Questions tagged [electrical-panel]

For questions about panelboards (also known as "electrical panels", "circuit breaker panels", "fuse boxes", "distribution boards", "consumer units", or "load centers"). Questions about individual overcurrent protection devices should use [circuit-breaker].

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2answers
41 views

Which double pull breaker do I need?

I have a 240volt 25 amp ptac unit for heating and cooling my large shed. I ran 10/2 wire to a 30 amp outlet because that is the plug on the end of the unit. What size double pull breaker do I need to ...
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2answers
39 views

3 way switches / multiple buildings / no neutral or ground in conduit

I am installing two 3 way switches to control lights in my shed. I have 3/4" conduit in the ground between the two locations. I DO NOT want to run ground or neutral through the conduit. ...
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55 views

Is it safe to connect 220v and 110v neutral lines together on the same breaker bar?

Saw my electrician split the breaker box into 2 sections. He used one side for 220V with the main switch (ON/OFF) connected to 220 supply (hot), and also connected to the Neutral breaker bar. He ...
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1answer
270 views

Can I swap a quad breaker for two double pole breakers?

So right now I have this eaton 20/20 quad breaker in my GE panel and we're trying to make room for a larger circuit. We identified one area where if we could swap it to a 20/50 we could make room. ...
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1answer
32 views

Two circuits combine into one old ceramic fuse panel

I have a 100 amp service in the basement. In it there are two circuits, numbers 2 (15 amp) and 5 (30 amp) that feed an old fuse box/panel on the first floor. The fuse box has 2 fuses per circuit, ...
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2answers
52 views

Breaker setup for Trane 4 ton heat pump variable speed air handler without heat strips

I have a Trane heat pump 4 ton xr-16 and associated heat pump. The air handler is wired to a double pole (240v) 60 Amp breaker. Since I do not intend to install heat strips (ever - I have a better ...
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3answers
135 views

Why is Electrical Panel Rating based on Amps

if the feed wires into my panel are large enough to support all the loads of all the breakers in my panel... why is the panel rated with a max amp load. I mean... none of the breakers will trip if all ...
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1answer
48 views

After changing service panel one light in the house fluctuates in intensity when the AC runs

I have changed out a service panel from an old obsolete unit to a newer plug on neutral unit. I also installed a whole house surge protector. I did experience a problem in changing out the panel, the ...
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2answers
241 views

Different fuses on dual-line disconnect for AC compressor

Please forgive the novice question... one of the two 10A/250V fuses blew on the disconnect to my AC compressor unit (photo 1). I went to the big box store and they only had 20A and 30A fuses so I got ...
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59 views

Circuit breaker problem

I have a circuit breaker box and when wiring two 120 breakers one will read 0 and the other will jump up to 240. What can be causing the full 240 volts from the pole to go directly into a 120 circuit ...
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1answer
87 views

Should my new service panel be bonded?

I am upgrading an obsolete Sylvania panel located inside the house. There's a main panel outside the garage with the main 150 amp breaker. I have a supplied bonding screw with the new panel. ...
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2answers
54 views

50A/240v outdoor into two 20A/110v and one 10A/110v sockets

I have a 50-amp 240-volt outlet (previously used for clothes dryers), I want to divide it into three 110v sockets, two 20A/110v, one 10A/110v socket, you can let me know  What materials are used? ...
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2answers
469 views

Measuring total service panel amperage

I was reading this article, amps per leg on 220V? , and it was very helpful in understanding how to measure a 220v circuit. My question, based on the answers given there, is how to measure the ...
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1answer
59 views

Wanting to add a ground wire for a sub panel replacement. Would like to use use nearby EMT

Updating electric in an attached shop. There are two sub panels, both fed 240 from the main panel in the house. The one has large aluminum conduit, with the conduit serving as ground. The smaller ...
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1answer
85 views

240 to 120 for bedroom outlets

So I am redoing a very old house that had two central heat and air units. One of the units was discontinued and is no longer in use. there is a 240v breaker next to it. my question is can I put a new ...
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2answers
134 views

I do not have a main breaker in my breaker box

My house was built in the late 1970's. The breaker box does not have a main breaker but it does have a double throw with two 60 amp breakers which kills power to everything in the house except for ...
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1answer
63 views

Is it possible to install electrical meter between main panel and subpanel?

Following up to this question. The fire sprinkler rooms get their electricity from building's end-units. There're subpanels in each room. We are told that main panels in the end-units have a "...
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1answer
46 views

Strange Breaker Behavior with Treadmill Electronics

I have a brand new walking treadmill that triggers circuit breakers when the treadmill electronics are powered on but when the treadmill motor is NOT running. The strange thing is that it triggers ...
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0answers
32 views

What size wire do I need for a 100 amp service from meter base? [duplicate]

My run is 80 feet underground in 2 inch conduit from 200 amp breaker to a 100 amp service panel in a detached garage. What size wire should be used?
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2answers
94 views

Running two cables meant for different loads directly from 200Amp electric meter

I am building a house in a 3rd world country and have run into a dilemma. We are installing a 200Amp meter and were initially planning to run one 4/0 aluminum cable to the main panel in the house. ...
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1answer
2k views

Can I Piggyback 4 15 amp outlets off a 30 amp fuse?

I have what you would call a “mini kitchen” set up in my house for a guest bedroom. Ran all new electrical for it and hooked it up in the outside fuse box. It’s a 20 amp fuse running 4 15 amp duplex ...
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2answers
100 views

After some work in panel, GFI breakers for *other* circuits trip when well pump runs

The equipment Square D Homeline panel and breakers of recent vintage, with plug-on neutral. Most breakers, and all of the problematic ones, are AFCI+GFCI combo. The symptoms There are four breakers in ...
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0answers
70 views

Dish installer damaged the electric panel box

A few years ago (like 8 or 9 years) we had a television dish installer come to our house and install the dish. After using it for a couple of years we got rid of it but obviously left the dish ...
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2answers
57 views

Choosing a feeder cable from solar shed to off-grid cabin

I have questions regarding electrical feeder sizing for an off-grid solar system. I am building a purpose-built shed that will support the solar panels and house all of the equipment such as charge ...
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1answer
78 views

400amp service entrance 200amp transfer switch

My local big box retailer has a decent priced 22kw lp generator/200amp transfer switch deal going right now. I'm considering purchasing it but I'm unsure on the correct way to go about my situation. I ...
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2answers
81 views

How many wires can I fit in 1" schedule 40 PVC conduit?

I have a pool sub-panel with four #6 AWG running in 1" schedule 40 PVC conduit in ground under the pavers. We are planning on adding some solar panels above pool equipment. I was thinking, ...
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1answer
62 views

Is this outside service panel a wet location? What cable type to use?

Situation: outside service panel with a meter and plenty of breaker spaces, mounted on siding surface. The panel does not appear to be moisture-tight, there are no gaskets on the covers and entry for ...
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0answers
56 views

Wire questions for panel, sub-panel and electric vehicle charging

I live in an apartment in a 60-apartment building. Each apartment has a 125 amp sub-panel in it (I'm assuming it's a sub-panel). I have 3 slots open on my panel. I wanted to install a double-pole ...
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1answer
68 views

RTS in fire sprinkler rooms - normally-open or -closed? And its purpose? [closed]

I'm on the Board of Directors of a townhouse association. We have 15 buildings, each with a fire sprinkler room at one end, built into the last unit. Rooms are ~4x3' and house fire alarm equipment. ...
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0answers
51 views

Partial power out when AC is on

Anytime our AC is on we lose power in a few rooms mostly the kitchen. It can be on a few days before it goes out. I’ve had 2 electricians come they both said electric panel looks great , we did ...
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2answers
37 views

What dual function CAFCI+GFCI breaker fits an older Murray Breaker Box?

I have a LC240PC Murray breaker box (probably around year 1995). I found what I believe is the breaker I'm looking for here: https://www.homedepot.com/p/Murray-20-Amp-AFCI-GFCI-Dual-Function-Circuit-...
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0answers
47 views

Grounding Metal Garage with Subpanel

For the subpanel I am installing in my metal garage (concrete floor), I have sunk an eight foot copper-coated rod next to the outside wall and adjacent to the panel which is on the inside of the ...
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1answer
62 views

Can I replace the factory installed common wire on a GFCI circuit breaker?

I purchased a used hot tub and the previous owner decided to cut all the wires in the spa pack instead of simply disconnecting them with a screwdriverver. Therefore, the common wire (pigtail) is now ...
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2answers
53 views

GFCI pigtail in service panel

I'm adding a GFCI circuit breaker in my main service panel. The neutral pigtail from the GFCI breaker is not long enough to reach my neutral/ground bar, unless routed in the space between the service ...
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39 views

120/240 home generator interlock/transfer outlet/adapter setup

So I'm wondering what sort of inlet / adapters I need to accomplish the following. Suppose I own the following generators: Honda EU2200: 2x 120V-15A (Standard home outlets) Honda EU2200 Companion: 1x ...
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1answer
39 views

Sense Energy Monitor In Panel Spacing

Just installed the Sense / Square D Wiser Home energy monitor. The instructions state to leave the energy monitoring box somewhere inside the main panel. My main panel is a bit crowded with ground ...
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0answers
27 views

312.6 interpretation when entering from the back of panel

312.6 lists (A) and (B) tables, for when NOT enterting oposite and entering on opposite wall of the box. How is the entering through the back wall interpretted? Technically it would be "NOT ...
2
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1answer
85 views

Dryer & Stove share breakers in 1972 apt

Question1: Why would one hot from the stove be wired into the dryer breaker and one hot from the dryer be wired into the stove breaker? Each has a separate neutral and both are grounded with their ...
2
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2answers
114 views

Moving 240v disconnect box

I have an outdoor 240v disconnect with 6awg cable (red/white/black/green) running from the main breaker to this disconnect box. There's a 110v GFCI-protected branch circuit that goes to some wall ...
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2answers
812 views

Is it possible to tell from labels if the breakers are AFCI / GFCI in the main panel?

I'm deciding if I should upgrade my main panel, and one of the input I want to understand is how different is this panel from modern code requirement. From the photos below, is it possible to tell if ...
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1answer
40 views

EMT all the way, or start with IMC outside and transition to EMT inside the building?

We are running a subpanel from the outside of the building to the garage. The 2" metalic conduit will begin from the top of a 3R box's raintight hub, run up the building about 8ft, turn right, ...
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1answer
34 views

Spacing between service panel and RV sub panel (both on same outdoor freestanding plywood/post)

What is the distance requirements or recommendations for spacing between the 100 amp service panel with meter to the 100 amp Rv sub panel? These will be mounted on marine plywood supported by 4x4 or ...
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1answer
98 views

Can I Replace This Junction Box with a Subpanel?

In the 1950's, our house was built with a Zinsco main service panel that ultimately served six two-wire (ungrounded) and two grounded (via AC/BX) circuits. In the 1990's, a new service panel was ...
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1answer
55 views

How do you correctly use EMT conduit terminated into a female-threaded raintight hub atop a 3R outdoor panel?

What is an NEC-accepted way of using EMT pipe with this female-threaded hub? (The picture is an Eaton DS200H2 2" Rainproof Hub/Conduit/Plate to be used atop of a Eaton NEMA 3R BRP20B200R.)
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2answers
110 views

What is the trade term for the thing that connects the top of a load center panel to 2" EMT conduit?

What is the trade name for the "adapter" for the top conduit hole that is covered at the top of this picture that would allow you to connect 2" EMT conduit? It needs to be rain tight (...
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1answer
51 views

Main Electric Service Panel - Pull Wire

Have square D service Panel and has QO breaker in it. I am excited to pull wire through service Panel. I have lots of space left for new breaker at the bottom of the panel. In the highlighted picture, ...
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6answers
539 views

Junction box partially behind drywall and partially exposed

Let's say I have a 200 amp breaker panel that is flush mount. I want to wire in an EVSE across the garage using conduit. Somehow I need to make that transition for the conduit from behind the ...
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1answer
45 views

200A 240V Electric Panel Clearance

I am installing an electric panel. NEC 110.26A providing for 30" x 36" x 6'6" is met EXCEPT for the main water supply line which will runs against the wall and underneath it at floor ...
2
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1answer
80 views

why does my main service electrical panel not have a ground? or is it bonded already?

So im in the middle of installing a mini split in my home and i was about to start the wiring but when i opened up my main panel i realized that i dont have any grounds anywhere.So i started doing my ...
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2answers
84 views

What size wire for a 100A sub-panel at 275 feet?

I need to run power from my house out to my 35X70 workshop out back. What I have; a dedicated panel with 150 amp breaker on the side of my house that is currently only powering my well. My workshop is ...

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