I replaced a rusted out millivolt natural gas pool heater with a new model, but forgot to note that it needs an electrical connection as well (for vent,etc).
I have a 240V line run out there for the pump. (2x20Amp breakers).
The manufacturer doesn't recommend hooking them both up but it's a long run to a corner of my property and it would mean removing some concrete to run the conduit out to the heater location. Seems the manufacturer's main reason to have separate circuits is to prevent a problem with one interfering with the other.
The pump pulls <9A at max load. The Heater pulls VERY little, much less than 1A.
Currently, there is nothing except an outdoor switch to the pump. Other than a very costly second run to the heater, what's my next best option? A junction box after the existing switch? replace switch with junction box and two switches? Some way to separate the line in to two (tighter to spec) breakers?
I do plan on having an electrician do this work, but I want to educate myself before I sign any work orders.
There is direct-buried 12/3 wire run out the the pump. So running another line is not at all economical.