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Questions tagged [electrical]

Distribution and use of electricity throughout the home. Electrical standards vary greatly worldwide, so you need to provide your location in your question or profile to 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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Required Circuits for Waterfurnace Geothermal Unit and Aux Heater

I am pulling the permit and installing the electrical wiring for my Waterfurnace 7 Series 4-ton Ground Source Heat Pump / Furnace. These are the components: 7 SERIES 700A11 Model 048 (Reference ...
Davek804's user avatar
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Bending radius for NM cable through stud

From what I understand from the NEC, bending radius for an NM cable must be at least 5x the diameter of the cable bundle (“romex”). But how do you calculate this in a real life scenario. Is the ...
Jeff George's user avatar
3 votes
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electrical conduit to panel connection question

I am in process of designing my solar system, but my questions are pure (IMO) electrical ones: My PV panels are connected to microinverters which are connected to J-box. I am planning to connect the ...
user166068's user avatar
3 votes
0 answers
64 views

Does NEC 2023 require conduit mounting hardware to be listed?

I only have the NEC 2020 edition on hand, but from what I'm reading on 358.6 for EMT listing requirements: EMT, factory elbows, and associated fittings shall be listed I think it's safe to assume ...
contrapsych's user avatar
3 votes
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Does an original service disconnect without neutral bonding violate code?

Single family home built in 1987. Question is regarding the as-built: Is it grandfathered and does not be updated? There is no neutral-ground bond in the 100A breaker equipped main service disconnect ...
evolvingpowercat's user avatar
3 votes
1 answer
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Cabling problems to consider at 30m

I have just had a workshop built on the side of the house and will be setting the electrics up. The question I have is based on the distance I have going from my mains inlet (via a Henley block) and ...
Shaun's user avatar
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Trying to right-size a critical loads subpanel

I'm installing solar and would like to set up a critical loads subpanel that is fed by both the solar and my main panel. The microinvters in the kit are Enphase IQ8+. I'd like to run a few circuits ...
RagingRoosevelt's user avatar
3 votes
1 answer
1k views

How many wires can I put in this recessed light junction box?

I’m installing some recessed lights (halo) in my basement, and I’m wondering how many conductors I can put in the attached box (pictured), since this light will be at a 3-way junction. I calculated ...
Michael D's user avatar
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Is it a violation of the Canadian Electrical Code to re-label circuits in my electrical panel?

I have an old house, and some of the labels for the circuit breakers are incorrect or extremely vague. I have mapped out where the breakers actually go. I would like to use a label maker to print ...
hwm's user avatar
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172 views

What should I know before upgrading this electrical switchboard?

I have this very old switchboard, I want to upgrade it to prepare for the following changes: Install of a home battery system Ensure that I can install an induction cooktop in the kitchen As you ...
Anthony Kong's user avatar
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121 views

Generator Connection

I picked up a used 10kva (45a) Generac unit and want to get it connected thru the transfer switch. Just looking for some feedback on how to get it connected. I was going to use 1" schedule 40 ...
andyknas's user avatar
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3 Wire SE Feeder 4 Wire Appliance

I have a 50 amp circuit wired with 6 Gauge AA-8000 Aluminum SE wire from the panel that goes to my oven/microwave combo, and then continues on to my cooktop. Both the oven/microwave combo as well as ...
Richard's user avatar
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USA: What is a code compliant method of running 12/2 through wood ledger board and into outside junction box?

I need to run one circuit of 12/2 from the basement (ranch house) up to the attic and then outside via the ledger board of the roof over my deck. Should I screw a short nipple into the back of the ...
roasthead's user avatar
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Order of operations for getting electrical service turned on in Philadelphia

Let me start by saying I appreciate any information. Hopefully, Philly is not all that different from anywhere else, but Ideally Philadelphia specific info would be preferred. I'm remodeling a ...
mreff555's user avatar
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How do I manage grounding when installing a metal extension on a plastic box?

I've been repairing an outlet that's not supposed to be recessed, but is, so I purchased a box extension from the local hardware store. When I tried to put it in, I realized it interferes with the ...
Yet Another User's user avatar
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212 views

Need help on error code for a solar power inverter

I have a solar array with 2 Sunpower/Sunnyboy inverters model SPR-6000m. One of the inverters has an error that from the manual (see pic) is "Inverter Interference". The indicator lights that blink ...
George Anderson's user avatar
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1k views

Fried switches, light fixtures, or wire?

In an attempt to fix a wiring problem from five years ago, I made a huge error. Here's the scenario: Box 1: Has switch #1 in a four-way set up (it's a 3-way switch) and is where the power comes in. ...
Ellen Jarvinen's user avatar
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0 answers
2k views

Water Heater not getting 240v?

My water heater stopped working a few days ago and I've been trouble shooting it ever since. I found water in the connection receptacle. the leak from the the Air Conditioning unit above it has been ...
Juan Z.'s user avatar
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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 ...
Ericc's user avatar
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When running crawl space conduit, must the conduit be run through the joist via drilled holes, or can they be attached underneath?

I'm wiring my home for 110V and cat6e(48-0V). There is currently no wiring, just an air tight shell with interior studs exposed. There is a crawl space where I would like to run all of the conduit ...
dacracot's user avatar
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Sub panel and ground rod installation: "high differential potential between the ground locations"

We have a dock (fixed-pier) that is about 40 feet from the house, and +100 feet from the main panel. 4-wire (2 hots, 1 grounded neutral, and 1 ground) run to a large junction box at the start of the ...
Alex's user avatar
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3 votes
1 answer
5k views

what could cause my gfci to randomly trip?

I'm in the process of finishing my basement, and am almost done with the electrical rough-in. The whole thing is open studs at this time, so any sort of reconfiguration is easily possible. I have a ...
alt's user avatar
  • 1,817
3 votes
1 answer
537 views

How do I troubleshoot a newly installed non-working outlet?

I recently spent several frustrating hours trying to figure out why an outlet on a new branch circuit would not power a load even though there was proper polarity at the outlet, my non-contact voltage ...
user13781's user avatar
3 votes
2 answers
362 views

How should I connect my new wifi smart switch to this wiring?

My switch controls a ceiling fan/light (with pull chain) combo. I am trying to replace the switch with a Kasa HS200. I pulled the switch out and saw a cluster of wires that don't make sense to me, ...
RoyEP3's user avatar
  • 41
2 votes
0 answers
52 views

Can I Use Square D 60A Non-Fused A/C Disconnect with #14 NM Cable?

I am installing a 15A mini split, and the disconnect I'm using is a 60A non-fused Square D QO200TR. It provides no overcurrent protection and is pretty much just an on/off switch. It's protected ...
Chris's user avatar
  • 103
2 votes
0 answers
44 views

How can I use a common smart switch to control 24v?

This might be a bit of an XY problem and I'm open to alternatives. I have a vacation home with a boiler that powers both heating and DHW with an indirect water heater tank. Everything runs through a ...
Matthew's user avatar
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2 votes
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68 views

Question on Kitchen Switches and Wiring

I stumbled upon a situation while making some mild upgrades to my kitchen. I will try to be as detailed as possible to minimize follow-up questions. I have two switches next to the kitchen sink; one ...
DIY Dad's user avatar
  • 21
2 votes
0 answers
76 views

200A panel upgrade, ready for inspection?

I just completed my service and panel upgrade to 200A, including installation of an emergency disconnect and an EVSE. The old service was 100A, fortunately the meter pan and utility wiring was ready ...
Christian K's user avatar
2 votes
2 answers
139 views

Is conduit needed for extension of wall oven wiring?

I recently bought a GE in-wall oven (JRP20WJWW), but the whip power cable is too short (it was 45 inches, not 49 inches like the last oven). Since the power is on the left side of the oven and my ...
Roger's user avatar
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0 answers
62 views

Mini junction box

Our designer picked out a picture light, but when it showed up the base plate for the picture light is only 1 3/4 x 4.5”. That means if I install it on the smallest box that I can think of, a handy ...
LB426's user avatar
  • 21
2 votes
0 answers
54 views

Can I run a gas pipe in front of my electric meter pedestal?

I want to run gas pipe to my patio for a gas grill. I'll be connecting to the grill with a quick connect hose. I would be starting back by the air conditioner and would like to come as far around the ...
Platinum Goose's user avatar
2 votes
0 answers
84 views

Neutral ground bonding in main service panel

I purchased a property with a 200 amp outdoor main service panel below the power company's meter. I want to use this to run power supply to my mobile home about 30 feet away. I also want to supply a ...
Wanell Drake's user avatar
2 votes
0 answers
57 views

What type of cable clamp should be used with this box?

What type of cable clamp should be used with this box? The diameter of those knockouts is roughly 5/8", which I think makes them 3/8 knockouts - does that sound right? If so, do they make cable ...
tom's user avatar
  • 384
2 votes
1 answer
295 views

What requirements are needed to replace an attic fan control switch?

I have an emerson high speed fan switch in one of our houses. It is just a a knob that controls the fan speed. I would like to replace it with a different color one and one that includes a timer....
DMoore's user avatar
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2 votes
0 answers
76 views

How do I get my grounding up to code? Subpanel is missing grounding connector

I have a bit of a situation with my interior subpanel not being grounded properly. The interior subpanel does not receive a ground wire from the main service panel where it is grounded (to the water ...
Dong Shi's user avatar
2 votes
1 answer
60 views

Rewiring a foyer ceiling lamp

We have a foyer ceiling light / chandelier that accumulates dust like a magnet. I have a haywire idea of changing the existing ceiling box into a outlet; rewiring the lamp to a plug, and using a ...
Bill Bonar's user avatar
2 votes
0 answers
204 views

How should I reconnect my 240v baseboard heater/thermostat wiring?

Everything was working fine, then I tried to install the Mysa baseboard heater v2 thermostats. When I realized that my wiring doesn't seem to support them, I put everything back together, and now of ...
jon's user avatar
  • 21
2 votes
1 answer
266 views

Converting 3-way Switch to Single Pole Smart Switch

(Reposted from a guest account I lost access to somehow) I recently moved into a new home built in the 1970's and am looking to upgrade some no-neutral dumb switches to smart switches. After doing ...
Sandersonerson's user avatar
2 votes
0 answers
113 views

How can I add a neutral to my subpanel?

I have a 60a subpanel on the side of my house for the pool equipment. There are only two conductors and a ground. Originally the only things that were probably connected were the pool pump and heater, ...
Don Caton's user avatar
2 votes
0 answers
113 views

Voltage drops to 5V if I connect a light bulb

I have a standard ceiling light fixture with a fan and three light bulbs connected in parallel. The fan still works, but the light bulbs stopped working. I took it apart and tested with a volt meter ...
Dan R.'s user avatar
  • 199
2 votes
0 answers
65 views

What are my exterior PV disconnect options?

I am trying to decide on exterior PV disconnect details for a small PV array. (in Georgia, US) The array is estimated to produce roughly 23A @240V and will feed a 30A breaker using 10awg wire. The ...
hotbiscuits's user avatar
2 votes
3 answers
326 views

1-phase induction hob connection

G'day! I would like to connect a Bosch induction hob (PVS775FC5E) to a dedicated circuit breaker (25A, 230V with no other load on it) at home (built 1998, Netherlands). According to the hob manual, I ...
Paul's user avatar
  • 21
2 votes
0 answers
176 views

Installing a series of FS140 surge protectors to prevent mini split board burnups

I'm having some issues with my current electrical setup. I had an electrician install a 36k Eaton whole house surge protector about a year ago, and the hvac company installed a gree mini split. Since ...
Anthony Ac's user avatar
2 votes
0 answers
376 views

Lights on One Circuit Breaker Dim and Go Out. Host of Other Issues as Well

Summary (TL;DR) Several lightbulbs in my home supplied by one circuit breaker dim over time and go out in about a year. Right now, the ceiling light in my living room won't turn on at all. It will ...
UnbakedDecimeter's user avatar
2 votes
0 answers
76 views

Add Subpanel? trying to identify what is possible with existing panel (no space left)

I am looking at a small kitchen renovation and would like to understand what it would take to bring everything up to code for the kitchen(NEC2017). My current panel (square D) is original from the mid ...
marcus123's user avatar
2 votes
0 answers
115 views

Can I bring a Romex cable from one side of a ceiling joist to the other (in an unfinished basement)?

I have not found any information and answer on this. My question is, can I bring a Romex cable from one side of a ceiling joist to the other over the joist face? All I can find is related to something ...
divB's user avatar
  • 1,531
2 votes
0 answers
96 views

New Light Switch Fried

I noticed one of my dimmer switches in my kitchen that controls the lights under cabinets stopped working months ago but I never got around to replacing it till now. I replaced it with a brand new ...
Kurtjs86 's user avatar
2 votes
0 answers
118 views

Changing a ceiling light and there seem to be wrong coloured wires

I'm changing a ceiling light and am a bit confused (hence why I'm here!) There are four cables coming out of the ceiling. Two cables with red/black/yellow&green wires, one cable with just red/...
Chris's user avatar
  • 21
2 votes
0 answers
136 views

What's this Switch / Outlet?

Probably more curiosity than necessity but what was this switch? And what might it been used for. I swear I've seen this type before, but cannot remember if I ever knew. Might be helpful to know ...
Josh's user avatar
  • 21
2 votes
1 answer
915 views

How should I connect my new light fixture to four sets of wires?

I took out a light fixture in a bathroom with the intent of installing a new one before and I came across 4 sets of wires. This bathroom light (I think) is connected to an extractor fan and is on the ...
homemadeelectrician's user avatar

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