Staco variac inrush (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Tue, 30 Oct 2007 13:05:27 +0000
From: David Rieben <drieben@xxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Cc: drieben@xxxxxxxxxxx
Subject: Staco variac inrush

Hi all,

I was wondering if anyone else has noticed that Staco brand variac
seem to have more of an inrush current issue than other major brand
names of variable transformers (namely Powerstat)? For example, I
have a 22 amp, 120/140 volt Staco that will trip the 20 amp service
breaker probably 90% of the time at power up, unless I plug it in a
good ways "downstream" from the breaker box - i.e. plug it in at the
far end of the house from the breaker box or at the end of a 100 ft.
extension cord. Also, I once had a triple stack 28 amp, 240/280 
volt Staco (total 84 amps rating) that would trip the 100 amp circuit
breaker almost every time at power up yet I now have a 4-stack
1256D Powerstat (28 amps at 240/280 volts x 4) that virtually 
NEVER trips the same 100 amp breaker at power up. Anyone
else have any other similar experiences to share?

--
David Rieben