Junkman Well-known member. I have a amp service in the cellar of the home. How many sub panels can I run off of this main panel? I am thinking 60 amp to a upstairs, amp on the side of the main since the main is already full, and a amp out to the garage. Last question The reason for this is because when I upgraded the original service by adding a generator disconnect, the inspector said that the original main panel now becomes a sub panel, and that I needed to separate the grounds from the neutrals.
I did this at the time. You can have as many "sub panels" as you want to install as long as they are connected correctly. The key issue to focus on is the utility service must be sized to handle the anticipated load. The service size and limiting factor is the overcurrent device ampacity on the service entrance equipment which in your case appears to be ampere. You can have a million "sub panels" with a hundred-million ampere connected load all fed from your ampere rated service as long as the total demand of all the panelboards combined does not exceed amperes.
Joined Nov 11, Messages 13, This brings up something I have been thinking about. I like to use a lot of low draw circuits. You can not jump off the existing service disconnect and extend the service entrance conductors to an additional panelboard. Their dream is that this local breaker will trip first, and save them a walk. That trick never works!
But I'll come back to that. Boom 2 spaces gone that the person did not expect to lose. Just for one each V and V utility sockets, the person now has 1 space left. They wanted a hot tub, well that takes 2 spaces, and they're out of space. Can't use double-stuffs because NEC pretty much outlaws them. That person is painted into a corner and must now install an 8-space, and will need to go space for the next thing. How many times are you going to replace panels? That's a takeout pizza.
Spaces are cheap. Redoing work is expensive. Everytime you change a panel you risk damaging wire - and then you're really in trouble. If it was hundreds of dollars of wire, sure. But c'mon. A pizza? Skip it and enjoy an installation with expansion room. You'll thank yourself later. If I were paying for the panels - and I do pay for most of the panels I install - I would use a space main-lug at the remote sites and a space at the shop. Space not circuit The Al is a perfectly fine wire size for the runs you have "60A".
Feel free to breaker those at 80A at the main, since that is allowed on of any length unless the length carries it into Canada, then no. For the A run, you can't breaker the at A, I'm sorry. You need to use at least 1 aluminum. But let's say you actually need 80A, so you breaker for A.
Never calculate voltage drop on breaker trip. So that means we're calculating your workshop run at 80A. In a 6-space panel, "main breakers" are placed in regular breaker positions and backfeed.
Suddenly 2 of 6 spaces are gone - whoops! However, you can use that same backfeeding trick hopefully with a larger panel, say a space -- fit a plain common breaker at the top left, label it "Main Disconnect", apply a Tie-Down Kit, and feed the panel there. This means you're using the same kind of branch circuit breaker that is supplying the panel at the other end. You can help that even further by making the local breaker smaller.
Say you use an 80A feed breaker at the main panel, and a 60A or even 30A "main breaker" in the sub. It's a "nanny breaker", sure, but it's helping you save a long walk.
I noticed first that you seem to be wanting to direct bury your electrical cables; this is a massive mistake upfront, as renting a trencher to rerun cable costs a lot compared to the cost of throwing Schedule 40, or even Schedule 80, PVC in the ground vs.
I would run 2" PVC conduit Schedule 40 underground, Schedule 80 at stub-ups instead to the shop and 1. One of the other major mistakes most folks make when wiring buildings is to skimp on panel spaces. After totaling the appliance wattages, you should multiply by 0.
You can add the largest load to the total. The extra wattage is there to account for the additional load that large motors utilize while starting up. The adjusted load represents the safety adjustment that the National Electrical Code requires. It provides a voltage drop buffer on the feeder circuit. After installing a subpanel, it is recommended that you inspect it. If there are exposed cables connecting to the subpanel, you should attach them to the wall tightly.
It would be best if you also covered open holes using a knockout plug. Ensure that the breaker or fuse is connected to a proper gauge wire. For instance, a 20 amp breaker or fuse must be connected to a 12 gauge wire. A 30 amp breaker or fuse, on the other hand, must be linked to a ten gauge wire. If you find that some wires are tangled, call an electrician to fix them.
However, the requirements vary depending on the jurisdiction. In most areas, an electrical inspection is only required to obtain a certificate of occupancy to allow the electric company to install the meter. Some jurisdictions insist on electrical work being handled only by electricians and require all changes to be inspected.
Having subpanels on the main panel can assist you in achieving several goals, especially if there is no room for installing additional circuits on the main panel.
Always follow this guide to install subpanels effectively. There are two types of standard breakers : single- pole and double - pole. Single- pole breakers are rated for volts and 15 or 20 amps. Double - pole breakers , on the other hand, are typically rated for 20 to 60 amps and supply volt power to large appliances, like electric dryers and ranges. How many electrical sub panels are allowed? Category: home and garden home appliances. You can have a million "sub panels" with a hundred-million ampere connected load all fed from your ampere rated service as long as the total demand of all the panelboards combined does not exceed amperes.
Does 2 amp breakers make amps? Does a double 15 amp breaker equal 30 amps? Can you feed a amp sub panel with a 60 amp breaker? Can a amp panel feed a amp sub panel? Can you put a 15 amp receptacle on a 20 amp circuit? What size wire do I need to run a 60 amp subpanel? Do sub panels need a main breaker? Subpanel main breaker. What size wire do I need to run a amp subpanel? How many circuits can be on a amp panel? Can you run a sub panel off a sub panel?
Can I use a amp panel with amp service?
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