I have a subpanel with two circuits on it, A and B, with 4 wires leaving the panel, two blue, one red, one white. The red wire was on circuit A, 20A single pole, and the two blue wires were on a circuit B, a 20A double-pole circuit, with the white going to neutral.
The red wire/circuit A is feeding outlets, while the two blue wires/cicuit B were feeding two 240v baseboard heaters.
I want to disconnect the baseboard heaters to place a different circuit there, can I disconnect the two blue wires and cap them and leave the neutral/red wire running circuit A alone? Essentially the neutral must have been servicing circuit B, so wondering if safe to leave in place when the hots have been disconnected.