The Energy Detective Forums
May 23, 2018, 09:54:58 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: New TED Support forum launched!!
 
   Home   Help Search Login Register  
Pages: [1]
  Print  
Author Topic: 60Amp Donut work on smaller lines?
toby_lang
Newbie
*
Posts: 1


« on: December 03, 2017, 04:06:14 PM »

Hi sorry for the newb question. If I put the  60Amp Donut on a smaller line (15 Amp) will it still work?
Logged
pfletch101
Sr. Member
****
Posts: 418


WWW
« Reply #1 on: December 03, 2017, 09:23:07 PM »

It will work. You won't get quite the same precision and (assuming that we are talking about Spyder CTs) the channel will read zero at and below a higher non-zero power draw than it would with a 20A CT. The optimal Spyder setup will use 20A CTs for all lines except those expected to see currents higher than 20A. Remember, too that a '40A' 230V breaker is looking at both 'sides' of the circuit, so each 'side' can be treated as if rated at 20A.
Logged

Peter R. Fletcher
TED Pro Home - main MTUs monitoring utility and PV Solar feeds; 2 Spyders monitoring selected individual circuits
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.16 | SMF © 2011, Simple Machines Valid XHTML 1.0! Valid CSS!