Mini Split NEC Code Question - type of control cable run through ...
2022年6月9日 · The Mrcool unit I purchased came with 14/4 SOOW, SJOW, and TC-ER control cable for the 3 wall units installed at 25ft, 50ft, and 75ft from condenser, but according to electrical code cables cannot be run through interior walls like NM cable. I am finishing a basement so I have complete access to...
mini split interconnect cable and MC inners | Information by …
2020年8月20日 · On most of the projects I work on the HVAC contractors use the MC Mini Split cable. I can't believe the cable and connectors are really that expensive compared to the overall cost of all the HVAC equipment. The connectors are a standard PVC jacketed MC cable (aka "parking deck") connector.
Mini Split Wiring | Information by Electrical Professionals for ...
2023年4月30日 · May 1, 2023. #11. Issue happening with the mini splits I've seen is that there is no neutral connection inside the exterior main unit that is only 240V (normal on original type hvac) yet the interior power heads are 120V, powered from the main unit. This forces the neutral current onto the ground, thus tripping the gfci.
Minisplit Wiring | Information by Electrical Professionals for ...
Aug 30, 2017. #8. Typically the load is outside thus the 20A requirements. The Type MC or TC that is being ran inside to the indoor unit in these mini-split cables are 240V with a 24V control wire (thus why Type TC-ER-JP can be used now in one - and two family). The actual load inside is …
Appropriate breaker and wire size for ductless mini split?
2016年7月11日 · I recently purchased a ductless mini split and am trying figure out the correct breaker and wire size. Currently I have a 220v, 30 amp breaker with 10 AWG Romex. The electrical characteristics for my LG ductless mini split are as follows: MOP 35 amps MCA 23 amps Cooling rated amps 17.55 Heating rated amps 17.55 Compressor 17.3 amps Fan 0.25 amps
Mini-Split wire | Information by Electrical Professionals for ...
2020年2月1日 · One of the electrical contractors is asking us to run the communication wire alongside out line set without any conduit. The other stated that this will not pass the electrical inspection and that it needs to be run separately and in conduit. This communication wire is a 14/3 that carriers 208VAC from the condenser to the head unit.
Mini Split wiring - correct breaker, AWG, and disconnect?
2024年9月16日 · I'm wiring a mini split, and the placard on the outdoor unit lists the following: 208/230V 20.0A MINIMUM CIRCUIT AMPACITY 25.0A Max.Fuse 40.0A Can I use a 25A double pole breaker and 10 AWG? Or would that trip the breaker often? I'm confused about the 40A max fuse. Does this mean...
Residential Service Load Calculations using high BTU Mini Split …
2020年3月31日 · Each mini split has the inside fan, outside fan, controls, and compressor all in its nameplate MCA. So you can't just take 80% of it to get the true load without the 125% factor on the compressor. 90% may be closer but even then you're guessing unless each item in the minisplit has a nameplate amp value so you can derive everything.
Mini Split system & 14-3 | Information by Electrical Professionals …
2014年10月24日 · Install a 15A CB on the hot lines of the 14/3. 3. Make the manufacturer fight it out with the inspector. If the instructions actually dictate a 14/3 (and not a minimum of a 14/3), choice 1 would violate the manufacturer's instructions, and thus violate the NEC WRT installing IAW manufacturer's instructions.
Confused by hvac mca/mocp | Information by Electrical …
2020年9月14日 · Member. Hello all, I am a bit confused when it comes to specifying for hvac equipment. Going by the spec sheets (for instance) a 3 ton mini-split shows 19.8 mca (compressor 18.25, outdoor fan .83, indoor fan .37 = 19.45) with a 20a mocp. How does this work out. It is my understanding that mocp is supposed to be 125% of the load.