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Author Topic: Custom Adapter  (Read 3165 times)

Kristian Stevenson

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  • Lynchburg, VA
Custom Adapter
« on: October 22, 2018, 12:36:21 PM »

Hey all,
I am trying to come up with a back hand way to get L21-30 3Phase connection before we can have a new PD delivered. Our current PD's have plenty of L14-30 outputs. My thought was make a double L14-30P to L21-30R to get the 3 hot legs needed. They would be plugged into consecutive L14-30 outlets on the PD to keep the load balanced (XY,ZX). Thoughts?
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Kristian Stevenson

TJ (Tom) Cornish

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Re: Custom Adapter
« Reply #1 on: October 22, 2018, 02:04:54 PM »

Hey all,
I am trying to come up with a back hand way to get L21-30 3Phase connection before we can have a new PD delivered. Our current PD's have plenty of L14-30 outputs. My thought was make a double L14-30P to L21-30R to get the 3 hot legs needed. They would be plugged into consecutive L14-30 outlets on the PD to keep the load balanced (XY,ZX). Thoughts?
Probably marginally acceptable in the shop; not OK for a gig.
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Frank Koenig

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Re: Custom Adapter
« Reply #2 on: October 22, 2018, 03:53:12 PM »

Hey all,
I am trying to come up with a back hand way to get L21-30 3Phase connection before we can have a new PD delivered. Our current PD's have plenty of L14-30 outputs. My thought was make a double L14-30P to L21-30R to get the 3 hot legs needed. They would be plugged into consecutive L14-30 outlets on the PD to keep the load balanced (XY,ZX). Thoughts?

The common-sense test that this fails is that if you unplug one of the L14-30s with a load connected to the L21-30 there will be a live male contact that could hurt somebody. Would I do this "in the lab" with just me around? Sure. But it's not safe around humans :) -F
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"Nature abhors a vacuum tube." -- John Pierce, Bell Labs

Kristian Stevenson

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Re: Custom Adapter
« Reply #3 on: October 24, 2018, 06:00:50 PM »

The common-sense test that this fails is that if you unplug one of the L14-30s with a load connected to the L21-30 there will be a live male contact that could hurt somebody. Would I do this "in the lab" with just me around? Sure. But it's not safe around humans :) -F

Didn't think about that under load scenario - makes sense.
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Kristian Stevenson

ProSoundWeb Community

Re: Custom Adapter
« Reply #3 on: October 24, 2018, 06:00:50 PM »


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