Are steel frames electrical safe?

Yes! It is a requirement that all new housing be fitted with circuit breaking safety devices, steel frames are safe because the frames are earthed. When exposed to a live wire, the earthing will create a short and trip the residual current safety switches. At times, steel framing can actually be safer than the alternatives because of these safety features. A broken or pierced wire in a timber frame can remain live and leaking current can cause troublesome faults and fire risk.