What size MCB?

How many amps does it say it needs? Do the instructions suggest a certain size supply?

On Sat, 18 Feb 2006 13:22:47 +0000 someone who may be Fatboise wrote this:-

Read the instructions that presumably come with it. They should tell you what size of protective device to use.

If it doesn't have instructions with it look up the manufacturer's web site, where you should find the information.

the smallest. If you've bought a pump that takes more you're going to get blasted off your feet when you turn the tap on :)

NT

I'd use a 3A, if the instructions were silent on the issue. 6A would probably also be fine, and more commonly found. However, trawl the instructions first.

Christian.

at a loss as to where the pump should go (see previous post last week I'm worried as the cylinder feeds 2xshowers with pumps attached and believe that the booster pump will not work with the exisitng ahowe pumps?

-- alexbartman

How about using a 3 amp fused spur from the x amp MCB and then you also have double pole switching?

Adam

You could. However, given it is on its own circuit, a properly rated MCB and a DP switch would provide both DP switching and discrimination of protective devices.

Christian.

If you can get a 3 amp MCB (some CU's do not have them) then that would be fine. But the double pole isolation really should be used on this installation and had not been mentioned before.

Adam