100-150 Amp Plug For Enclosed Trailer - Electrical - Contractor Talk

100-150 Amp Plug For Enclosed Trailer

 
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Old 08-21-2019, 05:54 AM   #1
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100-150 Amp Plug For Enclosed Trailer


We have an enclosed trailer we work out of. The one roof top AC wasn’t cutting it and we are installing two more. They recommend dedicated 20 amp circuits for each AC. The trailer has a 200 amp panel and currently has a 50 amp RV style plug and a 50’ cord going to a big diesel generator on another trailer.

Obviously the 50 amp plug and our 4ga cord ain’t going to work with all three ACs and other tools running so we are upsizing the cord but what are my options for plugs that can handle that kind of amperage?
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Old 08-21-2019, 07:59 AM   #2
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Re: 100-150 Amp Plug For Enclosed Trailer


How many tools are you using at once? With your 50 amp plug you can basically have 6 20 amp circuits and I doubt you'll trip the main.

I'd like to see pictures of this trailer.

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Old 08-21-2019, 09:19 AM   #3
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Re: 100-150 Amp Plug For Enclosed Trailer


Maybe one of these

https://www.elecdirect.com/pin-sleev...sleeve-devices
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Old 08-21-2019, 11:51 AM   #4
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Re: 100-150 Amp Plug For Enclosed Trailer


Is your trailer insulated? I could see adding insulation being the best bang for the buck
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Old 08-21-2019, 02:58 PM   #5
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Re: 100-150 Amp Plug For Enclosed Trailer


The trailer is insulated and has interior siding.

It is a 32’ gooseneck. Not so much the tools drawing the power the AC units draw around 12 amps each I believe. 36 amps steady load does leave much room for anything else with 50 amp service.
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Old 08-21-2019, 03:20 PM   #6
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Re: 100-150 Amp Plug For Enclosed Trailer


Long term, add a layer to the roof with a well vented space, with maximum eves that you can pull down the road without a permit.

Short term, add an awning over the trailer roof to reduce solar heat gain.

Buy a 200 Amp Cord ?

buy and use 3-4 50 Amp cords, connector costs I'd think would favor getting a 200 ampere Drop/over head cord....
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Last edited by Fouthgeneration; 08-21-2019 at 05:14 PM.
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Old 08-21-2019, 04:40 PM   #7
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Re: 100-150 Amp Plug For Enclosed Trailer


Quote:
Originally Posted by bdog1234 View Post
The trailer is insulated and has interior siding.

It is a 32’ gooseneck. Not so much the tools drawing the power the AC units draw around 12 amps each I believe. 36 amps steady load does leave much room for anything else with 50 amp service.
240v circuit with 50 amps per 120v leg, so you have quite a lot available.
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Old 08-29-2019, 02:27 PM   #8
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Re: 100-150 Amp Plug For Enclosed Trailer


60 amp is the largest common cord and plug.

There are some 100+ amp industrial connectors. Most of them are 3 phase, but I've seen some single phase, 100A 250V connectors. Problem will probably be finding one in a 4 wire.

Might be available, I didn't research it.

I know that the big RV's have a 50A hookup, and they will run 2 AC units, electric fridge, electric water heater, maybe outdoor fridge, and lights and other accessories.


Another option would be to add another 50A or so sub panel. A 50A sub is about 1/4 the cost of a 100A cord connector. And #2 4-wire SOOW cord.... $13/ft.


Then you could put all the ac units on one panel, and everything else on the original, and run 2 50A cords. Assuming you have 2 50A outlets on the genny.
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Old 08-29-2019, 03:37 PM   #9
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Re: 100-150 Amp Plug For Enclosed Trailer


Run the direct bury wires when the temp power is installed, use conduit where ever the forklifts will run over the wires, or run a conduit the whole way and abandon it at punch out, far cheaper then a rare 200 amp cord that is going to get mangled by some idiot with a tracked vehicle. IMHO

Out of sight out of OSHA's fine zone.....

You spent 200.00 $ POSTING ABOUT it so far
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Old 08-29-2019, 03:51 PM   #10
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Re: 100-150 Amp Plug For Enclosed Trailer


No wonder people complain about contractors charging too much. They overthink everything, and in this case all because of an overlooked math error. The simple solution 50A RV plug gives you 100A of 120v power!

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