[Amps] Bird 437-3 element for bird 43？

[Donald Fox]

 Good morning Hsu:
I believe the issue might be that those elements are for Bird meters with 100 ua movments. This is what I have experienced. The 7/8ths elements (as they seem to be called) will fit different line sections, but you can't interchange a 30ua element with with a 100ua elelment for obvious reasons.

Don N8ECH
     On Wednesday, April 15, 2020, 04:39:09 AM EDT, Yueh Hsu <hsu4qro at gmail.com> wrote:  
 
 Just view the website https://nm3e.com/HElements.htm, it mentioned that
437-3 element not for bird 43 wattmeter, but I knew element  437-3 match
with line section 4230-053 and 30uA/1400ohm meter,  Bird43's meter is
30uA/1400ohm , and line section 4230-053 often match with bird 43 elements
too.
    Question:Why 437-3 element can not use in bird 43?just it can not
handle 10kW(I knew,bird 43's element's power only 5000W(5000H）？
  Hsu
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