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gaznod · Joined: 21 Aug 2005 Posts: 2 Location: Rochford, essex

Hi,

I want to plug a 3kw pool heater in to a socket in my garage. The garage is on a mk B16 mcb in the main fusebox, which is on the rcd side. The only other device on this circuit is the pool pump which is 55w. The garage circuit is a single 2.5mm2 twin and earth cable that runs for about 15-20 feet and is terminated in the garage by a fused box (not fusebox)

This wiring was present when i purchased the house.

Problem: when i plugged in the heater, the mcb made an awful humming/buzzing noise and eventually tripped. (happened after about 2 hours) but did not throw the rcd.

The manufacturer of the heater says it is suitable for plugging into a normal socket.

Any help would be great.

Thanks Gary

gaznod · Joined: 21 Aug 2005 Posts: 2 Location: Rochford, essex

All sorted. The neutral wire in the Mcb was not tightened and was very loose. Checked all the connections and it works fine now.

Cheers Gary