BS6891-2005 8.16.2 Gas Regs + Conduit Box + FP200/Firetuf

[Dorothy Bradbury]

I have a 20mm conduit box (b/inlet, side-outlet, BESA). Quite close to a gas pipe, neither box nor pipe can be moved.

I would prefer not using 20mm conduit. I would use galvanised conduit box (threaded), gland & FP200.

In this instance I can not use a metal box re relevent gas regs:

BS6891-2005 8.16.2 Separation of installation pipework from other services. Where installation pipes are NOT SEPARATED BY ELECTRICAL INSULATING MATERIAL, they shall be spaced as follows: a) at least 150 mm away from electricity meters and associated excess current controls, electrical SWITCHES or SOCKETS, distribution boards or consumer units; b) at least 25mm away from electricity supply and DISTRIBUTION cables.

An alternative is modifying an insulated box... o Saw off the side-outlet flat to the box side o Tap to M20x1.5mm, fit gland & back nut o

have used a black nut to emphasise in the photo.

It meets "separated by electrical insulated material" for gas, but does it meet electrical regs & eg - "industry practice"?

Re bend radius, FP200 cable is cut down to singles on entry.

[Rumble]

That's OK, yes. In fact, you could have bought the bits to do it. You just need a plastic besa box with side and back entry (e.g. Marshall Tufflex 2MRB7), a female adapter MAB2, a short length of 20mm dia conduit and solvent weld adhesive. The stuffing gland would then screw directly into the adapter (i.e. without the nut).

[Dorothy Bradbury]

Great.

It is a little longer (not much, but noticeable), but yes off-the-shelf.

Many Thanks.