L6-20P -> L6-30R

Thu Mar 20 23:52:28 UTC 2014

On 3/18/14 3:54 PM, George Herbert wrote:

> This sort of thing is usually an adapter, a little cylinder with a L6-20R
> on one end and a L6-30P on the other, since the loads are safe.  Either
> that, or a short jumper cable wired the same way.

The loads aren't safe.  You will have a 30-amp circuit breaker feeding
the L6-30R socket.  The load and its wiring are only rated for 20 amps
so if there's an overload you will exceed the ampacity of the wiring
downstream of the L6-20P and the L6-20P itself.

Option 1: Change the breaker to 20A and change the receptacle to L6-20R.

Option 2: Buy a 30-amp rated PDU equipped with L6-30P plug.

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Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
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