I am an Industrial Controls Engineer and I am designing a panel with a PLC, DC Power Supply, Safety Relay, Light Curtain and laptop convenience receptacle. Incoming voltage to the panel will be cutomer supplied 120 volts 15 amps through a standard wall outlet. It is my understanding that the control components I mentioned do not need to be taken into consideration for the SCCR value, however I am unsure about the laptop convenience receptacle. Would this be considered a power circuit or a control circuit?? If it is a control circuit, do we need to provide labels that classify this as a control circuit. Labeling this in general, does this hurt or help me.
Panel SCCR
- Thread starter darrin
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- Chapel Hill, NC
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- Retired Electrical Contractor
I have no idea but I thought I would bring this up to the top of the forum list for you. :grin:
davidr43229
Senior Member
- Location
- Columbus, Oh
Darrin,
You are correct about the receptacle and needs to be taken into consideration when preforming your overall SCCR . You need do several things here. Usually the SCCR of a standard recetacle is 200-500amps., Hubbel makes on rated at 10,000amps. I would put a fuse in front of that rated to 3-5 amps (Class CC usually) and label the receptacle "Lap top use only" or " diagnostics Only". That should fix your concerns.
Just my $.02
You are correct about the receptacle and needs to be taken into consideration when preforming your overall SCCR . You need do several things here. Usually the SCCR of a standard recetacle is 200-500amps., Hubbel makes on rated at 10,000amps. I would put a fuse in front of that rated to 3-5 amps (Class CC usually) and label the receptacle "Lap top use only" or " diagnostics Only". That should fix your concerns.
Just my $.02
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