Masterplug RCD Adaptor (63731)

Hi suedeapple, As long as you don't overload the extension lead or RCD Adaptor, so not running any more than 13A (3120W, 3.12kW) through the adaptor at any one time, then you will be fine.

Hi littlewren, As long as you don't overload the RCD then you can basically plug in what you like, but it is worth noting that these are `active' or not mechanically latched which means that in the event of any power cut they will trip and require human intervention to reset them before the fridge freezer will be powered again (which will not be the case with a consumer unit based RCD).

Hi Leeroy, Realistically there is only a standard test cycle for consumer unit RCDs, which is currently recommended to be once every 6 months. If you don't feel like testing it that often then as long as you are not regularly standing in the pond or reaching in with bare hands then you could extend this to whatever duration you feel comfortable with.

No aircon manufacturer is going to make an appliance which might be dangerous enough to require an external RCD in normal use, however, if you have an unsupervised aircon unit in a room which might suddenly experience a flash flood of several inches, this adaptor might then be useful.

Hi Danny00023, As long as the adaptor is not overloaded, and a pond filter and pump are unlikely to be drawing anywhere near 3kW each, then they will be fine to use with out RCD Adaptors. The function of an RCD is to cut the flow of power if there is an imbalance of flow between Live and Neutral, basically if power is leaking out of the circuit, on the presumption that this could be a person getting a shock (but there can be faults which do not cause an imbalance and so would not necessarily be detected by an RCD)