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Evening all..
I have been asked to supply power for a hot tub. However, I am having difficulty finding out the information I need from the company selling the hot tub!
I mainly wanted to find out 2 things, the power that the unit requires and any cable size that is stated in the manufacturers instructions, neither of which the company new. They just said that it needs a 32A MCB. The customer states he was told it needs a 21A isolator switch??? So basically I'm none the wiser!
I have tried to find the Manufacturers instructions online to no avail. It is a 'Villeroy and Boch R6L' if anyone is clever enough to find a site which shows the wattage of this unit!
3 questions:
1. If it is a 32A MCB then would you agree that 4mm cable is OK? Both VD and Zs would be ok:
VD is 10.56V @ 32A and 30 Meters.
Calculated Zs= 0.72ohms (Ze=0.22 TNCS)
The reason I ask this question is because 6mm seems to be the 'norm' from scouring the net, but the calcs work out fine for 4mm.
2. Some hot tubs recommend a rotary isolator. Is this generally required?
3. Some hot tubs require a type C MCB. Is this generally required?
Cheers all.
PS... It has RCD protection.
Pps... I would like all the replies to be yes,no,no please
I have been asked to supply power for a hot tub. However, I am having difficulty finding out the information I need from the company selling the hot tub!
I mainly wanted to find out 2 things, the power that the unit requires and any cable size that is stated in the manufacturers instructions, neither of which the company new. They just said that it needs a 32A MCB. The customer states he was told it needs a 21A isolator switch??? So basically I'm none the wiser!
I have tried to find the Manufacturers instructions online to no avail. It is a 'Villeroy and Boch R6L' if anyone is clever enough to find a site which shows the wattage of this unit!
3 questions:
1. If it is a 32A MCB then would you agree that 4mm cable is OK? Both VD and Zs would be ok:
VD is 10.56V @ 32A and 30 Meters.
Calculated Zs= 0.72ohms (Ze=0.22 TNCS)
The reason I ask this question is because 6mm seems to be the 'norm' from scouring the net, but the calcs work out fine for 4mm.
2. Some hot tubs recommend a rotary isolator. Is this generally required?
3. Some hot tubs require a type C MCB. Is this generally required?
Cheers all.
PS... It has RCD protection.
Pps... I would like all the replies to be yes,no,no please
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