7 i8 u) }) Q8 aWhen open a motor connection box, : ?% {. G: J* S" G1 S# F; c0 {0 N" UBeside three phase wires for the power,1 K+ x( j, J; x+ ^; A; Y. C
We have another two wires marked as P1 and P2: O" g5 `" ^8 i$ a( [- B4 F1 x
What is that for(P1, P2)? 3 D; i0 ^( |3 g$ T# v+ F# V1 hMost of the time, they are not used. 2 h, F) y- {, x, G0 w 0 H* I( j) G/ U/ L, JThanks!
Good question! % G3 I L6 M) D0 u! _4 K8 y5 F( @( T# A8 p
I think the two leads P1 and P2 are for the thermal switch (mostly normal close), use multimeter to check out.$ P* X% q& j" {9 i; d- Y