Question about Intermatic T104P 208-277Volt 40-amp Timer Switch-Double Pole / Single Throw

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I have a T104P,it is hard wired to hayward I hp pump,the breaker in panel is 2 together which i believe = 240...I am putting a dolphin 115 amp with a plug. i want to run the intermatic to a outdoor receptacle for the plugin dolphin. I beleive i need to remove one breaker and run the green ground to the new outlet, but there are 2 black wire ,one in 2nd position from left and one at 4th or last postion from left(facing timer).. the schmatic is missing. please advise the positive - neutral for these two since they are both black and appear to be like 8 guage. thanks robert

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So you want to wire a 115 volt outlet to T104 240volt timer?
Open following link to see how to wire outlet so it turns on-off with timer.
If you do not want outlet to turn on-off with timer, connect 120Volt hot to terminal 1 instead of terminal2
http://waterheatertimer.org/images/Main-breaker-box-1-500.jpg

Open following link for general wiring information:
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html
http://waterheatertimer.org/See-inside-main-breaker-box.html
http://waterheatertimer.org/How-to-replace-circuit-breaker.html

What concerns me is the 8 gauge wire.
If the timer has 8 gauge wire, it is not code to connect smaller wire to outlet without putting 15 amp in-line fuse on 120Volt hot.
http://www.grainger.com/Grainger/COOPER-BUSSMANN-Fuse-Holder-1CV90?Pid=search

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
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Posted on May 27, 2011

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1) Not likely the timer is problem, unless there was fire or overheating in timer box. Use nose and eyes to inspect for signs of high heat.

2) Eliminate timer as suspect:
Move wires on timer to test if timer relays have gone bad.
Move terminal 4 to terminal 3
Move terminal 2 to terminal 1
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T104

3) Check watt rating of Hayward pump, and voltage.
1Hp motor at 240Volt draws 8 amp, and can draw 6 to 8 times that amount when starting. Up to 100 feet, should be at least 12 gauge wire and double-pole 20 amp breaker. Over 100 feet, 10 gauge wire and 30 amp double-pole breaker is best.
http://waterheatertimer.org/Color-codewire.html#motor

4) Intermatic T104 240V timer is rated 40 amps
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5) Make sure the motor is wired correctly for 240Volts.
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1 Answer

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Do you have an ammeter so you could check your amps?
What size wire is running the 60 ft to the pump?

I don't have any other ideas to share.

Gary

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2 Answers

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If you look closely, you should see a small arrow on the black plastic piece on the terminal block(jumper). That arrow lines up with either the 115 or 230 mark on the white terminal board. Make sure it is aligned with the 115.

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