Pool pump and SWG on the same breaker ?

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S

SpykeYs

Well-known member
May 29, 2017
57
Canada
Pool Size
30000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-3)
Hello,

I have an Hayward MAX-FLO pump rated at 15AMP on 115V which is going to be connected to a 20 AMP breaker. Can I also connect my Hayward Aqua-Rite SWG with a T3 cell which has a 1.3 to 4.5 AMP on the same circuit ? Would 15 AMP + 4.5 AMP too much for a 20AMP breaker ?

Thank you kindly,
 
I was under the impression that I will be going above the 80% rule (20 AMP break you should not connect more than 16 AMP and in this case 15+4.5 would be 19.5 AMP, very close to the 20AMP limit of my breaker.

Perhaps I'm totally wrong here ?
 
From a pool perspective it is commonly done.

From an electical perspective you are correct, NEC requires circuits to not be loaded to more then 80% of the rated capacity - 16 amps on a 20 amp CB.

Exactly what model number Hayward MAX-FLO pump do you have?
 
Hayward C48K2N143B3

I have a 15 AMP non GFI I could use for the SWG but my challenge is going to be from a timer perspective as I want both to be on the same timer. I guess I could use a T130 which seems to have poles for two separate breakers. This might actually be my best option.

Thoughts ?
 
The pump startup current is the issue. Once it is running, you "should" be able to start the SWG.

I am planning to run my pump and SWG on the same breaker, but I am not as close to the limit.

Andrew
 
Andrew_D said:
The pump startup current is the issue. Once it is running, you "should" be able to start the SWG.
Click to expand...

For a single speed pump those amps are the normal continuous draw...

Hayward Maxflo-XL Specs.jpg
 
What about this scenario.

1. Pool pump on dedicated 20 AMP GCFI
2. SWG on dedicated 15 AMP (NON GCFI) as it's already there..

T103 timer where both breakers are connected : https://www.intermatic.com/en/timer-controls/mechanical-time-switches/t103

Would this solution works ? They are on two dedicated breakers and the T103 timer will shut both of them at the same time.
 

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You are looking at the motor model number. The pump model number is on a label in the front of the pump. But that motor needs 15 amps.

SpykeYs said:
What about this scenario.

1. Pool pump on dedicated 20 AMP GCFI
2. SWG on dedicated 15 AMP (NON GCFI) as it's already there..

T103 timer where both breakers are connected : https://www.intermatic.com/en/timer-controls/mechanical-time-switches/t103

Would this solution works ? They are on two dedicated breakers and the T103 timer will shut both of them at the same time.
Click to expand...

That works fine.
 
ajw22, you have been very helpful but I have one more question.

I have the option to go 230V instead of 115V. Any advantages going this route VS what I suggested above ?
 
The pump should not pull the full 15 amps. That's a maximum draw. The actual amperage should be less.

For the SWG, the amperage listed for the cell is on the low voltage side. You don't go by that.

You go by the amperage on the high voltage side, which will be less than 1 amp with a T-3 cell.

Total running amps for the pump and SWG should be less than 15 amps.
 
SpykeYs said:
ajw22, you have been very helpful but I have one more question.

I have the option to go 230V instead of 115V. Any advantages going this route VS what I suggested above ?
Click to expand...

I was going to ask if you have 230V available.

With 230V you pull less amps and have no problem running pump and SWG on the same CB.

Then you need to use a T104 timer. It is really the same as a T103 with a 230V motor instead of a 120V motor.
 
I guess it become a personal decision at that point.

Going with the 230V route, I would need to purchase a new 20 AMP two pole GCFI breaker ~200$CND where as going with the 120V route, I would only need a 20 AMP single pole GCFI breaker for 120V ~100$CND and the T104 is going to cost ~25$ more as I already have an unused 15 AMP (non GCFI) I could use for the SWG.

Any reason I should spend the 125$ extra for 230V instead of 120V or that would be a complete waste of money ?

(wiring is a non issue as I only have a few feet from the panel and I have both 12/2 and 14/2 available)
 
Both will work.

I think higher voltage, lower amps is easier on the wiring and motor.
 
In my opinion, you can put the pump and SWG on a 20 amp breaker at 115 volts because the total running amperage for both should be less than 15 amps.

Use a clamp ammeter to verify to be sure.

In my opinion, 230 volts is always preferable over 115 volts when you have the option.
 
Thanks again for all the great help.

Going with the 230 volts option, I would need to use the T104 as a junction box as well as there aren't enough poles for both the pump and SWG right ?
 
SpykeYs said:
Thanks again for all the great help.

Going with the 230 volts option, I would need to use the T104 as a junction box as well as there aren't enough poles for both the pump and SWG right ?
Click to expand...

You can put two wires under one screw. Wires from pump and SWG go to each LOAD screw on the T104.
 

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