Do the voltage drop and fluctuation occur?

Shervan360 · Aug 11, 2024

Hello,

We have a mini split AC Inverter. We need electrical wire for the second mini split AC inverter.
Can we get a wire branch from the first AC terminal?
Do the voltage drop/sag and fluctuation occur?

[ElectriciansForums.net] Do the voltage drop and fluctuation occur?

James · Aug 11, 2024

You should install an extra wire to the distribution panel.

Shervan360 · Aug 11, 2024

James said:
You should install an extra wire to the distribution panel.

Thank you, Could you please tell me the problem with the above solution?
Do the voltage drop and fluctuation occur or other problems?

James · Aug 11, 2024

You will not be able to turn them off independently to work on them.

You may be overloading the existing cable when you add the extra load.

Shervan360 · Aug 11, 2024

James said:
You will not be able to turn them off independently to work on them.

You may be overloading the existing cable when you add the extra load.

Thanks, If the cable is thick enough and the fuse capacity is sufficient, is there any other problem?
When the second AC is turned on, does the voltage sag and fluctuation occur in the first AC? Can it be harmful to the electrical board and compressor?

Shervan360 · Aug 11, 2024

When the second AC is turned off, does the voltage spike and fluctuation occur in the first AC? Can it be harmful to the electrical board and compressor? (and vice versa)

James · Aug 11, 2024

These are questions to complicated for a simple answer

It depends on many things
Cable size
Cable length
Load type and current
Filtering and harmonic distortion
Power factor

For this reason it is normally best to follow manufacturers instructions and give each their own supply cable.