so the drawer can close? The microwave is rated for 950w. our sink disposal trips our breaker about once every two weeks. We just had our house rewired and new breakers/panel put in. Any ideas on how to fix? Thanks for your help

1 Comment
2024/05/16
23:08 UTC

1

I currently own a duplex and am in the process of doing some renovations including adding new appliances to both units, is a 100AMP electrical service in each unit fine for my situation?

Unit 1: 950 square feet 2b 1 bath

  • central AC

  • Appliances: Fridge, new induction stove, dishwasher, microwave, washer and dryer.

  • Gas heating

  • Other big electronics: 1 tv, 1 treadmill

Unit 2: 950 square feet, 2b 1ba

  • no central AC

  • Gas heating

  • Will be getting same/similar appliances as above

  • Is a rental unit so could possibly be supporting up to 2 people instead of one like the one I live in.

2 Comments
2024/05/16
23:00 UTC

1

Gfci powered switch

I added a switch to a circuit that used to have a non switch light fixture (twisty deal on fixtures itself). Before putting a bulb in the fixture, I tested the functionality. Switch off, no power. Switch on, power. Everything seemed to be working. I put a bulb in the fixture, and now it trips the gfci when turning switch on. Thoughts?

1 Comment
2024/05/16
22:52 UTC

1

Ceiling light doesn't turn on unless the light switch has been "warmed up" in ON position for a while

Hello,

Context:

Recently I've had troubles with the ceiling light in my room - sometimes it just would NOT turn on unless I flickered the switch on and off several dozen times. I replaced the light switch thinking it was a faulty switch, but that did not fix it, so I assume the light itself is the problem.

Later, I realized that I did NOT have to flicker the light switch at all. If the light switch was "on" for a while, then the light would just behave normally, and I could turn it off and on really quick with no problems.

Likewise, when I woke up in the morning, the light didn't work for a while because it was "off" for so long. If I flip the switch "on" for a few minutes (even if the light itself stayed off), all I had to do was flick the switch off and on and the light would instantly come on.

I haven't noticed any real loss of brightness in the light, so I don't think the lightbulb itself is dying.

Questions:

  1. I know I probably need to get a new light, but what exactly is the problem, out of curiosity?

  2. Is it dangerous? Is this something I should get fixed ASAP lest my house burns down?

Thanks!

1 Comment
2024/05/16
22:35 UTC

1

Freezer in truck

Hello, I’ve find a previous on r/electrician from 5 years ago about a guys who wanted to put a freezer in a van and, well, I want to do the same thing but in my truck.

So of the response included putting a 2000 wats inverter and a 120v extension cord.

What I had in mind was to have at least one or two deep cycle batteries and an inverter then plug to the freezer and I could hook up these batteries to the truck battery so they can be recharged. I would hook them by slicing into the 12v charging of the 7 pin trailer plug so it’s easier and doesn’t need relay and fuse or a main switch.

What would you guys recommend? Would my idea work? What should I change/ do ? Thanks a lot

1 Comment
2024/05/16
22:06 UTC

1

First time building my own panel. I have two pumps of FLA 2.75 which will be running one at a time. I will use 2.5 sqmm copper cable with OLR range 2-4 amps. My question is what size and type main 3pole MCB i should use ?

since 3pole mcb will be providing power to both pumps contactors but only one pump will run at a time for which i am using alternating relay. In that case what size should be the breaker and isolator as well ?

1 Comment
2024/05/16
21:59 UTC

1

Anyone know what’s the code for spacing or the proper spacing for running EMT on a shared strut with other trades?

2 Comments
2024/05/16
21:54 UTC

1

Apprenticeship through fathers business

I don't know if this is the place to ask but.. my father owns a small electrician company. My mother manages it and he's the sole worker. I'm trying to apprentice through his company, but we don't know if we can afford to pay workers comp for me. My older brother went through an apprenticeship through my father's business 10 years ago and he was listed as an officer of the business so they didn't have to pay workers comp. Apparently that may not be something you can do now..? I don't know if anyone would know anything about this but feel free to comment if you do. Thanks.

1 Comment
2024/05/16
21:39 UTC

1

Outside GFCI Outlet Install

I would like to install an outside GFCI outlet here in the red circle location of my house. I have access in the basement on other pic. Would it be ok to cut of a 1 gang hole in the 1x9 beam? Or should I only drill a hole for the wire and surface mount the outlet on the outside?

https://preview.redd.it/eigq2y2rtu0d1.jpg?width=1060&format=pjpg&auto=webp&s=125aaa9873c440367a9d9e7a8fa9a94553c91639

https://preview.redd.it/uxbdckrrtu0d1.jpg?width=706&format=pjpg&auto=webp&s=d09b013dc2e48405adc2b5be8f5d231deff2908f

1 Comment
2024/05/16
21:13 UTC

1

Why are the lights in my building making this noise?

The lights in my building have started making these weird noises—it gets louder and quieter throughout the day, but it is persistent and super loud, and seems to reverberate through the walls.

What would cause this noise?

https://imgur.com/a/ig5PuFN

6 Comments
2024/05/16
20:59 UTC

1

What is the minimum size generator to run a regular full-size refrigerator, and probably a couple of fans. Looking for an inverter generator that is quiet quiet.

7 Comments
2024/05/16
20:58 UTC

Back To Top