progear

Well I haven't gave the G3 option any thought because it's a G2 system but.....correct me if I'm wrong thats why I'm on this forum, the circuit wiring will stay the same but the RS's will need to have magnetic tampering detection the JB's are already G3 so no change there. Is there anything else?

Hmmm..... Tricky to put into words, like a set of double doors two contacts across 1 resister then EOL and back to the panel. Its a grade 2 system so all connections will need to be made in appropriate JB's. I plan to series up the tampers i.e. R/S loop and JB switches then sort the 2 contacts across one resister bit.

Looks like it will be two contacts in series into one EOL circuit.

I was wondering is there any regs reguarding when a roller shutter is wide enough to need a contact on both sides? I have a job starting soon and the R/Shutters are about 3.3m wide.