Questions tagged [electrical]

Distribution and use of electricity throughout the home. Electrical standards vary greatly worldwide, so providing your location in your question or your profile helps ensure you get answers that are relevant to you. Posting photographs of wiring junctions or drawing a wiring diagram and posting it is also highly recommended.

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13 views

Power supply of VCR [on hold]

My VCR was not working, I wanted to restore it. I don't have enough knowledge about circuit components. Can you tell what it that white round colour thing in the picture?
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25 views

Can fuses be intermittent?

While I was at work today I had a power outage in one of my rooms. I know because I had multiple computers in there that were off for several minutes(fully booted back up in 14 minutes), but the ...
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1answer
31 views

Is it more efficient to turn my AC unit off periodically vs. keeping it on only while in the room?

I have an AC unit in my bedroom + workspace. I use its "auto" fan speed and "energy saver" mode (rather than "cool" or "fan only"). I'm wondering, which strategy is more energy efficient and by ...
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398 views

Does unblocking power bar outlets through short extension cords increase fire risk?

Power supply units will often be greedy and block access to adjacent outlets in a power bar. A simple solution is to use 1/2 ft or 1 ft (15cm, 30cm) power extension cords to keep all outlets in a ...
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1answer
60 views

Induction cooktop connection

I have a new induction cooktop Bosch PIF645BB1E rated at 7.4 kW. According to its documentation it should be connected with 5 wires (2 phases, 2 neutrals and 1 PE wire). From a former flat renter I ...
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30 views

Minimum distance from receptacle terminal to conduit connector

Is there a minimum distance required from a receptacle terminal to a conduit connector? Surely this is defined in the NEC somewhere right?
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3answers
26 views

Rafter above location for light, exterior light box choice

Retrofitting from knob and tube. One location has a rafter directly above where the light should go (and currently is). The ceiling is 3/4 in beadboard. Can I use a 4 inch pan box cut in to the ...
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2answers
697 views

Can I use #10 wire for a 30A, 240V pump circuit?

I have 2 30amp breakers connected together. I believe this gives me 220v. I plan to connect this circuit to a 220v irrigation pump. It looks like the original wire from the main circuit is 12 gauge. ...
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2answers
67 views

I opened a light switch and found an unterminated wire in the junction box. Is this unsafe?

I switched of the main circuit breaker to the house and opened up a light switch to see if I had a neutral wire, so I could buy a smart switch. But when I took off the plate I found what appears to ...
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57 views

Is it safe to touch wire testing at low to medium voltage on a 14 or 12 gauge wire, 15 or 20 amp (current) circuit?

Title is the question. I'm using a Klein NCVT- 3 Voltage tester with a bar graph indicating voltage, and don't see anything in the instructions, and haven't ran across anything in a textbook or ...
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1answer
37 views

In conduit with 75C wire, can I use #14 wire for 20A circuits?

I note that with 8 AWG wire... in NM-B (Romex) cable I can only get 40A: I am required to pull from the 60 degree C column of Table 310.15(B)(16). However, in conduit, with 75C wire (THHN) and ...
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80 views

Can i use step-up transformer to transform 110v to 220v for my window AC?

Most receptacles in my house only provides 110V. I would like to install a 2500 W 25000 BTU window AC that requires 230V. It draws a current of up to 15 A. Can I plug a step-up transformer to the ...
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52 views

GFI Outlets and GFI Breakers

Have a dedicated circuit for our freezer which has a GFI circuit breaker feeding a GFI outlet in our laundry room where the freezer is. Unfortunately, the GFI Breaker trips with the slightest power ...
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3answers
80 views

10/3 Aluminum 20A with multiple electrical circuits? What is correct wiring?

I have a house built in 1971 (EQ Load Center - 200 amp service panel) that is all aluminum wiring and I remodeling the kitchen. The existing wiring is technically working but questionable. We have ...
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1answer
117 views

Why does my garage still have power when the house main is shut off?

I still have power in my garage.. I cant figure out why I still have power on. It's a new garage built on to the house.
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57 views

Running Electrical cable through Loft/Attic

So we have had a car charger installed outside the garage, which is currently powered by standard twin and earth. is it ok to run an armoured cable from the meter, through the loft, (going up the ...
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84 views

Subpanel Vs. 220v-240v NEMA 14-50

Thank you in advance for your advice! My project is to install a 220v-240v NEMA 14-50 outlet at my house’ s attached garage, which is nearly 65 ft/one way, from the house’ s main electrical panel / ...
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23 views

power to outlets and switches [duplicate]

thank you for responses on my earlier question some background on my problem I had to completely disconnect my sub panel to do some work when I wired it back up and with breakers in the sub panel in ...
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34 views

Extend/splice 12/2 romex along concrete finished wall

I would like to extend some wiring for a counter outlet that is running behind a refrigerator, which currently encased in a metal "cable concealer" raceway. Note: wiring is in a raceway because most ...
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3answers
953 views

Connect neutrals together in 3-gang box (load side) with 3x 3-way switches?

I have 2x 3-gang boxes, each with 3x 3-way switches in each box. All are on the same 15A breaker. I have wired them together and I'm just connecting the switches now. I have: -----...
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5k views

I do not have power to all my breakers

I exchanged my double pole 40 ampere breaker that supplied my sub panel for my garage with a single pole 40 ampere and now out of my six breakers in the sub panel only 1,3, and 5 have power. How do I ...
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1answer
27 views

Wire Melts at Connector to Broil Element on Electric Oven

I have a Hotpoint RK38T electric oven with a 3410 W broil element and 16 awg 125 C wire connection to one side of the element. The wire to the broil element melted at the connector. See image of ...
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2answers
54 views

Is there any difference in the type of wiring in common household?

I know this question is way, way below the norm for this type of place, but I just want a straight answer and not something that I have to try to glean from other places answering a different question....
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1answer
30 views

'plug-in sequence'

Good Day, I am thinking the opposite from this last entry (JM) but have no background in electrical theory. I have a lot of appliances I plug/unplug w/a little box in-line (I assume "transformer"). ...
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1answer
56 views

Grounding for Outdoor Outlet

I have an outdoor outlet about 60' from my house. It is properly wired using an underground cable with ground. It is in a plastic box with plastic conduit protecting the stub-up. Recently a tree ...
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1answer
93 views

circuit box problem

Sparks flew out of my breaker box, probably due to faulty wiring. In an effort to troubleshoot, I removed all the breaker and labeled them. Got a wire tracer and tried to trace the wires to see ...
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28 views

How do I compute how much electric service to provision?

Generic question here. I won't self-answer. Suppose I am adding significant new loads to an existing house - say, a 50A hot tub and a 50A RV receptacle. Those are big loads for a modest gas home. ...
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1answer
38 views

Light switch wiring rats nest

Fixing some switches and adding Wifi switches to a home I just bought. I pulled out some old style switches from this box and added 2 WiFi switches plus a 3 way paddle on the right. I believe a 3-...
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3answers
39 views

Solar Power System Circuit Breaker and fuse Amps

So the question is kinda part 2 of my question about the DC Output Today I went to Hellweg (It's like an Electronics shop in Germany/Europe). To buy a Circuit Breaker or Fuse (idk what I am looking ...
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28 views

Use of multi outlet adapter with dehumidifier

Is it safe to use a multi outlet adapter with dehumidifier? And if not, why? Have only one outlet near the dehumidifier and won’t use extension cord as not recommended. Thank you.
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2answers
65 views

How should I secure NM wire that someone ran outside of two studs?

This is behind a closet that we’re going to Sheetrock and finish. The wire runs through a hole in the corner, around two studs and into another corner. I’m thinking of notching the studs 1/4” so ...
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33 views

Parallel neutral paths conundrum with 1 generator + multiple ATSes

Let us assume for discussion purposes that we have a duplex with separately metered units and no grounds/commons-area loads. Let us also assume that we want a permanent standby generator with ATS for ...
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1answer
30 views

Main Lug Load Center

Can I install a 225 amp main lug load center "downstream" from my 100 amp external cutoff? I run all gas appliances, I'm looking into gas air conditioning as well... I only want the big panel for ...
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57 views

Problem with light

I been having a problem with my light , my air conditioning from my room is on and the one from the living room they fight to get energy theres a moment where one gets more and the oner one dosent ...
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1answer
60 views

Can I wire both a 50 amp hot tub and 50 amp RV plug in the same box?

I have two projects in the works, installing a hot tub and building an RV pad. Both the RV and hot tub run on 50 amps and 220 volts. RV's plug-in but hot tubs are wired directly. Is there a single ...
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60 views

What circuit components should I use for a vacuum?

So I'm constructing a dust extractor system for my workshop, and I need to figure out a circuit. I have 3D Printed a connector that connects two PVC Pipes, and has a hole for a wooden slab. I can ...
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2answers
69 views

Grounding my dishwasher

The dishwasher's junction box needs a ground, and I currently only have white and black. Can the flexible conduit be used as a ground? If I can securely rejoin the flex to the solid conduit (using ...
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1answer
217 views

GFCI - should my neutral and ground have continuity?

I have a thing I'm doing.. I won't go into detail, but I have a thing that is a yellow solid core copper cable with a hot, neutral and bare ground. one end is connected to a plug I wired (I'm using ...
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1answer
71 views

Power tripping out

I live in Spain, my home's electrics are just terrible. I'm waiting for an electrician to look at it and quote me for sorting it all out. Things are frequently tripping out, I've been trying to spot ...
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2answers
101 views

Mysterious ground wire

So I’m trying to replace my old light switches with some nice new dimmers but I have a problem. As you can see in the picture, all the ground wires run up and out of the box to an unknown location. ...
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4answers
97 views

Extend a wire that i had to splice to sister my floor joist is too short now

I had a rotten floor joist on the ground floor , i fixed it by sistering a brand new floor joist right beside it in the basement But when i wanted to instal the beam , i had to cut the wire running ...
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1answer
30 views

Lights stopped working

I have 2 flush mount led lights in my kitchen....rental. Last night, they stopped turning on. When I went up to poke around and touched them, they lit but very very dim. If I touch the mounting screw ...
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1answer
66 views

Tap into an Electrical Wire Under a Raised Cottage

I have a raised cottage that is exposed underneath. There is an nmd90/Romex/indoor-rated electrical wire running along one of the joists below it. I realize that isn't up to current code, but it isn'...
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3answers
1k views

How to wire 3 hots / 3 neutrals into this new TR outlet with 2 screws?

I'm redoing some of the outlets in our house, as they are pretty loose. Some of these have been really easy, but I came across one today where there were 3 hots and 3 neutrals. All 3 were going into ...
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40 views

200Amp Panel upgrade, Flush panel to Surface mount

I'm looking to get my house panel upgraded from a 100 amp FPE firestarter panel to new Square D Panel. The panel I want to use is surface mount and the one built into the house in the 1970's is flush ...
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73 views

Power tripped whilst drilling a wall. Restores ok, but is it safe?

Extremely stupid of me I know, but I was hanging a wall clock in the kitchen in a hurry using a corded drill plugged into a socket directly below the clock. I was drilling slowly through the brick ...
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45 views

How do I connect surface wireway to a breaker box?

I am running Legrand/Wiremold 4000 series for a garage shop. The instructions for the panel connector (4086A) consist of a tiny picture that implies all I need to do is cut a large square hole in my ...
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1answer
81 views

Why does a breaker buzz when you turn it on?

I've had an issue recently where turning on the light in one room occasionally turns off the power in that breaker. The breaker doesn't actually appear to be tripped, but resetting the breaker will ...
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23 views

Connection for a 2 switch ceiling fan additional question [duplicate]

So I separate the 2 white wires and label the hot one black? How do I determine the hot white wire without a tester? Thank you guys for your help!
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63 views

Did the handyman screw up or is there something wrong with my AC unit?

My landlord recently hired someone to install a common wire from my Goodman AC unit on the roof down to where the thermostat is. The current thermostat works fine, but is non programmable and battery ...