Contactor for outside heaters

[Bradley6969]

Hi looking for some advice, looking to put some outside heaters (in my garden) 2 x 2500w, now I want a time delay switch but this can only switch 16A, so I’m looking at putting a contactor in as I already have one, but I’ve only ever used contactors twice before, is this the best way to set up and is drawing fine?
Thanks

 

[Bradley6969]

It does make a difference, and it doesn't have to be a fuse, a 1A MCB is fine.

Why does it matter? Aslong as the control circuit isn’t higher than the supply circuit?

 

[radiohead]

It does make a difference, and it doesn't have to be a fuse, a 1A MCB is fine.

Why does it matter? Aslong as the control circuit isn’t higher than the supply circuit?

It doesn't really make any difference, nor does it matter. Either use a 6a mcb or a 1a fuse/mcb, either way the control part of the circuit is protected. The only reason you might decide on a lower rated device over a 6a mcb is to ensure only the local device operates in the event of a fault on the control circuit. However as nothing will operate if the control circuit fails it hardly matters if both devices operate.

 

[Pete999]

Hahahaha oh well

Where is Greta when you need Her?
[automerge]1581273452[/automerge]

Why does it matter? Aslong as the control circuit isn’t higher than the supply circuit?

But you can install the fuse in the same enclosure as the contactor rather than takev up any spare ways in the CU for a 1Amp cb.

 

[davesparks]

Where is Greta when you need Her?
[automerge]1581273452[/automerge]

But you can install the fuse in the same enclosure as the contactor rather than takev up any spare ways in the CU for a 1Amp cb.

You can install the MCB in the contactor enclosure too.

 

[Pete999]

You can install the MCB in the contactor enclosure too.

Depends on the size of the enclosure Dave, doesn't it, a "slideloc" fuse is the best option I reckon.

 

[davesparks]

Depends on the size of the enclosure Dave, doesn't it, a "slideloc" fuse is the best option I reckon.

The size of the enclosure should be chosen to suit what is being installed, not the equipment chosen to suit the enclosure.

You might have to fire up the old time machine to get a slideloc these days, I haven't seen one of them new for years.