 Re: control circuits
never come across regs regarding control voltage other than those which relate to selv/pelv/class1 class two but then i might have missed
never had an issue using 230 volts on em stop circuits used in say a classroom
i believe it comes down to control panel design and some of the things you need to look at are;
other voltages present and are you insulated to highest present
what instrumentation cable is inside the panel
length of run
type and voltage of other instrumentation present
am i on the right lines? |