I’m not an electrician, but a 500 watt amp seems to be the limit for ?a 120-volt line while ?a 1000 watt and above amp needs 240-volts.
My KPA500 gives reliable service from its own 120-volt circuit, while a Quadra, LA-1K, and 1.5K-FA are happy on a 240-volt line.
I tumbled to this truth early on (at age 16 in 1961) when a Gonset GSB-101 dimmed every light in the house and periodically blew the glass fuse to my shack/bedroom’s window air-conditioner when run from what was then 110-volts. ?I’d cool the room ahead of time and then leave the air-conditioner off while I operated. ?
Having an HQ-170C and GSB-100 plugged into the same outlet was not the smartest thing I ever did either.
73,
Kent ?K9ZTV
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On Jun 29, 2020, at 10:28 PM, Bob W8RBD <
dushkoff@...> wrote:
Having this Amp up and running for a couple months, using only 110V, I can tell you that 220 is the way to go.?
This amp has given me 1000-1200 W output with 110V, but not for very long.? Not only will the amp shut off if you
exceed the current cut-off (whatever it is, I think probably somewhere around 30-33A), but when I have tried to drive
the amp toward 1KW a time or 2, it shut down my 35A 12V power supply running my FlexRadio and the Palstar HF-Auto Tuner.
Tuner and the Flex would not power up again until something reset.? Flex support suggested to go with 220V for the LA-1K as it would
be on a separate circuit than the other stuff.? Plus with 220V the current will be less compared to 110V.? ?So I'm not near a stove, but
will get a 220 line installed, very soon. Until then I'm reluctant to run amp over 500-600 watts. Only takes 21w transceiver drive to get 500w
out of the amp.? ?Hope you get yours soon!? ? ?73 de W8RBD
