HeatJet 43 Rotary Press and RCDs

[pisquee]

We have the a Heatjet43 rotary press ... am struggling to get it up and running though (had for a few weeks) as it keeps tripping the RCD - firstly the 30mA one on the main ringmain, then I rewired in its own 16 amp feed, so it was fed fromthe main incomer which still had an RCD, although rated at 100mA, and in doing this meant I could keep it running for 5 minutes, rather than 5 seconds I got on the 30mA - we're now considering having to buy a generator to run it, as I am uncomfortable doing too much rewiring as we're only renting!

Anyone else here have the same or similar press, and successfully running it on an RCD - if so what type? or are they known for chucking power to earth, and not suitable for running on an RCD circuit?

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... German manufacturer said to contact RA Smart, all RA Smart could say was to try it on a circuit without an RCD, which either means I rewire the incomer on the consumer unit to a non RCD type (not sure landlord would be too happy if he found out, not that he'd be too happy with what I've already done mind!) or we have to take the Heatjet somewhere else, and it's a big piece of kit to be throwing in the back of the car!

[Justin]

Poor advice to try without the RCD in my opinion. It's there for good reason, if it's not there to trip....... Something else will!

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It is, but I know when I worked in entertainments as a technician there was plenty of equipment that wouldn't play well on RCDs, (equipment with large in-rush, and dirty things like motors and some lighting fixtures) and there is provision in the 17th edition (I think we're up to now) for equipment like this to have a circuit that isn't on an RCD, even in a domestic installation this can be for things like freezers, washing machines. So, an RCD tripping can point to faulty equipment, but can also trip because the way the piece of equipment uses the electricity.
As we're currently in a primarily domestic environment, everything is RCDed, and harder to get around than in an industrial installation.

[s31teg]

you just need to add this

http://www.gil-lec.co.uk/products/Circuit+Protection/Consumer+Units+%26+Accessories/MK+Consumer+Units+%26+Accessories/MK+Type+B+Circuit+Breakers/MK+Circuit+Breaker+Type+B+1Module+16A/482938503

the tripping time is still the same but you definitely going to be taking it out all the time

i've just put a similar one in to this for the electric car because that's a 16a charger



why don't you just make it easy and ring a local electrician who will do it all for you, as for renting, your not going to modify anything, just take it out when you leave

[pisquee]

I've already added the 16 amp MCB and 16 amp CeeForm for the press, but the only place on the Consumer Unit for it is either on the side protected by the 30mA RCD, or the other side which has the 100mA RCD. The 16 amp MCB (or the ring main 32 amp when I tried powering it just on a 13amp socket) do not trip, it is the RCD which is having the issue - it's not an overcurrent problem, as this would trip the MCB, but either a high inrush current, or dumping some electricity to earth rather than neutral.

The only way I can see of resolving the electrics, is to remove the 100mA RCD and replace it with an MCB - this is the main trip on the in side of the consumer unit - the first thing to be connected, so everything else on the board is fed from this.

[s31teg]

Sorry i forgot to add, this has been added not to the fuse box, but off the mains coming in from the outside board where the meter is (its in an outside IP enclosed box)

Ill take a photo later to show you what i mean


The RCD is going to give you allot of bother

[pisquee]

Ah, see what you mean ... should have thought of that option!

[bigbing69]

Try taking the 100mA RCD out replace it with a 100A DP isolator and replace the MCB with a RCBO

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Finally took the 100 amp RCD out and replaced with standard double pole isolator and all running fine. Just need to do some tweaking to get the speed set right for what we're wanting to do, but initial testing is looking good. Finally products we've wanted/needed to do are within reach, with just 6 weeks until our next trade show!