Does feeder wire need to be in conduit?
Moderator. Unless you area requires conduit for wiring in dwelling units there is no NEC issue with running a cable as a feeder. It must be a 4 wire cable to the sub panel.
Can you run wires through a panel?
Yes, wiring can pass through a panel without needing to have any electrical connections to it, according to the National Electrical Code (NEC-312.8).
Do feeders have to be larger than service entrance conductors?
The feeder conductors to a dwelling unit shall not be required to have an allowable ampacity rating greater than their service-entrance conductors. The grounded conductor shall be permitted to be smaller than the ungrounded conductors, provided the requirements of 215.2, 220.61, and 230.42 are met.
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.
Does outdoor electrical wire need to be in conduit?
Local codes typically require conduit protection for exterior wiring if the wiring is installed above ground. If you are burying the wiring, most codes allow for underground fed cables, but some will require the use of a conduit. Buried or exposed wiring will need to be listed for its application.
Can you use a panel as a pull box?
As long as there are overcurrent devices in a panel it cannot be used as a junction box. Most AHJ’s will allow you to use wirenuts and another piece of wire to lengthen a conductor – such as an existing neutral that isn’t long enough to reach a now required AFCI.
Can I use the breaker box as a raceway?
A. Yes, cabinets, cutout boxes, and meter socket enclosures can be used as a raceway for conductors that feed through if the conductors do not fill the wiring space at any cross section to more than 40% [312.8], as shown in the Figure.
What is a feed thru panel?
A feed-through has the incoming power connected to the bus bars, and the conductors going to the downstream panel are also connected to the bus bars. In a sub-feed panel, one of its breakers will be used to provide the connections to the downstream panel. The use of that breaker is the difference in the two types.
What size wire do I need for a 200 amp service?
The Short Answer: Like with aluminum, you’ll need a #4/0 copper-clad aluminum wire for a 200 amp service.
How do I know what size feeder wire to use?
Determine the minimum feeder conductor size, before you apply any conductor adjustment and/or correction factors, by adding the two following quantities: 125% of the continuous load [215.2] and 100% of the noncontinuous load.
Which of these wiring methods is not permitted to be used for service entrance conductors?
(8) Electrical metallic tubing must not be installed as the wiring method for service entrance conductors inside a building.
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.
How far can a subpanel be from the main panel?
The right feet would be between 4.5 to 5 feet.
The cable running from your main panel to the subpanel depends on the amperage rating. For instance, for a 30A panel, use a 10 AWG, three-wire conductor.
Can you feed a subpanel 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.
Can a main panel be used as a subpanel?
There’s no problem with having a main breaker in a subpanel. It’s required if your panel is in a separate building and has more than six breakers, but there’s nothing prohibiting it in any other case.
What is a sub feed breaker?
Sub feed breakers are branch breakers mounted opposite the mains end on the end of the bussing. They are used when a branch breaker amp rating is required that is higher than can normally be accommodated on the interior. Sub-feed Breakers can be used on main lugs or main breaker interiors.
How do I add a subpanel to a full breaker box?
Quote from the video:
Quote from Youtube video: You're going to be adding a subpanel always add the largest panel that that is practical to a door if you were thinking that you needed six circuits.
Does a subpanel need to be grounded to the main panel?
Most panels come with a bar joining the two, which is easily removed. Code requires subpanels to have a ground connection that’s independent of the main panel’s.
Can you run a 100 amp sub panel off a 100 amp main panel?
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.
