Moving circuits to sub panel with two way Gen/Utility transfer Generac box

etp

Member
OK, Have most of the stuff installed except actually moving the 15/20 amp 110 breakers in the main panel to the new sub panel. Both panels are QO and I went ahead and bought the snap on neutral bar 100 amp 24 circuit QO panel for my sub.

Several questions on pig tailing the wires in the main panel:

Grounding conductors: any limit on how many I can group together and use one wire to extend to the new sub panel? Why can't I just connect the two grounding bars? Both panels are metal nippled together. Preferred method for pig tailing?

The new sub has no grounding bar! I added one! I

I assume just extend the grounded and ungrounded conductors to the new panel.

Equipment is a Generac 100 amp transfer switch panel (no additional breakers spots), 30 amp 4 prong generator receptacle, QO 100amp sub panel, QO 200 amp main panel
 
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etp

Member
Last edited:

kwired

Electron manager
OK, Have most of the stuff installed except actually moving the 15/20 amp 110 breakers in the main panel to the new sub panel. Both panels are QO and I went ahead and bought the snap on neutral bar 100 amp 24 circuit QO panel for my sub.

Several questions on pig tailing the wires in the main panel:

Grounding conductors: any limit on how many I can group together and use one wire to extend to the new sub panel? Why can't I just connect the two grounding bars? Both panels are metal nippled together. Preferred method for pig tailing?

The new sub has no grounding bar! I added one! I

I assume just extend the grounded and ungrounded conductors to the new panel.

Equipment is a Generac 100 amp transfer switch panel (no additional breakers spots), 30 amp 4 prong generator receptacle, QO 100amp sub panel, QO 200 amp main panel
Metal nipples are sufficient method of equipment grounding. Nothing prohibits you from running an actual conductor - only one would be necessary and needs to be sized per the largest overcurrent protective device which is probably your feeder breaker supplying second panel.
 
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