Pete C. wrote:

Ignoramus18851 wrote:


There are some intermittent problems at home related to me starting my
RPC. It is beginning to affect my marriagee.

1. A TV once turned off

2. At another time, our kitchen oven, where me and my son placed some
cookies to bake, went crazy and went into a cleaning mode and burned
the cookies.

I suspect that it is so because the main 10 HP motor takes a
comparatively long time (1-2 seconds) to spin up, and draws about 120
amps during this time.

I am considering adding some capacitance to increase its starting
speed, but would like to double check if this is a step in the right
direction. I would turn these caps off after the motor comes up to
speed.

thanks

i



Sounds like you have an excuse to upgrade your electrical service. The
problem isn't your RPC, that's a perfectly normal home shop item, the
problem is your inadequate electrical service.

Tell the SO that your glad the RPC has pointed out the potentially
dangerous deficiencies of the homes electrical service so you can
upgrade to 400A service before there is a fire or something.


Well, actually, that isn't so ridiculous. My dad remarried about 15
years ago,
and they were having problems in her house, with lights going out and then
coming back on later. I said that sounded serious, call your
electrician. The
licensed. professional electrician
said it was "normal, nothing you could do"! I said, "wow, you need a new
electrician!" My dad didn't want to believe me, then his next-door
neighbor,
who is an EE, agreed, in much stronger terms. Well, nothing happened until
I got a chance to visit. I pulled the cover off the electrical panel,
and many
of the wires were so loose in the breakers you could just pull them striaght
OUT! Yikes! So, I retorqued all the hold-down screws, and there were no
further problems. EVERY screw in the panel was loose.

If Igor has a reasonably-rated electrical service, this could be the
same problem.
Anyway, that is something he can check. And, if he has anything less than
a 100 A service, he really is not going to be able to run a 10 Hp idler
motor.
With typical house loads running, you really don't want any less than a 200
A service to run this kind of equipment.

Jon