Temporary 240v outlet

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  #1  
Old 06-25-17, 02:46 PM
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Temporary 240v outlet

Hi all,

I'm having a party at my house and will be having a food truck come to serve our guests. The food truck has a Generac GP7000E generator that is quite loud and I would rather install a temporary NEMA L14-30R, 30 Amp outlet in our garage he can simply plug into. I'm trying to figure out how to do this correctly.

My panel is in our basement. The garage is attached to the house and you can access the garage easily to pass wire through. I was planning on installing the outlet in a box attached to an interior wall near one of the overhead doors so we can leave the garage door open, he can be parked outside the garage and plug into the outlet.

Any issues with this idea? I didn't want to install the outlet into the wall and bust sheetrock to make this happen. I really wanted to come into the garage and run the wire along the wall and terminate it in a proper metal box near the overhead door. I don't see the need for a long term 240v connection in the garage anyway.
 
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Old 06-25-17, 03:16 PM
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Sounds good except he may (probably) need a 120/240 receptacle not a 240v receptacle. Did he give you the NEMA specification for his plug?
 
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Old 06-25-17, 03:37 PM
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I was planning on using this. Would that be correct?
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Old 06-25-17, 05:43 PM
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I was planning on using this. Would that be correct?
No way to know. You need to find out what the plug on the food truck is.
 
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Old 06-25-17, 08:14 PM
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That is the same outlet that is on the generator. But! the food truck could be using 120V outlets instead of 120/240V plug or both.

Ask the food truck guy what is plugged where on the generator.

Or you could use this, but probably too much for one party.
CEP Portable Power Distribution Center w/GFCI — 20/30/50 Amps, 125/250 Volts, 8 Outlets, Model# 8706GU | Generator Power Distribution| Northern Tool + Equipment


Also, don't forget that you will need a long extension cord running to the food truck.
Generator cord will do the job if the food truck will be close to the garage.
If not, you have have to make your own using 10 AWG power tool cable, which won't be cheap.

Personally, if you can keep the tuck away safely during the party, I'd just run 10-3 NM-b all the way to the food truck and install outlet in a handy box. Use UF-b if want to play a little safer.
Probably won't even bother putting outlet in the garage if it won't be used again.
If laundry room is close enough, just use dryer outlets.
 
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Old 06-26-17, 05:53 AM
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Again as mentioned already.

You must find out from the guy with the truck exactly what receptacle he has.

Yes, 10/3 will be good for 120/240v but even if he has a 14-30R you are showing in your picture a L14-30R (which is twist-lock, that is what the L stands for before the 14). So you have two questions for him to be sure. If he tells you it is 120/240 twist lock then it is the L14-30R; no twist lock then just 14-30R.

But you also have to remember something else. He will more than likely have a receptacle on his truck and you are installing a receptacle in the garage which means you will need a male on each end of the cord from the garage receptacle to the truck receptacle.
In that case you will need either a 14-30P or L14-30P on both ends of the cord (notice the difference at the end; P=plug/male end - R=receptacle/female end).

Mod Note: The cord described is contrary to code and so dangerous it is known as a suicide cord.
 

Last edited by ray2047; 06-26-17 at 06:07 AM. Reason: Add safety warning.
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Old 06-26-17, 10:15 AM
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We're waiting in a response from the food truck. I took some pictures when I was at an event they were at yesterday. Name:  IMG_0119.jpg
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Old 06-26-17, 02:25 PM
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Holy Crud!! I can't believe I suggested that!! that is not my normal way of thinking. Was going with thought process while thinking what the truck may have and my thought steered me to one end of the cord with a male from the receptacle to the house and then not even thinking about the other end (whether straight blade-twist) as I was distracted by something else at the moment. Good catch ray2047-thanks!!
 
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Old 06-26-17, 03:45 PM
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No problem AFJES. I figured you just had a temporary lapse.

Ride we need to know if he has an inlet on the truck and which NEMA designation and if twist lock or straight blade.. The picture doesn't tell us that.

Does he actually have any 240 volt equipment on the truck? If 120 volt only maybe an extension cord from a 120v receptacle and multiple receptacle strip may be easier.

Example of twist lock inlet:
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Last edited by ray2047; 06-26-17 at 04:21 PM.
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Old 06-26-17, 04:58 PM
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Thanks for all your replies so far. This is great. If it is the case that he only has 120v equipment onboard, can I use something like this?

https://www.amazon.com/Coleman-Cable...ator+y+adapter
 
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Old 06-26-17, 05:27 PM
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Nothing that complicated more like a #14 extension cord from the garage to the truck and a:

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Old 07-18-17, 07:41 PM
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Personally, if you can keep the tuck away safely during the party, I'd just run 10-3 NM-b all the way to the food truck and install outlet in a handy box. Use UF-b if want to play a little safer.
Probably won't even bother putting outlet in the garage if it won't be used again.
If laundry room is close enough, just use dryer outlets.
I ended up going with 10-3 ufb and installing it on a handy box mounted to the garage wall of my house. Everything went awesome, especially with no noise. The guy was impressed. He said that everyone keeps asking him how to have the truck use their home power but he's usually at a loss trying to explain it. Took a picture of my setup and everything. Thanks for all your help here. Couldn't have made it work/be safe without your advice.
 
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