Sub feed lugs are a replacement set of lugs used in place of the normal main lugs of a panelboard. They allow the installer to subfeed to another panel or device. Sub-Feed Lugs can be used on main lugs interiors. Feed through lugs are a second set of lugs mounted opposite the mains end on the end of the bussing.
How do you install sub feed lugs?
Quote from Youtube video: One of the screws will be shorter than the other ones this screw will be used to attach the neutral lug to the panel board remember the lug doesn't matter but the screw does.
Does a sub panel need a feeder breaker?
The subpanel may be equipped with a main breaker to allow for power interruption without having to go back to the main panel, but it is not required to have a main shutoff circuit breaker, since the feeder breaker back in the main panel serves this function.
Can a main lug panel be used as a sub panel?
The main circuit breaker provides a level of overcurrent protection for all branch circuits, as well as a single disconnect means for all loads being fed by the load center. Main lug only load centers are typically applied downstream of a main circuit breaker panel and are often referred to as a sub panel.
Can you add lugs to a breaker box?
Yes, that’s fine. If the panel manufacturer supports double-lugs for the output lugs you could use those. Otherwise, use 3-port Polaris splices to fork the wires. Note this all needs to happen inside the enclosure, and the enclosure needs to be big enough.
What is the difference between sub feed lugs and feed through?
Sub feed lugs are a replacement set of lugs used in place of the normal main lugs of a panelboard. They allow the installer to subfeed to another panel or device. Sub-Feed Lugs can be used on main lugs interiors. Feed through lugs are a second set of lugs mounted opposite the mains end on the end of the bussing.
How do feed through lugs work?
The feed through lugs are located at the bottom of the first load center, and the second one is powered from there. When the main lugs above are supplied with voltage, the feed through lugs below are automatically energized because they connect to the same bus bars.
Where should feeder wires to a subpanel be connected?
Quote from the video:
Quote from Youtube video: The wire. Into the sub panel from the main panel. So we'll be running our six gauge ground wire. And our feeder wire next this is three gauge like I mentioned earlier anything six gauge or smaller.
Can you feed a 100 amp sub panel with a 60 amp breaker?
You can feed a 100 Amp panel with a 60 Amp breaker. Keep in mind that the sub panel needs to be rated above the breaker size.
Can a subpanel feed another sub panel?
Answer: Yes. The main electrical service panel is where branch circuits originate.
Does a sub panel need a ground rod?
Yes, any sub panel outside of the main building requires it’s own ground rod and a ground wire back to the main building.
How do you put lugs on panels?
Quote from the video:
Quote from Youtube video: Prepare the screws and the phase connectors. Secure the a phase connector to the a phase panel board bus with 10 – 32 by 7/8 inch thread forming screws repeat for B and C phases.
Can you wire a subpanel with 3 wires?
Another way to wire a subpanel was with a three-wire feed; two hots and a neutral, with grounds and neutrals connected together at the subpanel. In this case, the grounds and neutrals have to be connected together.
How do you feed a subpanel from the main panel?
Quote from the video:
Quote from Youtube video: Goes into the panel. And on to the ground burn. Everything is connected ready to heat this up at the main panel we've completed the other panel. We've completed this panel.
What are lugs in electrical panel?
Quote from the video:
Quote from Youtube video: Anywhere that's past the first point of disconnect. And we're gonna talk about the main breaker panel.
What is sub feed breaker?
In panelboards, a subfeed breaker is a lug in/lug out branch breaker mounted, not on the panelboard interior bus bars, but at the opposite end of the main and cabled to the interior. They are typically of larger amperage than branch breakers mounted on the panel bus and they increas the overall panel height.
How many wires can be in a subpanel?
A subpanel requires two hot wires connected to a 240-volt double-pole breaker in the main panel. It also needs a neutral wire and a ground wire. The cable used for this run is known as a “three-wire cable with ground.” The two hot wires, called feeder wires, will provide all of the power to the subpanel.
Can I feed a panel through a breaker?
If the wire size from the sub panel is the size that the main breaker in the panel being fed from you don’t have to have the breaker but this means if you have a 200 a main breaker in that panel the wire ampacity will need to be that large.
How many subpanels can I have?
Even though there is no limit on the number of subpanels that you can add to a circuit, it shouldn’t exceed 160 amps when you’re using a 200 amp main panel. Always follow this guide to install subpanels effectively.
How big of a subpanel can I install off a 100 amp service?
Let me try and answer some of your questions. First the panels you are looking at that are rated 100A simply means you can use them for any application up to 100A. You can for example add a 60A breaker to your existing panel and protect the new subpanel with a 100A rating.
Can I feed a 200 amp sub panel with a 100 amp breaker?
Yes. There is no real NEC provision that would prohibit this so it’s allowed. The 200 amp CB is simply being used as a disconnect if the feeder is protected by a 100 amp OCPD at it’s origin.
