Can I run a 200 amp sub panel off a 200 amp main?

Yes, and you don’t even need another 200A breaker. The 200A breaker alread present in the panel will suffice, and so you can use a subfeed lug kit as DrSparks advises. For that matter, if the main breaker were out at the meter (e.g. a meter-main), you could simply “tee” off it with dual 4/0 to two main-lug panels.

Can you add a sub panel to a 200 amp service?

However, a 200amp subpanel can be connected to a 200amp feeder panel as long as the load is 160amps or less. There is a similarity between a main panel and subpanel since both contain two similar hot bus bars. In addition, the ground and neutral bus bars also have similarities.

What size ground do I need for a 200 amp sub panel?

GROUNDING ELECTRODE CONDUCTOR SIZING (Table 250.66)
Size of Main Panel	Copper Conductors	Aluminum or Copper-Clad Aluminum
125 Amps	#8 AWG	#6 AWG
150 Amps	#6 AWG	#4 AWG
200 Amps	#4 AWG	#2 AWG

Can you run a sub panel off a sub panel?

Yes, you can. The systematic computer programmer in me even thinks it’s a good idea, allowing a “star” topology for electrical distribution. You will need 4 wires, as others have mentioned. Keep the ground and neutral separate in the subpanels.

Can I run a sub panel from another sub panel?

Yes, it’s redundant, but it’s still required. The wire feeding the new subpanel must be protected from overcurrent by an appropriately-sized breaker. It can be at either end – in the old subpanel or in the new subpanel – or at both ends.

What size wire feeds a 200 amp panel?

Wire Sizes For 200 Amp Service Wiring 200 amp service requires either #2/0 copper wiring or #4/0 aluminum or aluminum clad wiring. Which wire used is determined by the voltage drop and length of the wiring. Many electrical contractors opt to use #4/0 aluminum or copper-clad wire.