Test Meter - Forum Sponsors since 2007!
This official sponsor may provide discounts for members

Discuss Circuit Breaker needed for Split Air-con with Inverter in the Electrical Forum area at ElectriciansForums.net

Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:  American Electrical Advice Forum

Hello all. I´m installing a new multi split Air Conditioning (Inverter Type) in my dwelling and I have to purchase all of the electrical parts needed for the installer. I am currently running a 63a Type-A RCCB and I was told by the electrician that I could use the Type-A with a 16a Type-C MCB but according to my research, I need to upgrade to a Type-B RCCB. Does anyone have any experience in this?
 
uHeat Banner - Forum Discount Available
This official sponsor may provide discounts for members

Pete999

-
Arms
Esteemed
Hello all. I´m installing a new multi split Air Conditioning (Inverter Type) in my dwelling and I have to purchase all of the electrical parts needed for the installer. I am currently running a 63a Type-A RCCB and I was told by the electrician that I could use the Type-A with a 16a Type-C MCB but according to my research, I need to upgrade to a Type-B RCCB. Does anyone have any experience in this?
Do you not trust your Electrician Johnny? Rather that get the stuff yourself, you ought to let him supply and fit what is required, German Engineering is very good.
 
  • Thread Starter Thread Starter
  • #3
He is a friend and commercial electrician. He is quallified up to 1k Volts I believe he said but he told me that he has not done any residentual electrical work and that leaves me to doing the reasearch. If neccesary, I will call another electrician out but I was hoping to find a simple solution.
 
  • Thread Starter Thread Starter
  • #4
The manual that came with the unit is not very discriptive and just states: ELCB that can handle harmonics > MCB 16-A > Outside Unit
 

TJ Anderson

-
Mentor
Arms
Esteemed
Hello all. I´m installing a new multi split Air Conditioning (Inverter Type) in my dwelling and I have to purchase all of the electrical parts needed for the installer. I am currently running a 63a Type-A RCCB and I was told by the electrician that I could use the Type-A with a 16a Type-C MCB but according to my research, I need to upgrade to a Type-B RCCB. Does anyone have any experience in this?
You need to know the load of the unit and then size circuit protective devices and cable. Ask the Electrician what supply they require.
 

TJ Anderson

-
Mentor
Arms
Esteemed
The manual that came with the unit is not very discriptive and just states: ELCB that can handle harmonics > MCB 16-A > Outside Unit
Assume it is single phase.

Not sure what the regs are in Germany. Over here that would get a 30ma 61008 RCD (>16A) in series with a 60898 C16 or instead a 61009 C16 RCBO would be the order of the day.
2.5 or 4mm circuit conductors dependant on PFC at origin, install method, length of circuit, VD etc.
As I said don't know German regs. We would not normally protect AC on RCD over here unless absolutely forced to by install method.
 

TJ Anderson

-
Mentor
Arms
Esteemed
Lol. I'm too late again. Yes 12.2A single phase.

How far are you running it from supply and how will cable be run?
 
D

Deleted member 105166

Daikin kit is amongst the best, so good choice of brand.
You'll need an IP67 rated rotary isolator beside the outdoor unit, to isolate the whole system.
The indoor unit takes its 230V from the outdoor unit and you'll have an FCU beside the indoor unit for local isolation.
As already stated, installation method and rating factors must be considered, also depending on how the cable to the outdoor isolator will be routed may influence the cable selection (i.e. avoiding exposed T/E outdoors)
Type C protective devices are usual for this equipment, due to the inrush current on startup.
 

plugsandsparks

-
Arms
Esteemed
Agree with C16 either MCB or RCBO depending on whats up front. This system looks like a 2 room multi-split with both rooms indoor units powered from a 3C+ earth direct to outdoor unit. I personally do not use indoor local isolation as there is little point, you still need to isolate the compressor before working on it. So i cable direct using YY cable. Daikin are the Daddy, R32 gas is the new stuff bit more flammable than R410A so have it serviced regularly.. .....
 
Bulk Workwear - Clothing Suppliers for the Whole Forum Network
This official sponsor may provide discounts for members

Reply to Circuit Breaker needed for Split Air-con with Inverter in the Electrical Forum area at ElectriciansForums.net

Top Bottom