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For questions about an [electrical-panel] that is fed from another [electrical-panel] instead of being fed directly by a utility service or separately derived service (such as a generator or inverter).

12 votes

Separating Ground and Neutrals in Mainpanel before installing sub panel

The grounds and neutrals do not have to be separated in the main panel if it is, in fact, the main panel. Sometimes there's confusion if you have a main disconnect/breaker outside by the meter. In tha …
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5 votes

GFI outlets tripped after power outage

You might want to think about installing a GFCI breaker in the sub panel that controls the existing GFCI outlets and then replacing the GFCI outlets with regular outlets. In my experience, the GFCI br …
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4 votes

Was this installed to code and is it still to code?

Oh boy!! the guys will have a field day with this. Right off the bat, you're not allowed to double wire a terminal as was done in your first picture. The grounding and neutrals don't have to be separa …
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4 votes
Accepted

How can I extend PVC Conduit already installed?

Is there a reason you want to remove that disconnect? It looks like your feed it #10 and the Romex into the garage is #12. You could just remove the smaller cable and add conduit to you sub panel in t …
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3 votes

How to use a 100 amp sub panel for a 50 amp input

Using a larger sub panel will not be a problem but the breaker must stay a 50 AMP in the main panel. You can utilize the 50 Amp breaker in the hot tub panel as a connection point for the new wire run …
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3 votes

How do I break the ground/neutral bond in this sub panel?

The metal strip is a bonding strip between your neutral bus and your ground bus. You'll notice it isn't connected to your neutral bus which is correct for a sub panel but unfortunately, the grounds ar …
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3 votes

What is the model number for the breaker that fits in my Cutler hammer load center panel?

The part number for the breaker you're searching for is: Eaton/Cutler-Hammer CH115GFI 1 Pole Circuit Breaker. The "CH" is important. ETN makes a "BR" breaker and those will not work in your sub panel. …
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2 votes

Can I add a 100amp breaker to this panel for a subpanel 50 feet away?

If the subpanel is for a EV charger or hot tub that will normally be used late in the evening, you should be OK. …
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2 votes

Connect generator to main panel

If you're only planning on serving only partial load of your house, your transfer switch would be mounted close to your subpanel with the outlet going back outside. …
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2 votes

What does "opposite to neutral" mean when installing a feeder breaker?

My understanding is that connecting the appropriate wire size to a breaker larger than 50 amps will cause that wire to rub/rest on top of the neutral bus which could damage the insulation. You've got …
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1 vote

Installing Outlet for Welder; Possible Dual Use for RV

I appreciate your effort to try and combine outlets and wiring but it's usually pretty hard to do. Your welder will need a 40 Amp breaker, two hots and a ground. Your future RV would probably need at …
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1 vote

Running 240v circuit to detached garage

As far as using the existing feeds to power a sub panel, no you can't. You can't parallel cables that small. The good news is, depending on the size of your conduit, you could pull some THHN in it, af …
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1 vote

Is a sub panel necessary to wire this 10.5kw 43.75amp sauna heater?

Normally you'd need the sub panel if for no other reason than to have a means to disconnect the sauna for maintenance. Since the sauna is in the same room you can go directly to it from the main panel …
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1 vote

1 Volt reading between hot phase of sub panel and enclosure and frame

You're probably trying to read voltages through the paint on the panel. Try taking the reading from a metal connector screwed into a knockout on the panel and to hot. If you don't get a good reading, …
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1 vote

Can I convert a 30A sub-panel to a regular 120 circuit?

That sounds like a good plan. Is there any chance you can replace the #14 AWG with #12 AWG? You might want to add more outlets in the future and if any new outlets added in any unfinished parts would …
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