17 Feb
2003
17 Feb
'03
2:23 a.m.
I'm looking for someone in the US with a L5-30 receptacle or an adapter so
that I can plug my L5-30-plugged DEC 861PC Power Controller into a standard
wall outlet. Thanks!
--
Jeffrey Sharp
17 Feb
17 Feb
6:41 a.m.
On Mon, 17 Feb 2003, Jeffrey Sharp wrote:
I'm looking for someone in the US with a L5-30
receptacle or an adapter
so that I can plug my L5-30-plugged DEC 861PC Power Controller into a
standard wall outlet.
That should be something you can find at your local hardware or electrical
supply store.
I just found an L5-30R by searching Home Depot's site (Leviton Model
70530FR): $13.95.
Be aware that you are asking to plug a 30-amp device into a standard wall
outlet (I assume you mean a standard US receptacle with two vertical
blades and possible a ground pin). This is not recommended, since those
types of receptacles usually only accomodate up to 20 amps. You need a 30
amp circuit.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *
7:28 a.m.
On Mon, 17 Feb 2003, Vintage Computer Festival wrote:
Be aware that you are asking to plug a 30-amp device into a standard wall
outlet (I assume you mean a standard US receptacle with two vertical
blades and possible a ground pin). This is not recommended, since those
types of receptacles usually only accomodate up to 20 amps. You need a 30
amp circuit. ^^^^^^^^^^^
^^^^^^^^^^^^
Not so fast, there, Edison! ;}
In this case, only if the equipment *actually draws* the maximum 30
amps... the controller and mains cordset are sized to accomodate the
greatest load that particular system can be configured for. This is almost
never what the machine actually wants. The purpose of the 30-amp plug is
to ensure that safety considerations are followed, and also to have enough
reserve power available for additional equipment installations and
upgrades, and to avoid 'nuisance tripping' if the system power consumption
gets at or near the mains circuit breaker capacity.
For example, my PDP 11-44 draws 7.3 amps from the 110V line when it's
running, including RL02 activity, and it came with one of those plugs.
I just get a nice 'standard' plug from the HomeMegaHardwarePlex near me
and perform a connectorectomy on it. Problem solved.
If you are really trying for a "100 point" restoration, then I'd use the
mains adapter, but otherwise, just change plugs.
Cheers
Nicky Tesla
8:04 a.m.
On Mon, 17 Feb 2003, John Lawson wrote:
In this case, only if the equipment *actually
draws* the maximum 30
amps... the controller and mains cordset are sized to accomodate the
You are indeed correct. I just wanted to make sure Jeffrey didn't
haphazardly destroy the wiring in his house ;)
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *
1:34 p.m.
On Monday, February 17, 2003, Vintage Computer Festival wrote:
Oh. Duh. I wasn't thinking. I had just finished digging through eBay, so I
wasn't in a local store mood. :-)
I'm
looking for someone in the US with a L5-30 receptacle
That should be something you can find at your local hardware or electrical
supply store. Be aware that you are asking to plug a 30-amp device
into a standard wall
outlet ... those types of receptacles usually only accomodate up to 20
amps.
I sincerely appreciate your concern, but I have already thought of that. The
circuit is 20 amps, dedicated. The machine (PDP-11/34) won't draw that much.
I feel that I am safe.
--
Jeffrey Sharp
18 Feb
18 Feb
7:17 a.m.
Jeffrey Sharp asks:
I'm looking for someone in the US with a L5-30
receptacle or an adapter
so that I can plug my L5-30-plugged DEC 861PC Power Controller into a
standard wall outlet. Thanks!
30A twist-lock receptacles aren't all that hard to find. I got one
at the local Home Depot store. They can also be found at Greybar Electric,
though their prices are generally a bit higher.
Of course, you aren't supposed to just replace an 5-15R with an L5-30R,
you also need wiring that's rated for 30A. If you build an adapter to
a 15A plug, it would be a good idea to put a 15A breaker in the adapter.
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