Timeline for MRCool 24k BTU breaker size, wire gauge and disconnect box
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| May 30, 2023 at 1:00 | comment | added | Ecnerwal | 8 AWG copper at 60°C rating is good for 40A, so it's good for 35A. A 40A breaker is indeed more than the manufacturer (and thus UL and thus NEC) allows, unless it's feeding a 35A fused disconnect, and even that might get failed given that 35A dual-pole breakers are available.. Frankly, 30A is already 136% of the required power, so I think you're chasing something that really won't change a thing, operationally, by supplying 159% but you are allowed to if it makes you happy. | |
| May 29, 2023 at 22:52 | comment | added | user289394 | Are there any issues putting the max 35Amp Breaker with the Min. recommended wire 8awg Cu? I'm installing the same Mini Split and already bought the more expense 8/2 romex wire (Cu), and prefer to give the circuit as much capacity as it is able to handle for those extreme weather days with prolonged usage. Just to make sure, unlike what could be implied from the their ludicrous installation manual since 8awg (Cu) is ideal for a 40amp breaker, a 40amp breaker is overrated for this 24K btu 240v Mini Split, given the nameplate specification of "35amps" in the Max Fuse Amps? | |
| May 11, 2023 at 21:13 | vote | accept | user903805 | ||
| May 11, 2023 at 16:31 | history | edited | Ecnerwal | CC BY-SA 4.0 |
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| May 11, 2023 at 15:52 | history | edited | Ecnerwal | CC BY-SA 4.0 |
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| May 11, 2023 at 15:44 | history | answered | Ecnerwal | CC BY-SA 4.0 |