Motor Lights

[Elekk]

If there is option for three lights, then red can be used for motor-run, green for motor-stop, and amber for overload.

What should be a good option if there are only two lights available?

How about Red for Run and Amber for Stop/Overload?

 

[steptoe]

:C

 

[revjames]

Generally, in industrial situations its green for start, red for stop. Usually a green indicator either in the button or separate. Amber light indicates an overload. Not usually a need for a red light to tell you its stopped.

 

[Larnacaman]

Indication lights can get very confusing, there are different requirements regarding colours for each system. For example, on LV Switchboards, Green will normally indicate breaker is energised, while on the HV/(MV) switchboards, Red is always used to indicate breaker is on. Even then, various countries can have different colours again. If nothing else, the function of RED and GREEN should be made universal so that everyone knows if a system is ON or OFF, no matter what the system is controlling/indicating!!!!

 

[Bacon]

I used to wire them Green for start Red stop and the a N/C aux on each contactor for the alarm circuit indicating a fault had occured on a motor like O/L tripped.

 

[Sidewinder]

As Canoeboy says, there are now standards with regard to this and legislation under the new approach directives & the health & safety signs & signals regulations, amongst others.

Basically, unless you have a formal exemtion from HSE in the UK you must comply with these, the attachments Canoeboy has added are pretty much teling you how to comply with the law, what went before or what others do is really irrelevant.