Sub Panel Question......

One questing that I have been wondering about since we are discussing panels and breakers in another thread....... Can you put a sub panel on another sub panel? I think that I am going to run out of breaker space in my garage, unless I put in a larger sub panel or another sub panel off the original one. I could use some of the double breakers, but I prefer not to.

If the panel has provisions for twin breakers why not use them?

Yes you can put a sub on a sub. Lots of things to consider tho, more info is helpful.

I ran short of space (even with 8 or 10 piggyback breakers) in my 150 Amp panel and put a 100 Amp panel beside it for more slots. At the time a sub within 6' didn't require a separate disconnect.

I have 2 100 amp sub panels and each one is protected by a 100 amp breaker in the main box. At the sub panel, I have a 100 amp main breaker at the top, and neither of these sub panels are full, but I can see the day that I will need some additional breaker space. I like keeping only 3 or 4 receptacles on a breaker, since that way, if one trips, I don't have to go back to the panel and reset it immediately, but can use another receptacle to keep working until I am finished. I can also say that using this method, I have not had an y breakers trip in more years than I can remember. In the house itself, each room has a minimum of 2 breakers serving the receptacles and the lighting is on its on breaker. It might be overkill and unnecessary expense, but it wasn't very expensive to do it this way 25 years ago. Copper wire was cheap.......

Something else to keep in mind is that it's possible to use a 200 amp panel for a sub if you think you will want the extra slots. And even if you don't need the extra room it would pay to price check a 200 amp panel before buying a smaller one. 200 amp panels are very common and often times can be had cheaper. The 200 amp main breaker in the subpanel simply becomes a disconnect rather than overcurrent protection if fed from a smaller breaker in the main panel. Just figured I would post this for some people that might not know it.