Jerseydaze
Senior Member
What kind of 3 pole switch should I use for the inside unit of a ductless split system ? Will be installed in finished home on wall .
Duct Less Split Disco?
- Thread starter Jerseydaze
- Start date
- Status
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
You can get a 3 pole toggle but what I prefer to do is to run my power to a standard dp switch near the unit and then go from there to the outside disco.
This way if either switch or disco is turned off the unit is de-energized. No need for the bulky 3 pole switch. BTW I think P&S makes a 3 pole snap switch
Last edited:
hbiss
EC, New York NEC: 2017
- Location
- Little Falls, New York NEC: 2017
- Occupation
- EC
I have never seen a separate disco installed or even required for the inside unit.
-Hal
-Hal
DavidA
Member
- Location
- Fresno, CA
The units I have worked with before have shown that only one of the 3 conductors that run between the indoor and outdoor units is hot. So I've used a single pole switch as a disco for the indoor unit.
hbiss
EC, New York NEC: 2017
- Location
- Little Falls, New York NEC: 2017
- Occupation
- EC
Yes. Usually for a 120V unit a hot for the indoor fan and controls, a neutral and a switch leg to control the condenser outdoors. So you would only need to switch the hot. However some larger 240V units would have no neutral so you would need a 2 pole switch.
-Hal
-Hal
c2500
Senior Member
- Location
- South Carolina
Mitsibishi requires one in their instructions. Seldom enforced but actually there in print.
c2500
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