look in my pics under projects. You can build one to add to a timer like you have.
These are what you will need
-box to house the contactor or relay in. $1-10
-box or bag of wire nuts and/or crimp terminals & misc spade therminals $5-$10
-40 amp (or in your case 50 amp. -since 5 pumps- or just make 2 units total)
contactor or relay. The specs would say something like 110vac input (220-240 if
thats what you want) the 40amp is the part for the load or amount its rated to
max handle. If you went with a double pole double throw (dpdt) one you could make
it run 8-10 pumps or a spst single pole single throw would work to make enough for
the 4-5 pumps. $15-$35
- you will need a power strip with at least 5 outlets on it for 5 pumps (2 of them if
making it run 8-10 pumps) this could be with or without reset on it. like something
you would run your computer off of. $3-$8
- A 2nd cord to run from the timer outlet to the contactor/or relay (this system will
require 2 outlets to plug into. one on the timer you allready have and one for the
power strip to plug into.) $5
- Cut the cord of the power strip in half and the contactor goes imbetween them to
make them conect again like a switch.
- once you get all the stuff in hand, look at how its pictured in
"PROJECTS" album of
my pix