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Old 10-06-2009, 02:30 PM   #1
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Default High voltage plugs/inlets question

Alright continuing the series of "What do I do now with this" threads as I build my electric rig. My current question is Grounding vs. non-grounding outlets/inlets/plugs.
Here's my idea for connections for my keggles: http://www.twacomm.com/catalog/model_2625F.htm?sid=EA154310C3C70454A620A8C6FA37AD EB
http://www.twacomm.com/catalog/model_2673.htm?sid=EA154310C3C70454A620A8C6FA37ADE B
The male inlet will be mounted on the keggle in a gang box.

Am I correct in assuming the keggle side outlet needs "grounding" and that the power feeding female plug can be non-grounding? I'm just unclear on what that means. Both components have 2 pole 3 wire. I'm no electrician and no matter how much I read up there's always something to learn.

Thank you in advance
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Old 10-06-2009, 02:53 PM   #2
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Quote:
Originally Posted by Budzu View Post
Alright continuing the series of "What do I do now with this" threads as I build my electric rig. My current question is Grounding vs. non-grounding outlets/inlets/plugs.
Here's my idea for connections for my keggles: http://www.twacomm.com/catalog/model_2625F.htm?sid=EA154310C3C70454A620A8C6FA37AD EB
http://www.twacomm.com/catalog/model_2673.htm?sid=EA154310C3C70454A620A8C6FA37ADE B
The male inlet will be mounted on the keggle in a gang box.

Am I correct in assuming the keggle side outlet needs "grounding" and that the power feeding female plug can be non-grounding? I'm just unclear on what that means. Both components have 2 pole 3 wire. I'm no electrician and no matter how much I read up there's always something to learn.

Thank you in advance
Hi!
New to the board so I'm not sure what your rig looks like?

If you are using single phase 240V. There are only two hot wires. Both read 120 volts to ground, and 240 volts across the two feeds. If you do not install an equipment ground, and one of those wires touch metal or get wet, then you touch the metal, you become the earth ground and can receive 120 volts through your body.

If you are using a heating element, your two hot leads go to each of the terminals of the element. You need to secure the ground wire on the metal housing of the element, or if a metal vessel is used, take a ta-2 lug and bolt that to the keggle, then secure the ground wire to the lug. That way if any hot conductor is to touch the base it trips the breaker.
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Old 10-06-2009, 03:42 PM   #3
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to answer the question in full, YES.. both sides of the plugged circuit need to be "grounded"= Bonding of all metal parts.In this case the equipment ground=brewery and that ground needs to go back to the circuit breaker panel. If you are using a 240vac gfci you still need that bonding ground installed.
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Old 10-06-2009, 04:17 PM   #4
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That plug you linked is for a 3 phase system. are you looking at using 110/220 or just 220v power?

For 110/220v with ground.
For 220v (only) with ground.

You have to have matching male and female plugs. Look for the NEMA type. EG: NEMA L6-30P(male) goes into a NEMA L6-30R (female)

Last edited by lazybean; 10-06-2009 at 04:20 PM.
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Old 10-06-2009, 05:05 PM   #5
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Thanks for the replies!

Quote:
Originally Posted by OLDBREW View Post

If you are using a heating element, your two hot leads go to each of the terminals of the element. You need to secure the ground wire on the metal housing of the element, or if a metal vessel is used, take a ta-2 lug and bolt that to the keggle, then secure the ground wire to the lug. That way if any hot conductor is to touch the base it trips the breaker.
Yes I plan to have the ground wire connected to the keggle body, then run all the way to join the ground in my subpanel. GFCI breaker will be in the subpanel or main breaker box.

Quote:
Originally Posted by lazybean View Post
That plug you linked is for a 3 phase system. are you looking at using 110/220 or just 220v power?

For 110/220v with ground.
For 220v (only) with ground.

You have to have matching male and female plugs. Look for the NEMA type. EG: NEMA L6-30P(male) goes into a NEMA L6-30R (female)
Ah gotcha. I will be only using these line for the full 240v. So 3 wire is all I will need. And I'm wanting female plugs to ensure that I can not touch a potentially hot male plug.
So how about these? Also, anybody know a good cheaper source for these connectors?
http://www.twacomm.com/catalog/dept_id_1001/model_C2623.htm?sid=EA154310C3C70454A620A8C6FA37AD EB
http://www.twacomm.com/catalog/model_2625F.htm?sid=EA154310C3C70454A620A8C6FA37AD EB

Thanks again, cheers!
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Old 10-06-2009, 05:31 PM   #6
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the first link in your original post was for 2 pole 240v 3 wire apps.

That is for a 30amp 240vac twistlock single phase application

single phase is 2 hot wires and one ground. residential services

You wont see three phase in residential wiring
commercial/industrial apps use three phase

Last edited by OLDBREW; 10-06-2009 at 05:45 PM.
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Old 10-06-2009, 05:45 PM   #7
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Quote:
Originally Posted by Budzu View Post
Thanks for the replies!
Ah gotcha. I will be only using these line for the full 240v. So 3 wire is all I will need. And I'm wanting female plugs to ensure that I can not touch a potentially hot male plug.
So how about these? Also, anybody know a good cheaper source for these connectors?
http://www.twacomm.com/catalog/dept_id_1001/model_C2623.htm?sid=EA154310C3C70454A620A8C6FA37AD EB
http://www.twacomm.com/catalog/model_2625F.htm?sid=EA154310C3C70454A620A8C6FA37AD EB

Thanks again, cheers!
Those would be ideal from what you have said. The L6-30R connector will be your supply(hot), and the L6-30P will be your load. That inlet you linked is for flush mounting in an enclosure, you drill a 2" hole and the Inlet mounts through that hole. Make sure your enclosure is deep enough for it too, 2" plus room for the wires to come out the back.
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Old 10-06-2009, 06:36 PM   #8
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check ebay

http://shop.ebay.com/items/30%20amp%20twist%20lock?_dmd=1&_sop=2

http://cgi.ebay.com/Hubbell-2621-Twist-Lock-30-Amp-250-Volt-Male-Plug_W0QQitemZ330364919921QQcmdZViewItemQQptZLH_De faultDomain_0?hash=item4ceb48a071
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Old 10-08-2009, 09:47 PM   #9
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$10 at Home Depot
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Old 10-09-2009, 04:06 AM   #10
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Cool! i hope they have female plugs..

thanks all
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