# Wiring washer, dryer, tankless water heater

Trying to wire for washer/dryer combo in the garage, and we need to add a tankless water heater to get hot water to the washer. In their current location, there's a (EDIT: 15) AMP circuit for washer, and one for the dryer. Both are electric. The water heater requires up to 33A, and needs a double-pole 40A breaker. It also runs 240V (washer 110, dryer 240). To make this fit in the box, I'm hoping I can make some combo of either the washer or dryer on that double pole as well.

EDIT TO CLARIFY: We have two open spaces to work with in the panel, I'm trying to see how I can combine one of the other appliances with the heater in that open 2-pole spot. (See @Harper below)

Electrical newbie, but am I correct in thinking that the best way would be: -50A double pole with 6/3 to the heater (max 33A) and washer (Dr. Google says max 10). I already ran 10/3, but it looks like that's nowhere near enough to carry this load. It's exposed 20 feet, so I don't mind re-running. -Leave the dryer on dedicated 30A circuit.

Does this sound reasonable? Is there a simpler way that I am missing? (or is this DOA and all three need to be on different circuits?)

Thanks! Jeff

• Your washer is on a 30 A circuit? That's rather atypical - are you sure it's not a regular 15 or 20 A? Apr 29, 2017 at 19:36
• `to make this fit in the box`. You're saying you only have 2 spaces left in your service panel and that will only fit one 2-pole breaker. Ok. That's solvable, but not that way. Apr 29, 2017 at 20:11
• Is the garage attached or detached? Apr 29, 2017 at 20:13
• @mmathis- you're right. Washer is only on 15. Apologies. Apr 30, 2017 at 0:06
• @user50459 15 and 20 A circuits can supply many fixtures, but anything higher must be on a dedicated circuit. So, your dryer and heater need to be separate. Your panel may accommodate tandem breakers, which put 2 (120 V, generally 15 or 20 A) circuits into 1 space in the panel. If your panel supports these, that could free up space for another 240 V breaker. Apr 30, 2017 at 3:13