concession trailer

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Ken 6789

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Someone asked me if I could wire a concession trailer. The electric requires a 240 volt, 30 amp circuit. The trailer has a 75' cord and I plan on running an outlet that far away. The length of the cord will be on the ground. I have two questions. Would you recommend a GFCI breaker? Would you run a ground rod to the trailer? Normally I would, but the trailer would only be used for one day. Would the EGC suffice in lieu of a ground rod? Thank you!
 
Ken 6789 said:
Someone asked me if I could wire a concession trailer. The electric requires a 240 volt, 30 amp circuit. The trailer has a 75' cord and I plan on running an outlet that far away. The length of the cord will be on the ground. I have two questions. Would you recommend a GFCI breaker? Would you run a ground rod to the trailer? Normally I would, but the trailer would only be used for one day. Would the EGC suffice in lieu of a ground rod? Thank you!
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I would highly recomend a gfci breaker if the customer would spring for it.
 
I have wired a couple of these myself

I have wired a couple of these myself

if this is going to be used only at the customers location running a 4 wire 30a 240v on a gfci breaker is fine, but you need to find out if they are going to be taking this thing around to local business and setting up (car dealerships, store promotions in the parkinglot etc...) if that is the case I would set it up with a standard 120v. 30 amp RV cord connection and supply them with a 30 to 20 amp cord adaptor to plug into a standard duplex rec., If they plan on setting up at the county or state fairgrounds you need to find out what recepts they have available there....
 
Article 525 should answer all questions relating to concession trailers. GFI and ground rods would be in addition to the minimum requirements.
 
In my own opinion the NEC does not apply at all to the internal wiring of a concession trailer. However when it arrives in an inspectors town how does he know it is safe?

Think about it for a minute, if the item is mobile how exactly is each locality getting a chance to inspect it at all stages of construction. With RVs and Mobile Homes this is handled by standards and listings. If your field building a concession trailer IMO your kind of in a strange black hole.

There is nothing that says that an electrical inspector in any town has to allow a home built concession trailer to be connected to the permanent or temporary premise wiring system.

The supply to the trailer would have to comply with the rules in 525. IMO it would be a bad idea to place a GFCI on the feeder. (You will have a panel at the trailer right?)
 
Ground it, 250.4(A)(1) & 250.32. In my opion an EGC will not effectively route lightning or overvoltages your distance 75', because of the distance these voltages will flash to any and all conductive items.
 
tryinghard said:
Ground it, 250.4(A)(1) & 250.32. In my opion an EGC will not effectively route lightning or overvoltages your distance 75', because of the distance these voltages will flash to any and all conductive items.
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525 does not require ground rods at each concession trailer or ride.
 
they probably won't like the idea of spending money on a gfic for just one day. i would at least make sure the frame and body are grounded properly.
 
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