Quote:
Originally Posted by apalrd
Maybe the rule should be re-written to exempt low voltage sensor wiring (6v or lower) and all switched circuits. As it is now, Jeff's situation would have been legal (IMO) by the letter of the rules if you had used a spike relay to control the pneumatics instead of the pneumatics bumper (as long as the ground was black or blue) which makes very little sense.
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The rule has exemptions already for :
outputs of relay modules, speed
controllers, or sensor outputs
The rule also pertains to constant polarity wires only.
The spike relay still needs to be wired (for power) and then it uses a PWM cable for control Using the pneumatics bumper eliminates the need to power the spike through the power distribution panel.