6 ?& n2 o+ [6 A+ `0 }When open a motor connection box, ( q9 q7 l- E' m4 C. _
Beside three phase wires for the power,) D% ]$ ~. V3 j. g( T
We have another two wires marked as P1 and P2 4 e, D- \# X& ~! [3 o. K1 bWhat is that for(P1, P2)?. V3 ?4 Q- {: R
Most of the time, they are not used.5 h) t5 `7 d# W) y& N
Good question! " c. w0 C1 h8 C! n6 x5 U: {7 r- S. W1 e9 e- T7 |. u
I think the two leads P1 and P2 are for the thermal switch (mostly normal close), use multimeter to check out.* V0 W, V: b) ^/ C% e( d& M
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