L6-20P -> L6-30R

Owen DeLong owen at delong.com
Fri Mar 21 00:52:42 UTC 2014


On Mar 20, 2014, at 4:52 PM, Jay Hennigan <jay at west.net> wrote:

> 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.

Option 3: Put a 20A breaker or fuses inline in the Adapter.

Owen




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