I have a 25 yr old aerobic pump out and spray on lawn system. There are three tanks, concrete. The middle tank is the aerator tank and it uses a shaft type aerator. I have replaced the aerator about 6 tmes in 25 yrs. Usually use a Flagg aerator for about $475 each time. It just plugs in and runs constantly. Now they are telling me I need to add a 7 amp circuit braker to protect the motor from overloads due to hair attaching to shaft. Never observed much hair on the shaft. Can/should I add the 7 amp circuit breaker without adding a whole control panel for a thousand dollars or more. Can I just wire it into the hot wire of the electric line to the aerator.

 

Welcome to the forums.
You can buy commercial grade 7 amp breakers that would probably run around $100+.
You can get a basic 7A circuit breaker but I'm not sure how well it would work or last.
I'd want to check the draw with an ampmeter to see the current draw.

basic circuit breaker

 

No, they (Flagg) sent me the 7 amp breaker with the new aerator. My problem is i do not have a circuit breaker box to plug it into. My system is 25 yrs old and just has a plug in cord running out to the tank and aerator plugs in there. I do not want to spend a lot of money installing a circuit breaker box. Is there any way to just wire it into the line?

 

Instead of us guessing you could post a picture of it..... How to insert pictures.

 

This is a photograph of the circuit breaker flag sent me the model number of the aerator is on the notice they sent with it. Can I install this thing directly in the electric line that goes to the flag aerator.

 

If you have a control panel then you could drill a hole in it and install it in there.
It can't be just hanging outside on the wiring.

If there is no place to install it.... run the pump cord thru a handy box and mount the breaker to a blank plate. Use a deep handy box and drill a hole in the blank. Both black wires go on the breaker. The white wires get spliced thru.