Trying to switch the current being measured will require heavy duty switches and careful coordination, and will add complexity aroud the safety equipemnt (fuses, current balances etc) so don't attempt to do that.

You shouldn't worry about multiple clamps in close proximity, the clamps don't radiate much nor will they pick up much interference.

You could have multiple clamps (or instead one piece current transformers) each with burden resistor connected full time and switch between using small signal relays them taking readings from each periodically.

Trying to switch the current being measured will require heavy duty switches and careful coordination, and will add complexity aroud the safety equipemnt (fuses, current balances etc) so don't attempt to do that.

You shouldn't worry about multiple clamps in close proximity, the clamps don't radiate much nor will they pick up much interference.

You could have multiple clamps (or instead one piece current transformers) each with burden resistor connected full time and switch between them using small signal relays them taking readings from each periodically.

Put all the wires you want to measure the combined current of through a single clamp, if you're in America and some are phase and some antiphase put the antiphase ones through backwards.

on the other hand you shouldn't worry about multiple clamps in close proximity, the clamps don't radiate much or pick up much interference.

Trying to switch the current being measured will require heavy duty switches and careful coordination, and will add complexity aroud the safety equipemnt (fuses, current balances etc) so don't attempt to do that.

You shouldn't worry about multiple clamps in close proximity, the clamps don't radiate much nor will they pick up much interference.

You could have multiple clamps (or instead one piece current transformers) each with burden resistor connected full time and switch between using small signal relays them taking readings from each periodically.