Questions tagged [subpanel]

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).

33 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2
votes
0answers
54 views

breakers on main panel trip after adding a sub panel

I've just added a subpannel 100amp with Gauge 6 wires to the main panel so that the new subpanel will feed a sauna 25amp + a hot tub 30amp. The sauna is already connected with gauge 8 wires 240V, it ...
2
votes
2answers
135 views

Can I feed a sub panel off my 200A service box? Or would I need to run wire from the inside breaker box?

Can I add a sub panel feed off my 200A service box? If so what are the requirements? Or would I need to run it from the main house breaker inside the house and wire from there? I currently have a ...
2
votes
1answer
146 views

What size sub-panel and wire do I need for my three-season room?

I have a 15x22 room that is roughly 50' from the main panel, that I am converting from a 3 season room, into a conditioned space (heating and cooling, enclosed with windows and doors, etc.). ...
1
vote
1answer
50 views

backup electrical feed to main panel from inverter's GFCI outlet without ground?

I have rigged a 1000watt/120vac inverter to my EV, to use for backup electrical power during short grid outages (the main "traction" battery has 40kwh and the DC-to-DC converter is known to be able to ...
1
vote
1answer
82 views

30Amp Sub Panel for EV Charger

Need 240V 20AMPs in detached garage for 16 AMP Level 2 EV Charger (Chevy Spark) at my MIL's home. 1200 sqft House, has a 100 AMP Panel. Furnace, Dryer, and Stove are Gas. All circuits are 20AMPs, and ...
1
vote
2answers
97 views

Where Should the Sub Panel Go? What Size Wire?

Been lurking for awhile getting ready to install a 60 amp sub-panel for my back yard. I have everything I need figured out except for three important items as I get conflicting stories depending on ...
1
vote
1answer
89 views

Wiring a new shop advice

I am having a new shop built on Friday.The shop is located 250 feet from my power meter. For a 240 volt 100 amp service in the shop, the online calculator says I need 2/0 AWG Aluminum or 1AWG copper....
1
vote
2answers
140 views

Is a 60 amp breaker adequate for a 220v sub-panel to my garage?

150 panel in house. I want to run a 220 (sub-panel) feed to garage 25 feet away for 10,000 watt electric heater. There's room in the 150 panel. Would 60 amp breaker in the garage meet the 1.25 safety ...
1
vote
1answer
109 views

Basement Sub-panel Breaker Size

I am confused about small-appliance branch circuit for service load calculation. I am trying to size my breaker for a sub-panel in my basement from my main 200A panel. I will have a main room, wet ...
1
vote
0answers
58 views

Service needed to add a tankless water heater

I am currently building a detached 250 sq feet studio in my backyard. The studio will have a tiny bathroom with a tankless water heater, a baseboard heater, and a few lights, a mini split (ac), of ...
1
vote
0answers
112 views

Questions about installing an electrical subpanel (re: wire size, etc)

My current electrical panel is filled and I'm going to have a pool installed this year so I need to install a subpanel. (my current box doesn't support tandem breakers, etc) Because I only need more ...
1
vote
0answers
49 views

what size wire do i need to ground sub panels together?

What size wire do I need to properly ground 2 sub panels together in Washington state? I have 2awg running panel to panel but don't know what size ground wire to install
1
vote
1answer
242 views

How to handle unattached ground wires in boiler fusebox/control panel (sub-panel?)?

I don't have enough of an understanding of HVAC to know if the pictured boiler fuse box is considered a control panel or a sub-panel - but some wiring issues there lead me to needing to understand ...
1
vote
0answers
873 views

Breaker to outdoor Sub panel keep tripping

Need help with my outdoor kitchen fridge. A 20 amp fuse at the main box goes takes a 10/2 w/ground wire to a sub panel. The sub panel has two 15 amp breakers circuit one goes to a storage shed via ...
1
vote
0answers
764 views

Feeder type and size for 60 amp. subpanel

Is it possible/recommended to use E18679 (UL) ROMEX SIMPull AWG 6 CU 3 with AWG 10 ground Type NM-B 600 volts as feeder from a 60 amp breaker to install a subpanel? Subpanel will be located in ...
1
vote
0answers
75 views

Sub Panel Remote Control?

I would like to know if it is possible to have a relay control power to a sub panel? I am thinking of wiring a cottage with most of the lights in one sub panel. I would like to be able to power this ...
1
vote
0answers
196 views

Sub panel cable feed code

The inspector failed the sub panel box location because it only had 6 feet clearance and not 6.5. The electricians came and moved the sub panel box, but they did not run a new feed cable. They put a ...
1
vote
0answers
42k views

What size wire do I need for a 100amp underground 300 ft run?

I want to put in a 100amp subpanel in my garage. The run will be underground and 300ft long. I have a Siemens panel with breakers rated at 60/75 deg C. What is the proper wire size I need? I was ...
1
vote
2answers
633 views

Wiring 100 Amp subpanel

I know this subject seems to be debated to no end but I have a few questions/comments. My main service panel is in my attached garage and I want to add a 100 amp subpanel about a foot or 2 to the ...
0
votes
0answers
29 views

What wire size is needed?

I need to run 110 volts AC 300' to a subpanel. What size copper wire do I need? Wire will be run in conduit underground.
0
votes
0answers
34 views

square d q/o sub panel

I had one breaker running kitchen and garage. I used skill saw and it blew breaker. I bought 2 new 20 amp breakers and separated lines. the garage on right side and kitchen on left. everything on ...
0
votes
0answers
51 views

Putting a sub panel for a home office/bedroom?

Recently, our neighborhood had a power outage for a few days. Causing my office/bedroom to lose power completely which was a bit of an inconvenience. Out of curiosity, I began googling about ...
0
votes
2answers
104 views

3 wire existing feed, not connected to main panel. Do I bond ground and neutral

I have a detached garage that has a 3 wire feed, powered from a separate 100amp disconnect from the main panel. Originally the old box had the ground and neutrals together on the same bar. I ...
0
votes
0answers
22 views

Need help to Determine the Size a Subpanel

The subpanel will have ac/spa/220v plug. 30+50+40=120 amp Want would be the main breaker for amperage? 100 or 125 amperage? I know the panel will be a 125 amp but I don't want a too big panel on the ...
0
votes
0answers
147 views

What size wire for a 60A sub-panel at 185 feet?

I have a 200 amp panel in my house. I want to run electric 185 feet buried and put in 60 amp sub panel in garage. I'm hoping this will give me 4 15 amp breakers in garage. What size wire do I need?
0
votes
0answers
26 views

Pool heater hook up

The main panel in my house is 200 amp. I installed a 100 amp subpanel in my garage. Can I put a double-pole 50 amp breaker in my 100 amp subpanel for a pool heater?
0
votes
0answers
62 views

50 amp breaker for Range on a 60 amp sub panel

I have s 60 amp sub panel that powers only 3 20 amp circuits. Can I add a 50 amp breaker for my range?
0
votes
0answers
29 views

Installing a 50 amp sub panel

Can I install a 50amp sub panel to a detached garage if I only have 3 wires running? Just bought the house and wire is already there.
0
votes
0answers
39 views

GFCI Breaker Serving GFCI Receptacles Tripping in Extreme Fog and Cold

Lately, I have had an issue where sometime during the night the main GFCI breaker would trip. The only thing different on the nights that this happened was that one of the nights was (1) extremely ...
0
votes
0answers
38 views

60A sub panel located 220' from source…in conduit..what guage al wire to meet ONT Elec code?

I want to wire a 60A subpanel that is 220' from the main source. The wire will be AL and run through a buried conduit.... Must meet Ontario Electrical code
0
votes
1answer
1k views

What type of wire and load center for subpanel in detached pole garage?

I am installing a 60 AMP subpanel in a detached pole garage 150 feet from the house. Garage subpanel will be supplied from an existing 100 AMP subpanel in the basement of the house (running from the ...
0
votes
0answers
979 views

What size wire should i use for a 125 foot underground run to a garden shed

I want to run a buried 125' line to a 30A subpanel in my garden shed. I will only be running hand tools and lighting. Was planning on using 12/3 from the house to the subpanel. Does that sound like ...
0
votes
1answer
508 views

Adding electrical service to detached garage

Please let me know if this sounds correct- Sub panel fed from 80amp breaker in main building 200amp load center. Roughly 75' of 1" PVC conduit from existing load panel, under existing timber deck, ...