Author Topic: Advice on which CT's to use  (Read 3180 times)


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Advice on which CT's to use
« on: December 02, 2014, 01:19:41 AM »
I'm planing on purchasing a TED Pro system for my home. I been looking everywhere to find out if a 60 Amp CT will be OK to use on my 15 and 20 amp circuits in the house? Will it be more accurate to use 20 Amp CT's instead or 60 AMP? Are there advantages of using a 60 Amp ct on a 15 or 20 amp circuit?

Thanks in advance.


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Re: Advice on which CT's to use
« Reply #1 on: December 02, 2014, 01:41:11 AM »
Hello gcar,

Thanks for the question.

Take a look at the revised Spyder Specifications here:

To condense:

To start, a Spyder is not an MTU. It does not have the same accuracy, nor does it provide second data. The Spyder only reports every minute.

If the loads you are wanting to monitor are above 200 watts, you can use either the 200 amp CTs or the 60 amp CTs. Choose according to the amperage draw of the circuit you want to monitor.

If you want to monitor loads as low as 25 watts, you will want to use the 20 amp CTs.

For anything below those thresholds, you will probably want an MTU to monitor the loads.

I hope this helps. Let me know if you have any other questions.

Best Regards,

TED Forum Support