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thanksinadvance
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Join Date: Mar 2010
Posts: 33
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120vac with 24v in a gutter

04/08/2010 12:05 PM

Stuck out in the field and need to know if you can run 120vac and 24v circuits in a 4x4 gutter, stuck in field wo nec in an emergency situation

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thanksinadvance
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Join Date: Mar 2010
Posts: 33
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#1

Re: 120vac with 24v in a gutter

04/08/2010 12:26 PM

Told him to run all 600v control wire or seperate by 12" for capacituve coupling/inductance

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RDGRNR
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#2

Re: 120vac with 24v in a gutter

04/08/2010 4:04 PM

It's OK, especially if the 24V is AC power for devices. The problem is that if your devices are measuring something and sending back 4-20 or 0-10 signals you should shield them, especially if it's a long run. What's this power of yours doing anyway?

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JRaef
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#3

Re: 120vac with 24v in a gutter

04/08/2010 4:25 PM

You do have to be a little careful about induced voltages if the 24V is involved in PLC inputs, but only if there is significant current flowing in the 120V circuits.

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PWSlack
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#4

Re: 120vac with 24v in a gutter

04/09/2010 2:59 AM

It would be wise to segregate them as widely as possible, though 4-20mA circuits are largely immune from nearby AC circuit coupling.

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