heatbank immersion heaters

[jim]

Does this sound right & proper?

Colleague has 2 X 16A backup immersion heaters in a heatbank

They have been wired on one circuit on a 32A MCB, (on a new 2X RCD split CU).

They are seperately switched, in two locations viz:- 1) next to heatbank via 2 X switched fused spurs (?) with a

13A (plug type) fuse in each 2) in adjoining room via 2 X 45a DP switches (more convenient for residents to control)

Queries

13A fuses for 16A immersions? 45A DP switches - wouldn=92t 20A DP do and be a bit cheaper?

thanks in advance

JimK

[John Rumm]

Didn't this get answered a couple of days ago?

Are you sure they are 16A and not 3kW?

OK so long as there is no other way of drawing power from the circuit such as sockets etc.

Not appropriate (nor is the use of a spur accessory rated at 13A). However it is unlikely the fuse will actually blow on a low level overload such as that.

Possibly. Not always easy to find 20A if you are buying in the sheds though. There is nothing actually wrong with using an overspeced switch in this circumstance.

[jim]

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Hi John, I thought it had got lost somewhere so retrimmed and reposted

- I've had a look at the setup and replied with details to the other thread. Grateful for your time and expertise :>) cheers JimK