CT clamp polarity

[jp1gt]

I am making up an off grid solar EV charger. the inverter came with (2) 200 amp CT's for grid tie systems. I want to use them for the energy sharing meter. Is there any polarity situation with the CT clamps? Mine are black and white.

 

[DPC]

Draw a picture of what you want to do and what you are wiring it with.

Yes there are some polarity and grounding issues with CTs but I need to see how your wiring it up to help.

 

[jgh]

The situation is: CTs have polarity. If you fit one the wrong way round, it's reading backwards and whatever it is feeding will be give worse-than-useful information.

 

[jp1gt]

 

[DPC]

If the polarity is backwards t he e unit will read power flow in the wrong direction

Select or mark X2 on the CTs
Tie them together and bond to ground

Never open a CT under load or high voltages Dan be induced that damage things

VERY HIGH VOLTAGES!!!!

 

[DPC]

What you have there looks mighty weird

Why the CTs tied to the line side breaker?

This is three phase but typical of a normal set up