No, combining the ground will not render the GFCI useless. Just imagine for a minute any metal j-box, or any metal stud construction building, all those grounds become interconnected through the yokes of the receptacles.
Can 2 circuits share a breaker?
Yes, it’s fine to combine circuits onto one breaker, at which point they become one circuit.
Can you have 2 different circuits in the same box?
The answer is yes you can have 2 separate circuits in the same box (they can have a splice also but not needed in your case). The only concern would be the total box fill. Based on the NEC the wire fill would be calculated at 2.0 for each conductor for 14 gauge wire and 2.25 for 12 gauge wire.
Can 2 different circuits share a neutral?
What is a multiwire branch circuit? A multiwire branch circuit is a branch circuit with a shared neutral. This means there are two or more ungrounded (hot) phase or system conductors with a voltage between them and a shared neutral.
Can a GFI share a neutral with another circuit?
Yes. GFCI receptacles work fine supplied by a multi-wire circuit. GFCI circuit breakers have a separate terminal for the neutral wire which must be run with the hot wire.
How many circuits can you have in a junction box?
For example, the smallest 2-by-4-by-1-1/2-inch-deep box can comfortably splice only two cables (four or five conducting wires), while the largest 4-by-4-by-2-1/8-inch-deep boxes can handle as many as four to six cables (up to 18 individual conducting wires).
Can one outlet have two circuits?
It’s possible to safely have two circuits feeding one receptacle, if you have a hot/neutral pair for each segment. Additionally, current code requires dipole breakers in this case, so overload on either circuit shuts off both.
Can dedicated circuits share a neutral?
A dedicated vs separate circuit is the argument– As I seeit a dedicated circuit should not share a neutral and a separate circuit may share it.
What is a shared neutral breaker?
Quote from the video:
Quote from Youtube video: These two breakers must be on different phases. So each each breaker every other breaker is on is feeding from the left side and every other and then the up that one's from the right side.
Is it OK to have more than one GFCI on a circuit?
The Standard Number Of GFCI’s On One Circuit
You may use two or more GFCI rated outlets on one circuit if you like. However, if one trips or goes bad, all the outlets/GFCIs down the line will be affected. That’s why you should test your GFCI’s monthly to ensure proper operation.
Can you daisy chain electrical outlets?
Electrical receptacles have two pairs of terminals so that you can daisy-chain multiple receptacles on a single circuit in an existing house.
Can bathroom lights and outlets be on same circuit?
The Bathroom Needs at Least Two Dedicated Circuits
This is no more. The bathroom electrical code now stipulates that the bathroom must have dedicated circuits that aren’t shared with outlets or lights in any other room. You must provide at least two of these circuits.
