Replacing mini-splits electrical question

[1776]

The box pictured is a service disconnect. Not a fuse box.

Everything is a fuse if you have enough amperage.

 

[BillsCamino]

I'd buy a 240v unit...cheaper to run.
I've got a 1 ton Carrier 22 SEER 240V in my sunroom...runs awesome

 

[1776]

I'd buy a 240v unit...cheaper to run.
I've got a 1 ton Carrier 22 SEER 240V in my sunroom...runs awesome

Yeah, might be the best idea...
I was wondering about the 120 because that's what the Mr. Cool DIY 12k BTU units run. I've never pulled a vacuum/charged a home AC system and don't have the tools. Seems like it might be best to just buy the tools and a pair of 220v 12k BTU units.

 

[1776]

You have two phase wires that are both black (120vac each) instead of one being red. You can definitely install the 120v minisplit with the voltage you have in the disconnect. You already have a neutral in the box (it appears, but would need to be verified with a multimeter). You could remove one of the phase wires (black 120vac) put a wire nut on it, and carry the neutral straight to the condenser or break it with the disconnect in place of the phase wire that you removed.

I'm a bit lost. The only pair of black wires I see is for the surge protector; it has 2 black and one white (connected to the ground) The bundle running from the breaker panel has one black, one white, and a bare ground; the bundle running to the heat pump has the same.

 

[cskiles]

I'm a bit lost. The only pair of black wires I see is for the surge protector; it has 2 black and one white (connected to the ground) The bundle running from the breaker panel has one black, one white, and a bare ground; the bundle running to the heat pump has the same.

The two black wires landed on the terminals identified as LINE should be two different phases, e.g., 240v. Maybe I am missing something that you are seeing. If your cable running from the breaker panel has only a white/black/ground, either the white is NOT a neutral or the unit it is powering is a 120vac unit. BTW, what is the surge protector you are taking about?

 

[BillsCamino]

The present Carrier unit just replaced a 10 yr old Mitsubishi 1 ton split system this past summer.
Both are very efficient.
The 240v power supply gets it's power from my shop in the backyard which has it's own 200 amp service and electric meter.
Bills average about $50 /month during peak usage seasons

 

[1776]

The two black wires landed on the terminals identified as LINE should be two different phases, e.g., 240v. Maybe I am missing something that you are seeing. If your cable running from the breaker panel has only a white/black/ground, either the white is NOT a neutral or the unit it is powering is a 120vac unit. BTW, what is the surge protector you are taking about?

Intermatic AG3000 is the surge protector. It's kinda weird, my natural inclination looking at what's in this disconnect box is that it's 120, but the breaker two handle-tied breakers like a 220 would be and the heat pump says it is 220 (Well, 208/230)

 

[cskiles]

Intermatic AG3000 is the surge protector. It's kinda weird, my natural inclination looking at what's in this disconnect box is that it's 120, but the breaker two handle-tied breakers like a 220 would be and the heat pump says it is 220 (Well, 208/230)

At this point you will need to put a meter on it to find out for certain.

 

[joel2000]

This is what I see. Btw… I’m not a professional electrician..amateur at best. Multimeter time